CN106772336B - Radar detection and the integrated system of communication check and implementation method - Google Patents
Radar detection and the integrated system of communication check and implementation method Download PDFInfo
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- CN106772336B CN106772336B CN201710111653.0A CN201710111653A CN106772336B CN 106772336 B CN106772336 B CN 106772336B CN 201710111653 A CN201710111653 A CN 201710111653A CN 106772336 B CN106772336 B CN 106772336B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S2013/0236—Special technical features
- G01S2013/0272—Multifunction radar
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- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention belongs to technical field of radar communication, a kind of radar detection and the integrated system of communication check and implementation method are disclosed, system includes: radar-communication integration signal transmission channel, communication check channel and at least one radar detection channel；Sequentially connected data stream generation unit, data cutter unit, DEU data encryption unit, signal map unit and transmitter are provided in radar-communication integration signal transmission channel；Sequentially connected first receiver, detecting signal unit, signal map unit, data decryption unit, data combination unit, parity elements and communication detection unit are provided in communication check channel；Sequentially connected second receiver, communication information compensating unit, matched filtering unit, pulse accumulation unit and radar detection unit are provided in the detection channels of radar；It can be achieved at the same time communication and radar detection function, and its distance side lobe level is lower, noise jamming is less.
Description
Technical field
The invention belongs to technical field of radar communication more particularly to a kind of radar detection and the integrated systems of communication check
And implementation method, suitable for solving, the radar-communication integration signal distance sidelobe level radar-communication integration is higher to be asked
Topic.
Background technique
Multifunctional comprehensive integrated electronic system includes two kinds of electronic equipments of radar and communication, and the realization of this system must
Ask the integration of radar and communication system.But for a long time, field of radar and the communications field due to by respective research object not
It is strictly distinguished together, current research is as a result caused largely separately to study radar system with communication system.It is true
On, radar and communication are as acquisition of information, processing, transmission and the typical way of exchange, although in hardware device and software architecture
On have apparent difference, but from the point of view of their working principle, system structure, working frequency range etc., the two has much again
Similarity, so implementing integrated design to radar and communication, not only condition has, but also hardware resource sharing is also feasible
, combination and resource-sharing are carried out to radar system and communication system, are not only the comprehensive one of future war platform clectronic
The main direction of development of change system, and radar and communication are realized into multifunctional all design, system can be greatlyd improve
Fight capability, and overcome traditional information transmission speed slow, the deficiency of the aspect such as confidentiality difference and rate of false alarm height.
It is following to realize that radar-communication integration systematic research mainly has three ways, such as at present:
(1) timesharing system: radar system and communication system share radar antenna, the two time-sharing work.This system is not required to
New radar signal waveform and communication signal waveforms are studied, is implemented simple；But inflexible, when radar detection, may deposit
In " blind area "；
(2) front of phased-array radar: being divided into different regions, is respectively used to radar detection by partial wave beam system, is led to
Letter and identification function.This system can be realized simultaneously communication and radar detection function, but in the case where gross energy is certain, thunder
It is reduced up to probe power, and there is interference between radar and communication；
(3) simultaneously system: be modulated life using signal of communication as baseband signal and using radar detection signal as carrier wave
Integralization signal.This system can be realized simultaneously communication and radar detection function, but technology is not overripened, distance side lobe electricity
It is flat higher.
Summary of the invention
The present invention in view of the shortcomings of the prior art, provides a kind of radar detection and the integrated system of communication check and realization
Method can be achieved at the same time communication and radar detection function, can achieve radar-communication integration signal with lower distance
Sidelobe level, noise jamming are less.
In order to achieve the above objectives, the present invention is realised by adopting the following technical scheme.
