CN106059653A - Aircraft signal transmission system and signal transmission method thereof - Google Patents
Aircraft signal transmission system and signal transmission method thereof Download PDFInfo
- Publication number
- CN106059653A CN106059653A CN201610622976.1A CN201610622976A CN106059653A CN 106059653 A CN106059653 A CN 106059653A CN 201610622976 A CN201610622976 A CN 201610622976A CN 106059653 A CN106059653 A CN 106059653A
- Authority
- CN
- China
- Prior art keywords
- unit
- message
- ads
- coding
- symbol
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses an aircraft signal transmission system, comprising a BDS (BeiDou Navigation Satellite System) antenna for receiving satellite navigation information, a BDS unit connected with the BDS antenna, an ADS-B (Automatic Dependent Surveillance-Broadcast) interface unit connected with the BDS unit, an ADS-B message coding unit connected with the ADS-B interface unit, a 1090ES radio frequency transmitting unit connected with the ADS-B message coding unit and a BeiDou transmitting unit. The system can realize whole airspace transmission within the coverage of a BeiDou satellite, so only one BeiDou ground command center for receiving message information is needed, no-blind zone and whole airspace coverage in the Asia-Pacific region can be realized at present, and the system can realize global no-blind zone coverage in the future with the global coverage of BeiDou; meanwhile, messages are transmitted by matching of a PPS (Pulse Per Second) time slot and a local random time slot to avoid transmitting interference, and RS coding is realized in a good message coding mode.
Description
Technical field
The present invention relates to Aerial vehicle position field, specifically aircraft signal transmission system and method for transmitting signals thereof.
Background technology
ADS-B (Automatic Dependent Surveillance-Broadcast) is that ICAO is in new navigation system
Middle recommended a kind of emerging surveillance technology, is the aircraft operation monitoring skill communicated with ground/air data link based on satellite fix
Art, core be from airborne equipment aircraft position data by Ground-to-Air Data Link be sent to automatically real-time ground receiver and
Processing system, provides accurate, efficient for related personnel and monitors service.
The core technology of ADS-B system includes: GNSS and air-ground/absolutely empty Data-Link.Make a general survey of the whole world, currently used
ADS-B GNSS signal source is mostly GPS navigation signal source, and only the system of minority uses Glonass as backup navigation letter
Number source.At present, Beidou satellite navigation has built up the region satellite navigation system covering region, Asia, can be that the Big Dipper is the people
The application of boat navigation field provides technical foundation.
ADS-B Data-Link system currently mainly includes three kinds: 1) the 1090ES number based on transponder of S mode
According to chain；2) general-purpose accessing transceiver (UAT) Data-Link；3) pattern 4 very-high-frequency PECVD (VDL-4).
The common feature of these three Data-Link is: the finiteness of transmission range, 1090ES, UAT pattern, VDL4 pattern
The communication distance maximum of ADS-B is less than 400KM, it is therefore desirable to the regional construction ADS-B ground within every radius 400KM connects
Receive station.
Summary of the invention
The present invention provides a kind of aircraft signal transmission system and method for transmitting signals thereof, solves the limited of transmission range
Property, 1090ES, UAT pattern, the communication distance maximum of VDL4 Mode A DS-B are less than 400KM, it is therefore desirable at every radius
The problem of the regional construction ADS-B grounded receiving station within 400KM.
Aircraft signal transmission system, including the BDS antenna of reception satellite navigation information, mono-with the BDS that BDS antenna is connected
Unit, the ADS-B interface unit being connected with BDS unit, the ADS-B message coding unit being connected with ADS-B interface unit, with ADS-
The UAT rf transmitter unit of B message coding unit connection and Big Dipper transmitter unit.
Present invention research based on the Big Dipper airborne ADS-B emitter, the GNSS navigation sources selecting the Big Dipper to be system, its data
Chain supports that traditional ADS-B UAT data link and Big Dipper short message communication link are double mode, and the message of ADS-B is pressed by this equipment
Encode according to ADS-B, transmit on the UAT link of ADS-B simultaneously, pass in Big Dipper short message data link simultaneously
Defeated, it is achieved the transmission mechanism that dual link is parallel.The UAT link i.e. UAT rf transmitter unit of ADS-B, Big Dipper short message Data-Link
Road i.e. Big Dipper transmitter unit.
