CN109286945A - A kind of tactical net countercheck based on signal identification and network reconnaissance - Google Patents
A kind of tactical net countercheck based on signal identification and network reconnaissance Download PDFInfo
- Publication number
- CN109286945A CN109286945A CN201810741946.1A CN201810741946A CN109286945A CN 109286945 A CN109286945 A CN 109286945A CN 201810741946 A CN201810741946 A CN 201810741946A CN 109286945 A CN109286945 A CN 109286945A
- Authority
- CN
- China
- Prior art keywords
- signal
- network
- frequency
- information
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/006—Synchronisation arrangements determining timing error of reception due to propagation delay using known positions of transmitter and receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The tactical net countercheck based on signal identification and network reconnaissance that the invention proposes a kind of, tactical communication's Target attribute recognition is carried out including the perception of tactical net comprehensive situation, based on time-frequency sky feature, specific tactical communication's target is detected based on synchronous characteristic, the time-division multi-target jamming based on network key information, and based on the synchronous tactical net confrontation inveigled.Method core is that Target attribute recognition, network node positioning, type of service analysis and portfolio size are carried out using signal time-frequency spatial feature and network feature information to be counted, and is realized to the communication signal recognition and network synthesis Study on Trend under complicated Battle Field Electromagnetic；And it is directed to different target networks, on the one hand timesharing interference is carried out using the sparsity of network key information, promote multi-target jamming ability, on the other hand trick interference is synchronized using the loophole of synchronization mechanism, effectively antagonizes the ad hoc coded communication network with the characteristics of multihop routing forwarding, high-speed frequency-hopping.
Description
Technical field
The tactical net countercheck based on signal identification and network reconnaissance that the invention proposes a kind of, can be used in fighting
The positioning of art communication network target and portfolio estimation, enemy and we's attribute of identification tactical communication's target, promotion Method for Tactics Radio Communication signal
Detection sensitivity and reduce empty inspection and false dismissal probability, the multi-target jamming ability that promotes communication countermeasure system, to tactical communication
Net is interfered, and communication reconnaissance and communication countermeasure field are belonged to, and is mainly used for opposing Situation Awareness, the communication target of battlefield communication net
Interfering well cluster in signal detection, communication countermeasure and interference guidance in enemy and we's Attribute Recognition, communication countermeasure, to tactical net
The confrontation of network.
Background technique
With the digital battlefield increase of frequency number of devices, Battle Field Electromagnetic becomes increasingly complicated, connects so that scouting
Receipts system is difficult to effective identification signal, perception situation of battlefield under battlefield surroundings, and countermeasure system accurately implements the difficulty of interference
It is increasing.
Situation of battlefield perceptive mode uses direction finding to cross positioning mainly to determine radiation source positions at present, and this method, which exists, to be surveyed
To the not high feature of positioning accuracy that crosses, and direction-finding equipment generally requires multichannel receiving device, and the device is complicated, cost is high, no
With needing interactive data volume big between direction-finding equipment, the requirement to communication link is high.In addition, the state obtained using existing method
Gesture information only includes geography information and with frequency information, does not maintain information and link setup information, nothing using the network in digital communication network
Legally constituted authority meter network traffic, it is difficult to the important communication network in judgement identification battlefield.On the other hand, detecing in traditional Communication Jamming
It examines guidance mode and is mainly based upon enemy and we's Attribute Recognition that the protection of party B communication frequency carrys out simple realization signal of communication.With jump
Frequently, the wide extensive application with means of communication is spread, communications band is overlapped between ourselves and the enemy, is difficult to protect by frequency range and is realized differentiation
The purpose of enemy and we's echo signal.
Mainly there are aiming, obstruction, tracking to interfere the interference method of communication network at present, for the main of multi-target jamming
Method is frequency division multiple target and two kinds of time-division multiple target.As shown in Figure 1, frequency division multiple target passes through while exporting multiple frequency signals
It realizes the interference to multiple communication networks, reduces the jamming power to each network, promoting multi-target jamming ability
Interference effect distance is reduced simultaneously.As shown in Fig. 2, time-division multiple target exports multiple frequency signals by timesharing to realize to more
The interference of a communication network reduces the interference time to each network, reduces while promoting multi-target jamming ability
Interference effect.In addition, no matter using frequency division or time-division, traditional conflicting mode is faced using Tactical Internet as the ad hoc of representative
Self-organizing formula communication network is difficult to play effectiveness, not only big to the demand of jamming power, though use high-power interference so that
Individual link interrupts in network, and enemy's communicating pair still can realize normal communication by other target node data packets.
Summary of the invention
The invention mainly comprises five component parts: 1, tactical net comprehensive situation cognitive method, and 2, one kind is when being based on
Tactical communication's Target attribute recognition method of the empty feature of frequency, 3, a kind of tactical net target detection side based on synchronous characteristic
Method, 4, a kind of time-division multi-target jamming technology based on network key information, 5, a kind of tactical net based on synchronous trick
Countercheck.