Technical solution one:
A kind of radar detection and the integrated system of communication check, the system comprises: radar-communication integration signal hair
Penetrate channel, communication check channel and at least one radar detection channel；
Sequentially connected data stream generation unit is provided in the radar-communication integration signal transmission channel, data are cut
Unit, DEU data encryption unit, signal map unit and transmitter are cut, is provided with first antenna on the transmitter；
Sequentially connected first receiver, detecting signal unit, signal mapping list are provided in the communication check channel
Member, data decryption unit, data combination unit, parity elements and communication detection unit are set on first receiver
It is equipped with the second antenna；
Sequentially connected second receiver, communication information compensating unit, matching are provided in the detection channels of the radar
Filter unit, pulse accumulation unit and radar detection unit are provided with third antenna on second receiver.
Technical solution two:
A kind of radar detection and the integrated implementation method of communication check, the method are applied to described in technical solution one
System, the implementation method include:
Step 1, radar-communication integration signal transmission channel generates radar-communication integration signal；
The data stream generation unit generates preset original data stream, successively carries out data to the original data stream and cuts
It cuts, the mapping of data encryption and radar signal, to obtain radar baseband signal, the radar baseband signal is sent to described
Transmitter, the transmitter are modulated the radar baseband signal, obtain the radar-communication integration signal, the hair
It penetrates machine and the radar-communication integration signal is emitted to wireless channel by the first antenna；
Step 2, the reception and detection of signal of communication are carried out using communication check channel；
Second antenna receives the radar-communication integration signal, and the radar-communication integration signal is sent to
First receiver, so that first receiver exports the radar baseband signal containing clutter；
The detecting signal unit detects the radar baseband signal containing clutter, determines communication standard, and
The radar baseband signal containing clutter is received according to the communication standard, the signal after being detected, Jin Eryi
The secondary signal to after the detection carries out back mapping, decryption and data and combines, and final communication data is obtained, finally to described
Final communication data carries out even-odd check and communication check；
Step 3, the reception and detection of radar detection signal are carried out using a radar detection channel；
The third antenna receives the radar-communication integration signal, and the radar-communication integration signal is sent to
Second receiver, so that second receiver exports the radar baseband signal containing clutter；
The communication information compensating unit carries out communication information compensation to the radar baseband signal containing clutter, obtains
Compensated radar signal；And then matched filtering, pulse accumulation are successively carried out to the compensated radar signal, obtain pulse
Radar signal after accumulation finally detects the radar signal after the pulse accumulation.
The present invention provides a kind of radar detection and the integrated system of communication check and implementation method, the communication to be sent
Data flow uses a waveform mapping block, which is mapped to a new code space, and then obtain integrated letter
Number, and launched by the transmitting antenna of radar transmitter.Here we can assume that transmitting/receiving communication link work at two
In different frequencies, different communication symbols can be modulated in different frequencies and be used for transmission reconciliation by such integral system
It adjusts, in this case, is mapped using a kind of phase-coded waveform；It can be handled using communicating and detecting two in receiving end
Channel is respectively handled the radar-communication integration signal with different modes, one is by radar-communication integration signal
It as signal of communication, is sent in communication check channel, it is detected in the way of receiving signal of communication, is reversely reflected
It penetrates, decrypts, combination, even-odd check；The second is it is logical to send radar detection as radar signal by radar-communication integration signal
In road, it is sent to matched filter in the way of receiving radar detection signal, carries out pulse compression, pulse accumulation, obtains
Its time delay and Doppler frequency shift complete the function of radar detection.It can also be with when only needing radar detection function in practical application
Radar-communication integration signal is received only with radar detection channel, completes radar detection function.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of radar detection provided in an embodiment of the present invention and the integrated system structure diagram of communication check；
Fig. 2 is the structural schematic diagram of radar-communication integration signal transmission channel provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram in communication check channel provided in an embodiment of the present invention and a radar detection channel；
Fig. 4 is the structural schematic diagram in two radar detection channels provided in an embodiment of the present invention；
Fig. 5 is the ambiguity function schematic diagram of radar-communication integration signal provided in an embodiment of the present invention；
Fig. 6 is the autocorrelation performance schematic diagram of radar-communication integration signal provided in an embodiment of the present invention；
Fig. 7 is the cross correlation energy schematic diagram of four radar waveforms provided in an embodiment of the present invention combination.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of radar detection and the integrated system of communication check, with reference to Fig. 1, the system packet
It includes: radar-communication integration signal transmission channel, communication check channel and at least one radar detection channel；
Specifically, as shown in Fig. 2, being provided with sequentially connected data in the radar-communication integration signal transmission channel
Stream generation unit, data cutter unit, DEU data encryption unit, signal map unit and transmitter are arranged on the transmitter
There is first antenna；
Specifically, as shown in figure 3, being provided with sequentially connected first receiver, signal inspection in the communication check channel
Survey unit, signal map unit, data decryption unit, data combination unit, parity elements and communication detection unit, institute
It states and is provided with the second antenna on the first receiver；
As shown in figure 3, being provided with sequentially connected second receiver, communication information compensation list in the radar detection channel
Member, matched filtering unit, pulse accumulation unit and radar detection unit are provided with third antenna on second receiver.