At airport and terminal area, the ADS-B grounded receiving station on airport can receive this equipment on UAT link according to 1/s
Broadcast ADS-B message, in the air route district of remote location, the region that especially ADS-B earth station cannot cover, this equipment continues will
The short message utilizing the Big Dipper launches ADS-B message with relatively low frequency (1-5 beat/min), receives for Big Dipper ground command center,
Owing to this message is by satellite broadcasting, so this link is not affected by distance, can be real in the scope of big-dipper satellite covering
Now full spatial domain transmission, the Big Dipper ground command center being therefore used for receiving this message information has only to build one, currently may be used
Realizing the non-blind area of Asia-Pacific region, the covering in full spatial domain, in future, along with the Global coverage of the Big Dipper, this equipment can realize the whole world
Non-blind area covers.
Preferably, described BDS/GPS unit includes the interface unit A that Base Band Unit A and Base Band Unit A is connected, described
ADS-B interface unit includes interface unit B, the NIC correction verification module being connected with interface unit B, and interface unit A passes through interface unit
B with NIC correction verification module is connected, and NIC correction verification module is connected to ADS-B message coding unit.Base is completed by upper BDS/GPS unit
Tape handling, completes the verification of location information by ADS-B interface unit.
Beidou antenna receives the positional information from satellite, through Base-Band Processing, by standard time pulse by outside
Positional information is delivered to ADS-B interface unit by fracture and RS232 interface, and (navigation is complete through NIC correction verification module for this positional information
Property verification) will verification after positional information, send into ADS-B message coding unit.
Described ADS-B message coding unit includes the synchronization judge module connected with NIC correction verification module, synchronizes judge module
Connecting and have RS coding module, RS coding module connects CRC24 correction verification module, and CRC24 correction verification module connects buffer storage,
Also include that local slot unit, ADS-B send control module, when ADS-B sends control module connection NIC correction verification module, this locality
Gap unit, buffer storage.
By said structure, for controlling the transmission of location information, select proper emission gap, in order to location information sent out
Giving other equipment, ADS-B message coding unit is to positional information coded treatment, after having encoded, forms the message encoded
Information, the message information now encoded can not be launched, and utilizes the local time slot that local slot unit can produce, and utilization is fixed
The position PPS time slot that carries of information, by ADS-B send judgement this locality time slot of control module consistent with PPS time slot after just will volume
The good message information of code is launched, here it is utilize outside BDS synchronizing signal PPS rising edge to produce transmission time slot.
Described Big Dipper transmitter unit includes radio frequency unit that Base Band Unit B is connected and radio frequency unit with Base Band Unit B even
The BDS antenna connect, also includes that the SIM being connected with Base Band Unit B, Base Band Unit B are connected with buffer storage.Launch single at the Big Dipper
In unit's (Big Dipper short message transmitter unit), message information (ADS-B message) input encoded enters Big Dipper message communication unit,
This message is sent to Big Dipper command centre by the subscriber card of the Big Dipper by satellite link.
Described UAT rf transmitter unit includes the merit that the prevention that CPFSK modulation is connected is connected with prevention with CPFSK modulation
Put the 978MHz antenna being connected with power amplifier, also include modulating, with CPFSK, the mixing being connected, the local oscillator being connected with mixing, CPFSK
Modulation is connected with buffer storage.In UAT rf transmitter unit, the message information (ADS-B message) encoded through local oscillator,
After mixing, CPFSK modulation, preposition amplification, promotion, power amplification in 978MHZ frequency RF broadcast.
Preferably, the present invention utilizes RS coding module to carry out coded treatment, and described RS coding module includes judging with Tong Bu
Module be connected synchronization judge module receive unit, synchronize judge module receive unit connect have Block RAM, system sequence and
Type of coding control circuit, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, also include G(2m) computing circuit, Parasites Fauna s,
Parasites Fauna w, Parasites Fauna b outfan all and G(2m) computing circuit connection, G(2m) outfan of computing circuit and depositor
Group s, Parasites Fauna w, the input of Parasites Fauna b connect, and also include MUX(multiplexer), Block RAM(block is deposited at random
Reservoir) outfan, system sequence and the outfan of type of coding control circuit, Parasites Fauna s outfan all with MUX even
Connecing, MUX is also associated with packet parsing unit, the type of message indication end of system sequence and type of coding control circuit and message solution
Analysis unit connects, Block RAM, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, G(2m) computing circuit is all by system sequence
And the control of type of coding control circuit, described packet parsing unit is connected with CRC24 correction verification module.