1, tactical net comprehensive situation cognitive method
Each node realizes network time synchronization by detection synchronizing information in communication network, and the invention proposes a kind of wars
Art communication network comprehensive situation cognitive method has used for reference communication network synchronization thought by synchronous detection come when realizing that echo signal reaches
Between accurate estimation, it is only necessary to geographically time of arrival (toa) can be realized in several single channel receiving devices of different distributions
Accurate estimation (the accurate estimation that arrival time can be realized is jumped using single synchronizing information), realized using Localization Estimate Algorithm of TDOA
Accurate target positioning；The situation sense of battlefield communication net is carried out using the link setup information characteristics and synchronizing information of tactical net
Know, includes geographical distribution, type of traffic and the portfolio size of each network node, each communication network in the Network Situation
The contents such as frequency characteristic.
The arrival time in arrival time estimation method and traditional time difference positioning method in this method based on synchronizing information
Estimation method is compared, and has the characteristics that precision is high, speed is fast, equipment is simple, each interior communication link requirements are low；And this method
Compared with traditional Situation Awareness method, the situation such as network traffic type, portfolio size, business frequency letter can be also obtained
Breath can effectively assist judgement of the battleficld command person to enemy's communication network significance level.
The realization of this method the following steps are included:
Step 1 sets up at least three fixed/mobile intelligence pltforms according to regional demand is scouted, so that each intelligence pltform is detectd
It examines range and keeps each station to synchronize not less than scouting region, and using time dissemination system；
Step 2, each intelligence pltform accurately estimate synchronizing information using synchronous searching algorithm using known synchronizing information
Arrival time；
Step 3, synchronizing information frequency that Jiang Gezhan is spied out, arrival time are transmitted to main website；
Step 4, main website receive the frequency, type, arrival time parameter of synchronizing information according to each station to each synchronous letter
It number is positioned using Localization Estimate Algorithm of TDOA, calculates the geographical location of each network node；When being reached simultaneously according to synchronizing information
It carves feature and carries out net platform sorting, identify the belonging network number of each synchronizing information；
Step 5 identifies type of service using the synchronous characteristic in link setup information, and to different service types in each network
Portfolio counted；
Step 6, by the network node location of heterogeneous networks, type of service and portfolio size, frequency statistics feature, net
Network number is converted to battlefield tactical net situation information map.
2, a kind of tactical communication's Target attribute recognition method based on time-frequency sky feature
The invention proposes a kind of tactical communication's Target attribute recognition methods based on time-frequency sky feature, utilize tactical communication
Enemy and we's attribute of the characteristic informations such as time, frequency, the orientation of signal identification tactical communication's target.Temporal characteristics information refers to using
In the synchronous temporal information of communication network can be for Frequency Hopping Signal every beginning and ending time for jumping signal；Frequency information refers to
The communication frequency of network is then its Hopping frequencies collection for Frequency Hopping Signal；Azimuth information refers to be communication target relative to confrontation
The azimuth information of equipment.By probability analysis, under battlefield surroundings, enemy and we's communication equipment is three-dimensional in time, frequency and orientation
The probability being overlapped in information is extremely low, and therefore, comprehensive utilization time, frequency and azimuth information can effectively distinguish battlefield communication
Enemy and we's attribute of target.
The realization of this method include the following steps (in view of the Attribute Recognition of frequency-fixed signal is relatively easy, following steps master
To be described for frequency hopping network):
Step 1, it is contemplated that the correspondence entity fought under normal conditions is carried out in prewar, and messaging parameter is relatively fixed；
Prewar, confrontation equipment can receive the signal of our communication station, and calculating jump signal beginning and ending time and Hopping frequencies collection (can also pass through
The messaging parameter that Office of the Telecommunications Authority issues, which is planned, to be obtained), database is written into party B messaging parameter.
Step 2 scouts reception system by multichannel direction-finder antenna and receives radiation signal, and does FFT calculating, calculates
Instantaneous spectrum out；Direction finding processor calculates the showing to degree of every instantaneous spectral line.
Step 3, according to enemy and we's general orientation information under battlefield surroundings, (e.g., under typical battlefield surroundings, enemy communicates mesh
Mark signal should appear in front), direction parameter is set, carries out airspace filter processing to signal is received, occurs in dilution frequency range
Number of signals.
Step 4 calculates the only time parameter that takeoffs by airspace filter treated Frequency Hopping Signal, the time parameter one
The signal of cause can determine whether as the signal in consolidated network, therefore can be according to the difference of time parameter, to the net platform signal received
It is sorted, and number write-in local data base.
Step 5 carries out frequency set statistics to the net platform signal that temporally parameter sorts out, frequency set information is written
Local data base.