Specifically, the first antenna is transmitting antenna, second antenna and the third antenna are the same reception
Antenna, first receiver and second receiver are different receivers, and the signal of the same receiving antenna
Output end is connect with the signal input part of the signal input part of first receiver, second receiver respectively；
Alternatively, the first antenna is transmitting antenna, second antenna and the third antenna are the same reception day
Line, first receiver and second receiver are the same receiver, and the signal of the same receiving antenna is defeated
Outlet is connect with the signal input part of the same receiver；
Alternatively, the first antenna, second antenna and the third antenna are to connect with signal transmission function, signal
The same full-duplex antenna of function is received, the signal of the signal input part and the transmitter of the same full-duplex antenna is defeated
Outlet connection, the signal output end of the full-duplex antenna signal with first receiver, second receiver respectively
Input terminal connection.
Further, as shown in figure 4, if setting is there are two radar detection channel in the system, in the system also
Comprising integrated unit, two input terminals of the integrated unit respectively with the pulse accumulation unit in two radar detection channels
Signal output end connection, two output ends of the integrated unit respectively with the radar detection unit in two radar detection channels
Signal input part connection.
The embodiment of the invention also provides a kind of radar detection and the integrated implementation method of communication check, the method is answered
For in system described in above-described embodiment, the implementation method includes:
Step 1, radar-communication integration signal transmission channel generates radar-communication integration signal；
The data stream generation unit generates preset original data stream, successively carries out data to the original data stream and cuts
It cuts, the mapping of data encryption and radar signal, to obtain radar baseband signal, the radar baseband signal is sent to described
Transmitter, the transmitter are modulated the radar baseband signal, obtain the radar-communication integration signal, the hair
It penetrates machine and the radar-communication integration signal is emitted to wireless channel by the first antenna.
Specifically, the generation of radar-communication integration signal can be achieved by the steps of when Practical Project is realized
Journey:
1a) burst of data stream { s is inputted in the data stream generation unit of radar-communication integration signal transmission channeln, it takes
Value is -1,1, length N, and is normalized；Then the data flow is cut, so that each data block after cutting
Length is m, then always cutting number is n=ceil (N/m), and ceil () indicates the number that rounds up, to obtain communicating data block；
1b) communicating data block is encrypted, encrypted each data block length is set as p here；
It 1c) next needs each encrypted communicating data block carrying out radar signal mapping, primarily to solution
The contradiction for certainly communicating the signal strategy between detections of radar, that is, need exist for a waveform mapping block, that is to say, that will be original
Code space is mapped to a new code space, the element inside this new code space should have low distance side lobe level and it is low mutually
Sidelobe level.At the same time, this mapping space should also have element as much as possible to transmit information to greatest extent.Mapping
The communicating data block of script becomes corresponding radar baseband signal afterwards, if radar baseband signal is s (t), length is l (l > p),
And the radar baseband signal should meet two conditions: with receiver multiple display modes compatible and feature required by radar waveform can be met；
Radar baseband signal s (t) obtained above 1d) is sent to transmitter, and is modulated by radar transmitter,
Modulated signal, i.e. radar-communication integration signal are obtained, if radar-communication integration signal is s ' (t), later radar communication one
Body signal is sent in wireless channel by the transmitting antenna of radar transmitter.