Synchronizing signal is detected, according to same by synchronizing the original base band sequence of symhols in judge module processing position information
Step signal judges that synchronizing signal arrives and determines the appearance position of data bit in every message data, then extracts base band
Message data transfers to RS coding module to enter coded treatment, can determine whether out the message of base band message data according to synchronous head type simultaneously
Type；
Synchronize judge module and judge type of message.
System sequence and type of coding control circuit control the data of different type of message and enter corresponding coding path.
When type of message is FIS-B message, use RS(92,72) carry out 6 codings；MUX, Block RAM(block with
Machine memorizer), system sequence and type of coding control circuit complete RS(92,72) coding.
When type of message is not FIS-B message, then this message uses RS (30,18) and RS (48,34) to encode,
Wherein, system sequence and type of coding control circuit, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, also include G(2m) computing
Circuit group completes RS (30,18) encryption algorithm.
Method for transmitting signals based on described aircraft signal transmission system, comprises the following steps:
Satellite navigation information is received by BDS antenna；
By BDS unit, satellite navigation information is obtained positional information and PPS time slot through the process of base band；
By ADS-B interface unit, positional information and PPS time slot are carried out the completeness check that navigates, by the position letter after verification
Breath, PPS time slot send into ADS-B message coding unit；
According to ADS-B message coding rule, positional information is carried out what coding acquisition encoded by ADS-B message coding unit
Message information, and stochastic generation this locality time slot, obtain synchronizing signal by ADS-B message coding unit, work as current synchronizing signal
After arrival, it is judged that local time slot and PPS time slot concordance, when local time slot is consistent with PPS time slot, trigger the message encoded
Information delivers to UAT rf transmitter unit and Big Dipper transmitter unit.
According to ADS-B message coding rule, positional information is carried out coding by ADS-B message coding unit and obtain coding
The detailed process of good message information comprises the following steps:
Synchronizing signal is detected, according to synchronizing letter by synchronizing the original base band sequence of symhols in judge module processing position information
Number judge that synchronizing signal arrives and determines the appearance position of data bit in every message data, then extract base band message
Data transfer to RS coding module to enter coded treatment, can determine whether out the message class of base band message data according to synchronous head type simultaneously
Type；
Use RS coding module to enter when encoding and use RS (30,18), RS (48,34) and three kinds of encryption algorithms of RS (92,72), work as report
Literary composition type is when being FIS-B message, then this message by ((symbol 1, symbol 7, symbol 13, symbol 19 ... symbol 547), (symbol 2,
Symbol 8, symbol 14, symbol 20 ... symbol 548) ... (symbol 6, symbol 12, symbol 18, symbol 24 ... symbol 552)) again
Use RS(92 after combination, 72) carry out 6 coding considerations long to the message of FIS-B, intend here using three encoders together
Time work)；When type of message is not FIS-B message, then this message uses RS (30,18) and RS (48,34) to encode；
Using RS (30,18) to carry out coding is with G(2m) interative computation circuit is in system sequence and type of coding control circuit
BM interative computation, G(2 is completed under effectm) input of interative computation circuit is original base band sequence of symhols, drive at system clock
Under complete each iterative process by beat, and press the original base band sequence of symhols after beat output verification.G(2m) interative computation
Startup and the stopping of circuit are controlled by system sequence and type of coding control circuit, wherein m=8.
The detailed process being obtained synchronizing signal by ADS-B message coding unit is: process position by synchronizing judge module
Original base band sequence of symhols in confidence breath detects synchronizing signal.
In sum, the method have the advantages that and can realize the transmission of full spatial domain in the scope that big-dipper satellite covers,
Therefore the Big Dipper ground command center being used for receiving this message information has only to build one, currently can realize Asia-Pacific region
Non-blind area, the covering in full spatial domain, in future, along with the Global coverage of the Big Dipper, this equipment can realize non-blind area, the whole world and cover, simultaneously
Utilize the coupling of PPS time slot and local random slot to launch message, it is to avoid to launch interference, utilize good message coding simultaneously
Mode realizes RS coding.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of the present invention.