Step 6, generalized time and frequency set parameter are compared with the party B net platform data information in local data base
Analysis, judges enemy and we's attribute of signal.
Since enemy and we's communication has regularity on orientative feature, there is randomness in frequency and temporal information, therefore
It is minimum that the probability being overlapped on time, frequency, orientation three-dimensional information is communicated between ourselves and the enemy.This method is due to having merged time, frequency
Rate, orientation three-dimensional information, judgement redundancy is larger, therefore requires the estimated accuracy of any of them parameter not needing very higher position
It can effectively realize enemy and we's Target attribute recognition under typical battlefield surroundings.Pass through analysis, 10 degree of direction finding precision, time Estimate essence
Spend 100 microseconds and 50% frequency set estimation accuracy rate can realize battlefield communication objective attribute target attribute under divisional operation scale
Effectively identification.
3, a kind of tactical net object detection method based on synchronous characteristic
The invention proposes a kind of tactical communication's object detection method based on synchronous characteristic, for promoting tactics channel radio
Believe the detection sensitivity of signal, reduce empty inspection and false dismissal probability.This method mainly utilizes the frequency domain characteristic of synchronization signal, is removing
Noise, environment carry out frequency domain relevant treatment under conditions of influencing；As shown in figure 5, increasing coherent signal length can effectively mention
High system processing gain improves the acquisition sensitivity of system.
Realization of the invention the following steps are included:
Step 1 obtains the wireless communication synchronization signal progress zero padding operation of enemy battlefield to usually scouting, as shown in fig. 6, making
The whole power that synchronization signal length after obtaining zero padding is 2, and conjugation acquisition will be taken to synchronize frequency domain after synchronization signal progress FFT operation
Optimum Matching filter coefficient；Matched filter coefficient truncate by synchronization signal bandwidth and obtains suboptimum matched filter system
Number；
Step 2, according to system reception state, to inactive time period is received, (interference period, the saturation of receiver or sampling are saturated
Period) data are used as reception signal after carrying out zero padding processing, and (subtract benefit equal to matched signal length according to real data length
Zero-length) generate dynamic decision threshold coefficient；
Step 3 will receive signal and obtain by window (window is long to be equal to half symbol lengths) progress FFT operation and receive frequency-region signal；
Step 4 will receive frequency-region signal by frequency point and carry out convolution with synchronous frequency domain matched filter coefficient, seeks convolution knot
Square acquisition frequency matching result of fruit mould；It calculates simultaneously and receives frequency-region signal energy；
Step 5 takes frequency matching result to do Preliminary detection judgement: if matching result is greater than dynamic decision threshold value (equal to sentencing
Certainly threshold coefficient is multiplied by signal energy), then it exports matching frequency and enters cascading judgement link；Sentence if matching result is less than dynamic
Certainly threshold value then gives up matching result；
Step 6 carries out cascading judgement using the court verdict of different frequencies simultaneously, removes void caused by harmonic wave and examine result
After export final detection result.
Note: the communication target type that matched filter coefficient can be fought as needed determines, if communication target device is
Know model, can local data base calculate generate matched filter coefficient, if communication target device be unknown model, can by
Real time reconnaissance acquires echo signal under battlefield surroundings, by resolving, generates matched filter coefficient.
4, a kind of time-division multi-target jamming technology based on network key information
The invention proposes a kind of time-division multi-target jamming methods for network key information, can ensure to each logical
Under the premise of communication network interference effect, the multi-target jamming ability of effective lifting system.As shown in figure 8, this method is mainly known
Not with the key slot in interference communication network, reduce to effective interference time of single network, by time division multiplexing interference come
The multi-target jamming ability of lifting system.
The realization of this method the following steps are included:
Step 1 analyzes target network, obtains the key message feature in its communication network, and key message is main
Information, communication link setup information etc. are maintained including Network Synchronization information, network, local data base is written into key slot feature；
Step 2 analyzes collected baseband signal using key message recognizer, judges that signal of communication is
It is no to belong to network key information；If belonging to network key information, carrier frequency, the bandwidth, tune for obtaining signal will be analyzed simultaneously
The output of the parameters such as mode processed, modulation index.
Step 3 selects optimal interference signal, interference duration output dry according to network key information type and signal parameter
Disturb decision information；
Step 4 exports according to interfering well cluster information and interferes, enters step two when end of interrupt.
5, a kind of based on the synchronous tactical net countercheck inveigled
The invention proposes a kind of based on the synchronous tactical net countercheck inveigled, and ties up using tactical net is synchronous
The characteristics of holding information and slow networking synchronizing information maintains information to force communication node logout by lasting interference Network Synchronization, into
And discharge false networking synchronization signal late and it is synchronous maintain signal, lure the temporal information of logout node acceptance error into and can not
Effectively network.