Step 2, the reception and detection of signal of communication are carried out using communication check channel；
Second antenna receives the radar-communication integration signal, and the radar-communication integration signal is sent to
First receiver, so that first receiver exports the radar baseband signal containing clutter；
The detecting signal unit detects the radar baseband signal containing clutter, determines communication standard, and
The radar baseband signal containing clutter is received according to the communication standard, the signal after being detected, Jin Eryi
The secondary signal to after the detection carries out back mapping, decryption and data and combines, and final communication data is obtained, finally to described
Final communication data carries out even-odd check and communication check.
Specifically, radar-communication integration signal s ' (t) is received through the receiving antenna of radar receiver, because receiving
There is noise inside machine, if receiver internal noise is nc(t), so signal in receivers is rc(t)=s ' (t)+nc(t),
Signal rc(t) it is demodulated inside receiver, obtains the radar baseband signal r ' containing clutterc(t)；Next to radar base
Band signal r 'c(t) it is first detected, in order to carry out the operation of next step, carrying out the function that detection is primarily due to communicate is
In order to allow the receiving end of one's own side to receive corresponding information, then the rule of communication for receiving and dispatching both ends must know mutually；Know after detection
The communication standard that transmitting terminal takes the data flow of script then can receive signal according to corresponding communication standard, after detection
Signal carry out back mapping, the data block encrypted；It is decrypted to obtain the data block of script；Finally all
Data chunk is altogether to get the communication data stream for arriving script.
Step 3, the reception and detection of radar detection signal are carried out using a radar detection channel；
The third antenna receives the radar-communication integration signal, and the radar-communication integration signal is sent to
Second receiver, so that second receiver exports the radar baseband signal containing clutter；
The communication information compensating unit carries out communication information compensation to the radar baseband signal containing clutter, obtains
Compensated radar signal；And then matched filtering, pulse accumulation are successively carried out to the compensated radar signal, obtain pulse
Radar signal after accumulation finally detects the radar signal after the pulse accumulation.
It should be noted that the signal exported from matched filter is carried out pulse compression, can be equivalent in this way
The average emitted power of long pulse can obtain the distance resolution of corresponding short pulse again simultaneously；Pulse accumulation is carried out later, i.e.,
The echo of obtained pulse is added, to increase the sensitivity of radar.
Specifically, when the matched filtering unit carries out matched filtering to the compensated radar signal, the matching
The acquisition methods of filter weights in filter unit are as follows:
The matched filtering unit obtains the radar baseband signal exported from the signal map unit, and according to the thunder
The filter weights of the matched filtering unit are set up to baseband signal, i.e., the output signal of matched filter through the communication information by mending
The cross-correlation function of the delayed duplicate of the signal and the radar baseband signal exported from map unit that obtain after repaying is calculated；
Alternatively, the matched filtering unit obtains the signal exported from the data decryption unit, and according to from the number
The filter weights of the matched filtering unit are set according to the signal that decryption unit exports, i.e., the output signal of matched filter is by passing through
The cross-correlation function of the delayed duplicate of the signal and the signal exported from the data decryption unit that are obtained after communication information compensation
It is calculated.