Fig. 2 is the structural representation of RS coding module.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of present invention work, but embodiments of the present invention
It is not limited to this.
Embodiment 1:
As depicted in figs. 1 and 2,
Aircraft signal transmission system, including receive satellite navigation information BDS antenna, the BDS unit being connected with BDS antenna,
The ADS-B interface unit being connected with BDS unit, the ADS-B message coding unit being connected with ADS-B interface unit, report with ADS-B
The UAT rf transmitter unit of literary composition coding unit connection and Big Dipper transmitter unit.
Present invention research based on the Big Dipper airborne ADS-B emitter, the GNSS navigation sources selecting the Big Dipper to be system, its data
Chain support traditional UAT data link and Big Dipper short message communication link double mode, this equipment by the message of ADS-B according to ADS-
B encodes, and transmits on the UAT link of ADS-B simultaneously, is transmitted in Big Dipper short message data link simultaneously, it is achieved
The transmission mechanism that dual link is parallel.The UAT link i.e. UAT rf transmitter unit of ADS-B, the Big Dipper i.e. Big Dipper of short message data link
Transmitter unit.
At airport and terminal area, the ADS-B grounded receiving station on airport can receive this equipment on UAT link according to 1/s
Broadcast ADS-B message, in the air route district of remote location, the region that especially ADS-B earth station cannot cover, this equipment continues will
The short message utilizing the Big Dipper launches ADS-B message with relatively low frequency (1-5 beat/min), receives for Big Dipper ground command center,
Owing to this message is by satellite broadcasting, so this link is not affected by distance, can be real in the scope of big-dipper satellite covering
Now full spatial domain transmission, the Big Dipper ground command center being therefore used for receiving this message information has only to build one, currently may be used
Realizing the non-blind area of Asia-Pacific region, the covering in full spatial domain, in future, along with the Global coverage of the Big Dipper, this equipment can realize the whole world
Non-blind area covers.
Preferably, described BDS unit includes the interface unit A that Base Band Unit A and Base Band Unit A is connected, described ADS-B
Interface unit includes interface unit B, the NIC correction verification module being connected with interface unit B, interface unit A by interface unit B with
NIC correction verification module connects, and NIC correction verification module is connected to ADS-B message coding unit.Base-Band Processing is completed by upper BDS unit,
The verification of location information is completed by ADS-B interface unit.
Beidou antenna receives the positional information from satellite, through Base-Band Processing, by standard time pulse by outside
Positional information is delivered to ADS-B interface unit by fracture and RS232 interface, and (navigation is complete through NIC correction verification module for this positional information
Property verification) will verification after positional information, send into ADS-B message coding unit.
Described ADS-B message coding unit includes the synchronization judge module connected with NIC correction verification module, synchronizes judge module
Connecting and have RS coding module, RS coding module connects CRC24 correction verification module, and CRC24 correction verification module connects buffer storage,
Also include that local slot unit, ADS-B send control module, when ADS-B sends control module connection NIC correction verification module, this locality
Gap unit, buffer storage.
By said structure, for controlling the transmission of location information, select proper emission gap, in order to location information sent out
Giving other equipment, ADS-B message coding unit is to positional information coded treatment, after having encoded, forms the message encoded
Information, the message information now encoded can not be launched, and utilizes the local time slot that local slot unit can produce, and utilization is fixed
The position PPS time slot that carries of information, by ADS-B send judgement this locality time slot of control module consistent with PPS time slot after just will volume
The good message information of code is launched, here it is utilize outside BDS synchronizing signal PPS rising edge to produce transmission time slot.
Described Big Dipper transmitter unit includes radio frequency unit that Base Band Unit B is connected and radio frequency unit with Base Band Unit B even
The BDS antenna connect, also includes that the SIM being connected with Base Band Unit B, Base Band Unit B are connected with buffer storage.Launch single at the Big Dipper
In unit's (Big Dipper short message transmitter unit), message information (ADS-B message) input encoded enters Big Dipper message communication unit,
This message is sent to Big Dipper command centre by the subscriber card of the Big Dipper by satellite link.
Described UAT rf transmitter unit includes the merit that the prevention that CPFSK modulation is connected is connected with prevention with CPFSK modulation
Put the 978MHz antenna being connected with power amplifier, also include modulating, with CPFSK, the mixing being connected, the local oscillator being connected with mixing, CPFSK
Modulation is connected with buffer storage.In UAT rf transmitter unit, the message information (ADS-B message) encoded through local oscillator,
RF broadcast in 978MHZ frequency again after mixing, CPFSK modulation, preposition amplification, promotion, power amplification.