This method has the characteristics that power demand is low (it is i.e. effective that pseudo-synchronous signal reaches enemy's communication station receiving sensitivity)；
The network node inveigled can not communicate with other nodes, can not also undertake the task of network routing forwarding, therefore this method
The hoc communication network of the ad with the characteristics of multirouting can be effectively antagonized.
The realization of this method the following steps are included:
Step 1, identify communication process in initial synchronisation time slot, network maintain synchronization time slot (known station type can lead to
The frame structure for crossing local data base, which compares, to be realized, unknown station genre can be by identification synchronization time slot in Modulation Types, modulation speed
Rate and frequency hopping rule etc. are realized with the difference that data service is jumped)；
The data of the above synchronizing information are carried out down coversion, demodulation, and the synchronizing information after confirmation are pressed by step 2
Former format is modulated, framing, up-conversion, generates pseudo- synchronizing information and (can also be realized using recording playback signal, but recording playback mode is deposited
The noise accumulation the problem of)；
Step 3 maintains time slot to discharge interference signal, forces in its net and belong to platform logout in network, by scouting, inspection
Measuring network maintains time slot to shift, then shows there is node logout；
Step 4 discharges pseudo- synchronizing information (when release frequency is higher than normal communication after node logout, then with small-power
The synchronous occurrence frequency for maintaining information), it lures the temporal information of logout category platform acceptance error into, causes (the communication of false networking phenomenon
Equipment state, which is shown, to have networked, but since its temporal information is out-of-date, can not communicate with interior other nodes are netted).
Step 5 detects that the network persistently to shift maintains time slot to stablize in one and original not phase by scouting
Same time location, then show that the node comes into vacation and enters net state.
This method demodulates legacy network synchronization time slot data, the processing mode of framing, re-modulation, when to former network
Between synchronization time slot data carry out delay repeating transmission, can avoid locally generated pseudo- synchronizing information not " true to nature " the problem of, more avoided puppet
Make the cryptography issue that signal often is faced with；In addition, the accumulation of noise is also avoided using this processing mode, so that pseudo- synchronous letter
Number signal-to-noise ratio it is guaranteed, be to reduce that power is inveigled to be effectively ensured.It, can be with lesser function by the synchronous confrontation mode inveigled
Rate cost makes network node that can not forward data packet, substantially increases the antagonism to self-organizing network.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment
1, tactical net comprehensive situation cognitive method
Step 1 sets up three mobile intelligence pltforms (station the 1- that stands 3) according to regional demand is scouted, and each intelligence pltform is not at a distance of small
In 20 kms, each intelligence pltform can cover 400 kms, and intelligence pltform carries out multistation using Beidou/GPS time service and synchronizes；
Step 2, each intelligence pltform are accurate using synchronous searching algorithm using certain known UHF frequency hopping radio set synchronizing information
Estimate the arrival time of synchronizing information, arrival time precision is less than 100ns；
Step 3, intelligence pltform 2 and station 3 by synchronizing information type, synchronously arrive at the time, synchronizing frequency is sent to intelligence pltform 1；
Step 4, intelligence pltform 1 receive the frequency, type, arrival time parameter of synchronizing information according to each station to each same
It walks signal and is positioned (position error is less than 100 meters) using Localization Estimate Algorithm of TDOA, calculate the geographical position of each network node
It sets；Net platform sorting is carried out according to synchronizing information arrival time feature simultaneously, identifies the belonging network number of each synchronizing information；
Step 5 identifies type of service using certain type frequency hopping radio set frame structure and traffic profile, and in each network not
Portfolio with type of service is counted；
Step 6, by the network node location of heterogeneous networks, type of service and portfolio size, frequency statistics feature, net
Network number is converted to battlefield tactical net situation information map.
2, a kind of tactical communication's Target attribute recognition method based on time-frequency sky feature
Step 1, prewar party B messaging parameter are known the real situation, and the messaging parameter planning issued by Office of the Telecommunications Authority obtains party B
The parameter (e.g., the parameters such as network No., frequency hopping table number) of communication can not obtain the feelings of messaging parameter in special circumstances by Office of the Telecommunications Authority
Under condition, the signal for receiving our communication station is equipped using confrontation, is calculated and is jumped signal beginning and ending time and Hopping frequencies collection etc., it will
Database is written in party B messaging parameter.
Step 2 scouts reception system by multichannel direction-finder antenna and receives radiation signal, and does FFT calculating, calculates
Instantaneous spectrum out；Direction finding processor calculates the showing to degree of each spectral line
Direction parameter is arranged according to enemy and we's target general orientation information under battlefield surroundings in step 3, to receive signal into
Row airspace filter processing, the interior signal occurred of dilution frequency range, reduces number of signals to be processed in next step, improves processing speed.