Specifically, radar-communication integration signal s ' (t) is received through the receiving antenna of radar receiver, because receiving
There is noise inside machine, if receiver internal noise is nr(t), so signal in receivers is rr(t)=s ' (t)+nr(t),
Signal rr(t) it is demodulated inside receiver, obtains the radar baseband signal r ' containing clutterr(t)；Because radar base band is believed
It will receive the interference of the communication information in number, therefore communication information compensation first can be carried out to it；Next matched filtering is carried out,
Signal obtains maximum instantaneous SNR by matched filter, when carrying out matched filtering, signal r 'r(t) there are two types of processing modes:
A kind of processing mode utilizes the signal of transmitting antenna own transmission, and matched filtering is according to transmitting antenna own transmission
Signal sets weight, provides specific transmitting signal by transmitting terminal access；
Another processing mode is then the transmitting signal that also can receive corresponding transmitter according to communication check channel, thus
Using the matched filter setting weight that the obtained transmitting signal in communication check channel is in radar detection channel, i.e., at this time
Matched filtering weight is provided by communications reception access, and to obtain the accurate transmitting letter of transmitting terminal by deciphering module in advance
Number, it is handled after matched filtering by other radar detections and realizes target acquisition.
Radar detection provided in an embodiment of the present invention and the integrated system of communication check, will at least there is a radar detection
Two radar detection channels also can be used in channel, and when using two radar detection channels, system block diagram will be as shown in figure 4, will
The pulse accumulation signal in two channels is merged, and to improve system detection performance, then is sent respectively to radar detection unit, complete
At radar detection function.
It should be noted that receiving antenna corresponding to radar detection channel and transmitting radar antenna can be the same day
Line.In addition, the used receiver in radar detection channel and communication check channel can be same, but receiver is corresponding
Receiving antenna can be same can also be different.Area has been carried out with subscript to received signal above for two channels are distinguished
Point, when actually the receiver used by radar detection channel and communication check channel is same, there is nc(t)=nr(t),
rc(t)=rr(t), r 'c(t)=r 'r(t)。
You need to add is that receiving antenna receives signal, if it is optional for sending signal to communication check channel, such as
There is no need to communications reception functions for the operating mode of navigation, and in such cases, receiving end only needs radar detection logical
Radar detection function is completed in road, completes communication function without communication check channel.
Effect of the invention is further illustrated by following emulation experiment:
1. simulation parameter: MATLAB software programming is used, using 256 symbols being randomly generated as the data of transmitting
Stream, every 4 symbols are a data block, that is, are cut into 64 pieces, each data block is all made of the progress of the Barker code in phase Code
Mapping carries out the emulation of ambiguity function to signal under this example.
2. emulation content:
Emulation 1, the ambiguity function figure of system is as shown in Figure 5, it can be seen that has single spike in figure, can be used for thunder
Up to detection, the feasibility of system is illustrated；And main lobe is more sharp, can preferably tell different targets；Meanwhile it is such as attached
Shown in Fig. 6, the autocorrelation performance of signal is good.
The cross-correlation function of emulation 2, the combination of four radar waveforms is as shown in Figure 7.According to the mapping block in system block diagram
Thought, the waveform of suitable radar detection can be converted to by communication data stream, for simplicity, herein only to communications codes
Member carries out biphase coding modulation, obtains corresponding radar waveform, and appoint and 4 radar waveforms is taken to be combined, it can be seen that four
Cross-correlation between waveform is smaller, this can reduce interfering with each other between waveform；When only observing one of waveform, can see
Distance side lobe is lower out, and distance resolution then can be improved in this way and reduce the interference of other distance unit target echoes；By
It is all relatively low from/cross correlation in the waveform obtained in this way, so the distance side lobe level value of whole system can also be dropped
It is low, while also illustrating the feasibility of the mapping method.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (3)
1. a kind of radar detection and the integrated system of communication check, which is characterized in that the system comprises: radar communication one
Change signal transmission channel, communication check channel and at least one radar detection channel；
Sequentially connected data stream generation unit, data cutting list are provided in the radar-communication integration signal transmission channel
Member, DEU data encryption unit, signal map unit and transmitter are provided with first antenna on the transmitter；
Sequentially connected first receiver, detecting signal unit, signal map unit, number are provided in the communication check channel
According to decryption unit, data combination unit, parity elements and communication detection unit, is provided on first receiver
Two antennas；
Sequentially connected second receiver, communication information compensating unit, matched filtering are provided in the detection channels of the radar
Unit, pulse accumulation unit and radar detection unit are provided with third antenna on second receiver；
The signal map unit is waveform mapping block；
It also include integrated unit in the system, the fusion is single if radar detection channel there are two settings in the system
Two input terminals of member are connect with the signal output end of the pulse accumulation unit in two radar detection channels respectively, the fusion
Two output ends of unit are connect with the signal input part of the radar detection unit in two radar detection channels respectively.