Preferably, the present invention utilizes RS coding module to carry out coded treatment, and described RS coding module includes judging with Tong Bu
Module be connected synchronization judge module receive unit, synchronize judge module receive unit connect have Block RAM, system sequence and
Type of coding control circuit, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, also include G(2m) computing circuit, Parasites Fauna s,
Parasites Fauna w, Parasites Fauna b outfan all and G(2m) computing circuit connection, G(2m) outfan of computing circuit and depositor
Group s, Parasites Fauna w, Parasites Fauna b input connect, also include MUX, Block RAM(block random access memory) output
End, system sequence and the outfan of type of coding control circuit, Parasites Fauna s outfan all with MUX(multiplexer) company
Connecing, MUX is also associated with packet parsing unit, the type of message indication end of system sequence and type of coding control circuit and message solution
Analysis unit connects, Block RAM, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, G(2m) computing circuit is all by system sequence
And the control of type of coding control circuit, described packet parsing unit is connected with CRC24 correction verification module.
Synchronizing signal is detected, according to same by synchronizing the original base band sequence of symhols in judge module processing position information
Step signal judges that synchronizing signal arrives and determines the appearance position of data bit in every message data, then extracts base band
Message data transfers to RS coding module to enter coded treatment, can determine whether out the message of base band message data according to synchronous head type simultaneously
Type；
Synchronize judge module and judge type of message.
System sequence and type of coding control circuit control data corresponding coding path today of different type of message.
When type of message is FIS-B message, use RS(92,72) carry out 6 codings；MUX, Block RAM(block with
Machine memorizer), system sequence and type of coding control circuit complete RS(92,72) coding.
When type of message is not FIS-B message, then this message uses RS (30,18) and RS (48,34) to encode,
Wherein, system sequence and type of coding control circuit, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, also include G(2m) computing
Circuit group completes RS (30,18) encryption algorithm.
As in figure 2 it is shown, RS coding module complete codes co-ordinates, wail coding, ICAO geocoding, type coding,
Penetrate machine type coding, highly coding etc..
Embodiment 2
As depicted in figs. 1 and 2,
Method for transmitting signals based on described aircraft signal transmission system, comprises the following steps:
Satellite navigation information is received by BDS antenna；
By BDS unit, satellite navigation information is obtained positional information and PPS time slot through the process of base band；
By ADS-B interface unit, positional information and PPS time slot are carried out the completeness check that navigates, by the position letter after verification
Breath, PPS time slot send into ADS-B message coding unit；
According to ADS-B message coding rule, positional information is carried out what coding acquisition encoded by ADS-B message coding unit
Message information, and stochastic generation this locality time slot, obtain synchronizing signal by ADS-B message coding unit, work as current synchronizing signal
After arrival, it is judged that local time slot and PPS time slot concordance, when local time slot is consistent with PPS time slot, trigger the message encoded
Information delivers to UAT rf transmitter unit and Big Dipper transmitter unit.
According to ADS-B message coding rule, positional information is carried out coding by ADS-B message coding unit and obtain coding
The detailed process of good message information comprises the following steps:
Synchronizing signal is detected, according to synchronizing letter by synchronizing the original base band sequence of symhols in judge module processing position information
Number judge that synchronizing signal arrives and determines the appearance position of data bit in every message data, then extract base band message
Data transfer to RS coding module to enter coded treatment, can determine whether out the message class of base band message data according to synchronous head type simultaneously
Type；
Use RS coding module to enter when encoding and use RS (30,18), RS (48,34) and three kinds of encryption algorithms of RS (92,72), work as report
Literary composition type is when being FIS-B message, then this message by ((symbol 1, symbol 7, symbol 13, symbol 19 ... symbol 547), (symbol 2,
Symbol 8, symbol 14, symbol 20 ... symbol 548) ... (symbol 6, symbol 12, symbol 18, symbol 24 ... symbol 552)) again
RS(92,72 is used after combination) carry out 6 codings；When type of message is not FIS-B message, then this message use RS (30,
18) encode with RS (48,34)；
Using RS (30,18) to carry out coding is with G(2m) interative computation circuit is in system sequence and type of coding control circuit
BM interative computation, G(2 is completed under effectm) input of interative computation circuit is original base band sequence of symhols, drive at system clock
Under complete each iterative process by beat, and press the original base band sequence of symhols after beat output verification.G(2m) interative computation
Startup and the stopping of circuit are controlled by system sequence and type of coding control circuit, wherein m=8.