Step 4 carries out the beginning and ending time parameter Estimation of Frequency Hopping Signal one by one, is for the signal left after airspace filter
Time Estimate precision is improved, the key slot signal in network can be identified first and (such as synchronous jump signal, signal is jumped in duties
Deng), then beginning and ending time estimation is carried out to the jump signals of these key slots, according to the difference of beginning and ending time parameter, to receiving
Net platform signal sorted, and number write-in local data base.
Step 5 sorts out to obtain net platform signal progress frequency set statistics to temporally parameter, frequency set information is written
Local data base.
Step 6, generalized time and frequency set parameter are compared with the party B net platform data information in local data base
Analysis, judges enemy and we's attribute of signal.
3, a kind of tactical net object detection method based on synchronous characteristic
By taking the radio station certain foreign military UHF as an example, a synchronization signal includes 100 symbols in 500us length, scouts system
System sampling multiple is 32 times, and synchronization signal length is 3200 sampled points.It, be by way of zero padding to carry out FFT operation
Make the integral number power of sampled data length 2, by mending 896 0 in data trailer data length is reached in this example
4096 (integral number powers that the length is equal to the minimum 2 greater than synchronization signal length)；3200 actual signal hits are taken simultaneously
According to, and mended 890 0 in actual signal tail portion and data length is made to reach 4096, as shown in Figure 6.
Process flow of the invention is as shown in fig. 7, specifically comprise the following steps:
Step 1 forms local synchronization after mending 896 zero to local synchronization signal since synchronization signal length is at 3200 points
Signal s (i), wherein i=0,1 ... 4095, length is just 2 12 power；2 12 power are same comprising all 3200
It walks in signal, the smallest integral number power.Conjugation is taken to obtain synchronous frequency domain Optimum Matching filter system after carrying out FFT operation to s (i)
Number H (i), i=0,1 ... 4095；Coefficient between synchronization signal energy bandwidth accounting 90%~100% is taken to filter as suboptimum matching
Wave device coefficient.This example takes the i=2032 in H (i), and 2033 ... 2063 are used as suboptimum matched filter coefficients, abbreviation H ' (i),
Wherein i=0,1 ... 31.
Step 2, according to system reception state, to inactive time period is received, (interference period, the saturation of receiver or sampling are saturated
Period) data are used as reception signal x (i) after carrying out zero padding processing, and (are subtracted equal to matched signal length according to real data length
Go zero-padded length) dynamic decision threshold coefficient sequence TH (t) is generated, t is data sampling instants；
Step 3, the reception that number of chips and original synchronization signal equal length are obtained and cached in receiving signal x (i) are believed
Number forms local reception signal x ' (i) after mending 896 zero behind, wherein i=0, and 1 ... 4095；FFT is carried out to x (i)
Operation is converted into frequency domain signal X (i)；
Step 4 will receive frequency domain signal X (i) and roll up by frequency point with synchronous frequency domain matched filter coefficient H ' (i)
Product asks square acquisition frequency matching result Y (f) of convolution results mould, wherein f=0, and 1 ... 4064；Reception frequency domain is calculated simultaneously
Signal energy P (f), wherein f=0,1 ... 4064；
Step 5 takes frequency matching result Y (f) to do Preliminary detection judgement: if (wherein t is to work as to Y (f) > TH (t) * P (f)
Preceding frequency-region signal initial time), then it exports matching frequency f and enters multiple cascading judgement link；Otherwise, then give up matching knot
Fruit；
Step 6 carries out cascading judgement, removal receiver, sampling and multi signal to the matching frequency f of synchronization t output
Final detection result is exported after the inspection result of void caused by harmonic wave caused by aliasing.
4, a kind of time-division multi-target jamming technology based on network key information
By taking forces network as an example, it is illustrated in figure 9 its frame structure schematic diagram, network communication process is by network initial synchronisation
Information, network maintain information (including synchronous maintain and route switching information), late networking synchronizing information, communication link setup information, build
Chain response message, business information composition, wherein business information accounting in whole network communication process is 90%.
The process flow of this method is as shown in Figure 10, specifically comprises the following steps:
Step 1, by target communication network signature analysis, know Network Synchronization maintain information, late networking synchronizing information,
Communicating link setup information is the key message in the target network, knows the leading of these key messages by signal and code stream analysis
Be all made of length be 16 PN sequence be repeated 5 times structure, thereafter carry 14ms effective information；It uses and follows by emulation confirmation
Ring auto-correlation algorithm identifies that the key message of target communication network is leading.
Step 2 continuously analyzes collected baseband signal using circulation auto-correlation algorithm, when circulation auto-correlation
The parameters such as output information type K, carrier frequency f, bandwidth W, modulation system M, modulation index h when as a result reaching decision threshold；
Step 3, according to the information type and signal parameter of output, output interfering well cluster information is interference signal carrier frequency
Rate is f, modulated signal s, interferes duration 14ms；
Step 4 continuously exports the interference signal of 14ms according to interfering well cluster information, and step 2 is entered after end of interrupt
Continue key message detection.