2. a kind of radar detection according to claim 1 and the integrated system of communication check, which is characterized in that
The first antenna is transmitting antenna, and second antenna and the third antenna are the same receiving antenna, described the
One receiver and second receiver are different receivers, and the signal output end of the same receiving antenna respectively with
The signal input part connection of the signal input part of first receiver, second receiver；
Alternatively, the first antenna is transmitting antenna, second antenna and the third antenna are the same receiving antenna, institute
Stating the first receiver and second receiver is the same receiver, and the signal output end of the same receiving antenna with
The signal input part of the same receiver connects；
Alternatively, the first antenna, second antenna and the third antenna are to receive function with signal transmission function, signal
The same full-duplex antenna of energy, the signal input part of the same full-duplex antenna and the signal output end of the transmitter
Connection, the signal output end of the full-duplex antenna are inputted with the signal of first receiver, second receiver respectively
End connection.
3. a kind of radar detection and the integrated implementation method of communication check, the method is applied to as appointed in claim 1-2
In system described in one, which is characterized in that the implementation method includes:
Step 1, radar-communication integration signal transmission channel generates radar-communication integration signal；
The data stream generation unit generates preset original data stream, successively to the original data stream carry out data cutting,
Data encryption and radar signal mapping, to obtain radar baseband signal, are sent to the hair for the radar baseband signal
Machine is penetrated, the transmitter is modulated the radar baseband signal, obtains the radar-communication integration signal, the transmitting
The radar-communication integration signal is emitted to wireless channel by the first antenna by machine；
Wherein, each encrypted communicating data block is subjected to radar signal mapping, needs a waveform mapping block, it will be former
Beginning code space is mapped to a new code space, and the element inside new code space should have low distance side lobe level and low mutual side
Valve level；
Step 2, the reception and detection of signal of communication are carried out using communication check channel；
Second antenna receives the radar-communication integration signal, and the radar-communication integration signal is sent to first
Receiver, so that first receiver exports the radar baseband signal containing clutter；
The detecting signal unit detects the radar baseband signal containing clutter, determines communication standard, and according to
The communication standard receives the radar baseband signal containing clutter, the signal after being detected, and then successively right
Signal after the detection carries out back mapping, decryption and data combination, obtains final communication data, finally to described final
Communication data carries out even-odd check and communication check；
Step 3, the reception and detection of radar detection signal are carried out using a radar detection channel；
The third antenna receives the radar-communication integration signal, and the radar-communication integration signal is sent to second
Receiver, so that second receiver exports the radar baseband signal containing clutter；
The communication information compensating unit carries out communication information compensation to the radar baseband signal containing clutter, is compensated
Radar signal afterwards；And then matched filtering, pulse accumulation are successively carried out to the compensated radar signal, obtain pulse accumulation
Radar signal afterwards finally detects the radar signal after the pulse accumulation；
Wherein, when the matched filtering unit carries out matched filtering to the compensated radar signal, the matched filtering list
The acquisition methods of filter weights in member are as follows:
The matched filtering unit obtains the radar baseband signal exported from the signal map unit, and according to the radar base
Band signal sets the filter weights of the matched filtering unit；
Alternatively, the matched filtering unit obtains the signal exported from the data decryption unit, and according to from the data solution
The signal of close unit output sets the filter weights of the matched filtering unit.
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| CN107329130B (en) * | 2017-06-26 | 2019-05-21 | 电子科技大学 | A kind of signal processing method based on radar-communication integration system receiving terminal |
| CN111279210B (en) * | 2017-08-24 | 2023-09-29 | 瑞典爱立信有限公司 | Integrated wireless communication and radar system |
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