5, a kind of based on the synchronous tactical net countercheck inveigled
Step 1 identifies that the initial synchronisation time slot in communication process, network maintain synchronization time slot (such as synchronous frame stucture
With the synchronizing information for finding certain type radio station network)；
The data of synchronizing information are carried out down coversion, demodulation, and the synchronizing information after confirmation are pressed former lattice by step 2
Formula is modulated, framing, up-conversion, generates pseudo- synchronizing information；
Step 3 forces the category platform logout in network, synchronized detection prison in network maintenance stage transmitting interference signal
Category platform logout situation in survey grid network；
Step 4 emits pseudo- synchronizing information after node logout, then with small-power, lures logout category platform acceptance error into
Temporal information causes false networking phenomenon；
Step 5 detects Network Synchronization information at the interval for emitting pseudo- synchronizing information, and discovery occurs with new synchronizing information
Time then indicates that logout radio station is successfully induced.
Detailed description of the invention
Fig. 1 is frequency division multi-target jamming method schematic diagram；
Fig. 2 is traditional time division multi-target jamming method schematic diagram；
Fig. 3 is tactical net comprehensive situation cognitive method flow chart；
Fig. 4 is tactical communication's Target attribute recognition method flow diagram based on time-frequency sky feature；
Fig. 5 is the relational graph of correlation length and processing gain；
Fig. 6 is the schematic diagram to local code zero padding；
Fig. 7 is the tactical net object detection method signal processing flow figure based on synchronous characteristic；
Fig. 8 is the time-division multi-target jamming method schematic diagram based on network key information；
Fig. 9 is the frame structure schematic diagram of certain Military communication network；
Figure 10 is the time-division multi-target jamming flow chart based on network key information；
Figure 11 is based on the synchronous tactical net countercheck flow chart inveigled；
Figure 12 is that pseudo- synchronizing information generates step.
Claims (6)
1. a kind of tactical net countercheck based on signal identification and network reconnaissance mainly includes five component parts: 1,
Tactical net comprehensive situation cognitive method, 2, a kind of tactical communication's Target attribute recognition method based on time-frequency sky feature, 3,
A kind of tactical net object detection method based on synchronous characteristic, 4, a kind of time-division multiple target based on network key information it is dry
Disturb technology, 5, a kind of tactical net countercheck based on synchronous trick.
2. tactical net comprehensive situation cognitive method, it is characterized in that the following steps are included:
(1) according to fixed/mobile intelligence pltforms of regional demand erection at least three are scouted, so that the scope of reconnaissance of each intelligence pltform is not
Each station is kept to synchronize less than scouting region, and using time dissemination system；
(2) when each intelligence pltform accurately estimates the arrival of synchronizing information using synchronous searching algorithm using known synchronizing information
Between；
(3) Jiang Gezhan is spied out synchronizing information frequency, arrival time are transmitted to main website；
(4) when main website utilizes each synchronization signal according to the frequency, type, arrival time parameter that each station receives synchronizing information
Difference positioning algorithm is positioned, and the geographical location of each network node is calculated；Simultaneously according to synchronizing information arrival time feature into
The sorting of row net platform identifies the belonging network number of each synchronizing information；
(5) type of service is identified using the synchronous characteristic in link setup information, and to the portfolio of different service types in each network
It is counted；
(6) network node location of heterogeneous networks, type of service and portfolio size, frequency statistics feature, network numbering are turned
It is changed to battlefield tactical net situation information map.
3. a kind of tactical communication's Target attribute recognition method based on time-frequency sky feature, it is characterised in that the following steps are included:
(1) in view of the correspondence entity fought under normal conditions is carried out in prewar, and messaging parameter is relatively fixed, prewar, right
Anti- equip can receive the signal of our communication station, calculates and jumps signal beginning and ending time and Hopping frequencies collection and (or pass through Office of the Telecommunications Authority
The messaging parameter planning issued obtains), database is written into one's own side's messaging parameter.
(2) it scouts reception system and radiation signal is received by multichannel direction-finder antenna, and do FFT calculating, calculate instantaneous frequency
Spectrum；Direction finding processor calculates the showing to degree of every instantaneous spectral line.
(3) according to enemy and we's general orientation information under battlefield surroundings, direction parameter is set, is carried out at airspace filter to signal is received
Reason, the interior number of signals occurred of dilution frequency range.
(4) the only time parameter that takeoffs by airspace filter treated Frequency Hopping Signal, the consistent signal of the time parameter are calculated
It can determine whether as the signal in consolidated network, therefore the net platform signal received can be sorted according to the difference of time parameter,
And number write-in local data base.
(5) net platform signal progress frequency set statistics is sorted out to obtain to temporally parameter, local data is written into frequency set information
Library.
(6) generalized time and frequency set parameter are compared with one's own side's net platform data information in local data base, judgement
Enemy and we's attribute of signal.
4. a kind of tactical communication's object detection method based on synchronous characteristic, it is characterized in that the following steps are included:
(1) zero padding operation, the integral number power that zero padding postamble length is 2 are being carried out to object synchronization signal；And it will synchronize
Signal takes conjugation interception with interior frequency-region signal as frequency domain-matched filter coefficient after carrying out FFT operation；
(2) according to system reception state, it is used as reception signal to receiving after inactive time period data carry out zero padding processing, and according to true
Real data length generates dynamic decision threshold coefficient；
(3) signal will be received to obtain by window (window is long to be equal to half symbol lengths) progress FFT operation and receive frequency-region signal；
(4) frequency-region signal will be received and carries out convolution with synchronous frequency domain matched filter coefficient by frequency point, and seek the flat of convolution results mould
Side obtains frequency matching result；It calculates simultaneously and receives frequency-region signal energy；
(5) it takes frequency matching result to do Preliminary detection judgement: if matching result is greater than dynamic decision threshold value, exporting matching frequency
And enter cascading judgement link；If matching result is less than dynamic decision threshold value, give up matching result；
(6) cascading judgement is carried out using the court verdict of different frequencies simultaneously, is exported most after removing the inspection result of void caused by harmonic wave
Whole testing result.
5. a kind of time-division multi-target jamming based on network key information, it is characterized in that the following steps are included:
(1) target network is analyzed, obtains the key message feature in its communication network, key message mainly includes network
Synchronizing information, network maintain information, communication link setup information etc., design key information recognizer；
(2) collected baseband signal is analyzed using key message recognizer, judges whether signal of communication belongs to net
Network key message；If belonging to network key information, carrier frequency, bandwidth, the modulation system, tune for obtaining signal will be analyzed simultaneously
The output of the parameters such as index processed.
(3) according to network key information type and signal parameter, optimal interference signal parameters are calculated；
(4) it according to interference signal parameters, constructs interference waveform and exports.
6. it is a kind of based on the synchronous tactical net countercheck inveigled, it is characterized in that the following steps are included:
(1) identify that the initial synchronisation time slot in communication process, network maintain synchronization time slot；
(2) data of the above synchronizing information are subjected to down coversion, demodulation, and by the synchronizing information after confirmation press former format into
Row modulation, framing, up-conversion, generate puppet synchronizing information (；
(3) it maintains time slot to discharge interference signal in network, forces in its net and belong to platform logout；
(4) after node logout, then with the pseudo- synchronizing information of small-power release, the time letter of logout category platform acceptance error is lured into
Breath, causes false networking phenomenon.
(5) by scout, detection network maintain time slot new time location, judge the node whether come into vacation enter it is netted
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810741946.1A CN109286945A (en) | 2018-07-05 | 2018-07-05 | A kind of tactical net countercheck based on signal identification and network reconnaissance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810741946.1A CN109286945A (en) | 2018-07-05 | 2018-07-05 | A kind of tactical net countercheck based on signal identification and network reconnaissance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109286945A true CN109286945A (en) | 2019-01-29 |
Family
ID=65186052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810741946.1A Pending CN109286945A (en) | 2018-07-05 | 2018-07-05 | A kind of tactical net countercheck based on signal identification and network reconnaissance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109286945A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995311A (en) * | 2019-12-20 | 2020-04-10 | 江苏大洋海洋装备有限公司 | Method and device for detecting and receiving frequency hopping signal of air route environment detection |
| CN111476288A (en) * | 2020-04-03 | 2020-07-31 | 中国人民解放军海军航空大学 | Intelligent perception method for cognitive sensor network to electromagnetic behaviors with unknown threats |
| CN111490802A (en) * | 2020-05-20 | 2020-08-04 | 中科泰格(北京)科技有限公司 | Lifting platform-based ultrashort wave communication interference source equipment |
| CN112422152A (en) * | 2020-11-05 | 2021-02-26 | 中国人民解放军32802部队 | Communication relation recognition and processing method for communication service network |
| CN113049885A (en) * | 2021-02-08 | 2021-06-29 | 浙江大学 | Multi-agent intelligent electronic interference method based on information sharing |
| CN114301498A (en) * | 2021-12-30 | 2022-04-08 | 中国电子科技集团公司第五十四研究所 | Behavior identification method and system for frequency hopping communication radiation source |
| CN116782291A (en) * | 2023-08-22 | 2023-09-19 | 北京海格神舟通信科技有限公司 | Method and system for extracting data |
| CN118139087A (en) * | 2024-04-29 | 2024-06-04 | 中国电子科技集团公司第五十四研究所 | Non-cooperative active exploring wireless communication network topology connection relation identification method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020183069A1 (en) * | 2001-04-25 | 2002-12-05 | David Myr | Method and system for mobile station positioning in cellular communication networks |
| CN106160784A (en) * | 2015-03-03 | 2016-11-23 | 商升特公司 | Communication equipment in cellular band and method |
| CN107463262A (en) * | 2017-08-14 | 2017-12-12 | 中国电子科技集团公司第二十八研究所 | A kind of multi-person synergy exchange method based on HoloLens |
| CN111313980A (en) * | 2020-02-07 | 2020-06-19 | 天津大学 | Channel dynamic negotiation multi-address access control method based on receiving queue space-time mapping |
-
2018
- 2018-07-05 CN CN201810741946.1A patent/CN109286945A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020183069A1 (en) * | 2001-04-25 | 2002-12-05 | David Myr | Method and system for mobile station positioning in cellular communication networks |
| CN106160784A (en) * | 2015-03-03 | 2016-11-23 | 商升特公司 | Communication equipment in cellular band and method |
| CN107463262A (en) * | 2017-08-14 | 2017-12-12 | 中国电子科技集团公司第二十八研究所 | A kind of multi-person synergy exchange method based on HoloLens |
| CN111313980A (en) * | 2020-02-07 | 2020-06-19 | 天津大学 | Channel dynamic negotiation multi-address access control method based on receiving queue space-time mapping |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995311A (en) * | 2019-12-20 | 2020-04-10 | 江苏大洋海洋装备有限公司 | Method and device for detecting and receiving frequency hopping signal of air route environment detection |
| CN111476288A (en) * | 2020-04-03 | 2020-07-31 | 中国人民解放军海军航空大学 | Intelligent perception method for cognitive sensor network to electromagnetic behaviors with unknown threats |
| CN111490802A (en) * | 2020-05-20 | 2020-08-04 | 中科泰格(北京)科技有限公司 | Lifting platform-based ultrashort wave communication interference source equipment |
| CN112422152A (en) * | 2020-11-05 | 2021-02-26 | 中国人民解放军32802部队 | Communication relation recognition and processing method for communication service network |
| CN112422152B (en) * | 2020-11-05 | 2021-07-20 | 中国人民解放军32802部队 | Communication relation recognition and processing method for communication service network |
| CN113049885A (en) * | 2021-02-08 | 2021-06-29 | 浙江大学 | Multi-agent intelligent electronic interference method based on information sharing |
| CN113049885B (en) * | 2021-02-08 | 2022-06-07 | 浙江大学 | Multi-agent intelligent electronic interference method based on information sharing |
| CN114301498A (en) * | 2021-12-30 | 2022-04-08 | 中国电子科技集团公司第五十四研究所 | Behavior identification method and system for frequency hopping communication radiation source |
| CN116782291A (en) * | 2023-08-22 | 2023-09-19 | 北京海格神舟通信科技有限公司 | Method and system for extracting data |
| CN116782291B (en) * | 2023-08-22 | 2023-10-31 | 北京海格神舟通信科技有限公司 | Method and system for extracting data |
| CN118139087A (en) * | 2024-04-29 | 2024-06-04 | 中国电子科技集团公司第五十四研究所 | Non-cooperative active exploring wireless communication network topology connection relation identification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109286945A (en) | A kind of tactical net countercheck based on signal identification and network reconnaissance | |
| US11470572B2 (en) | Systems, methods, and devices for geolocation with deployable large scale arrays | |
| US11706651B1 (en) | Systems, methods, and devices for automatic signal detection with temporal feature extraction within a spectrum | |
| US11234146B2 (en) | Systems, methods, and devices having databases and automated reports for electronic spectrum management | |
| US12003990B2 (en) | Systems, methods, and devices for electronic spectrum management | |
| EP3571862B1 (en) | Systems, methods, and devices for automatic signal detection with temporal feature extraction within a spectrum | |
| Gutiérrez et al. | Envelope distribution and Doppler spectrum of V2V channels at 5.9 GHz in mountainous roads | |
| CN113203985B (en) | Direct positioning method for shortwave same-frequency signals | |
| Wolf et al. | Accurate narrowband LPWA ranging: Principles, performance in AWGN and multipath channels | |
| CN116430345B (en) | 5G network-based low-altitude unmanned aerial vehicle multi-target reflection source separation method | |
| Liu et al. | A phase-based ranging method for fast frequency hopping system | |
| Zeng et al. | Two‐Stage Channel Adaptive Algorithm for Unmanned Aerial Vehicles Localization with Cellular Networks | |
| Li et al. | Radar Network Performance Analysis Based on EM Signal Distribution Modeling | |
| CN109673020A (en) | A kind of fusion type frequency spectrum detecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190129 |