The detailed process being obtained synchronizing signal by ADS-B message coding unit is: process position by synchronizing judge module
Original base band sequence of symhols in confidence breath detects synchronizing signal.
The above, be only presently preferred embodiments of the present invention, and the present invention not does any pro forma restriction, every depends on
Any simple modification of being made above example according to the technical spirit of the present invention, equivalent variations, each fall within the protection of the present invention
Within the scope of.
Claims (9)
1. aircraft signal transmission system, it is characterised in that: include the BDS antenna receiving satellite navigation information, with BDS antenna even
The BDS unit connect, the ADS-B interface unit being connected with BDS unit, the ADS-B message coding list being connected with ADS-B interface unit
Unit, the UAT rf transmitter unit being connected with ADS-B message coding unit and Big Dipper transmitter unit.
Aircraft signal transmission system the most according to claim 1, it is characterised in that: described BDS/GPS unit includes base
The interface unit A that tape cell A and Base Band Unit A is connected, described ADS-B interface unit includes interface unit B, with interface unit B
The NIC correction verification module connected, interface unit A is connected by interface unit B and NIC correction verification module, and NIC correction verification module is connected to
ADS-B message coding unit.
Aircraft signal transmission system the most according to claim 2, it is characterised in that: described ADS-B message coding unit
Including the synchronization judge module connected with NIC correction verification module, synchronizing judge module connection has RS coding module, and RS coding module is even
Being connected to CRC24 correction verification module, CRC24 correction verification module connects buffer storage, also includes that local slot unit, ADS-B send
Control module, ADS-B sends control module and connects NIC correction verification module, local slot unit, buffer storage.
Aircraft signal transmission system the most according to claim 3, it is characterised in that: described Big Dipper transmitter unit includes base
The BDS antenna that the radio frequency unit that tape cell B is connected with Base Band Unit B is connected with radio frequency unit, also includes with Base Band Unit B even
The SIM connect, Base Band Unit B are connected with buffer storage.
Aircraft signal transmission system the most according to claim 3, it is characterised in that: described UAT rf transmitter unit bag
Include CPFSK the modulation prevention being connected with CPFSK modulation and the 978MHz antenna preventing the power amplifier being connected to be connected with power amplifier, also
Modulating, including with CPFSK, the mixing being connected, the local oscillator being connected with mixing, CPFSK modulation is connected with buffer storage.
Aircraft signal transmission system the most according to claim 3, it is characterised in that: described RS coding module includes with same
The synchronization judge module that step judge module is connected receives unit, and synchronization judge module reception unit connects Block RAM, system
Sequential and type of coding control circuit, Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, also include G(2m) computing circuit, deposit
Device group s, Parasites Fauna w, Parasites Fauna b outfan all and G(2m) computing circuit connection, G(2m) computing circuit outfan with
Parasites Fauna s, Parasites Fauna w, the input of Parasites Fauna b connect, when also including the outfan of MUX, Block RAM, system
The outfan of sequence and the outfan of type of coding control circuit, Parasites Fauna s is all connected with MUX, and MUX is also associated with packet parsing
Unit, the type of message indication end of system sequence and type of coding control circuit is connected with packet parsing unit, Block RAM,
Parasites Fauna s, Parasites Fauna w, Parasites Fauna b, G(2m) computing circuit all controlled by system sequence and type of coding control circuit
System, described packet parsing unit is connected with CRC24 correction verification module.
7. method for transmitting signals based on the aircraft signal transmission system described in any one in claim 1-6, its feature
It is: comprise the following steps:
Satellite navigation information is received by BDS antenna；
By BDS unit, satellite navigation information is obtained positional information and PPS time slot through the process of base band；
By ADS-B interface unit, positional information and PPS time slot are carried out the completeness check that navigates, by the position letter after verification
Breath, PPS time slot send into ADS-B message coding unit；
According to ADS-B message coding rule, positional information is carried out what coding acquisition encoded by ADS-B message coding unit
Message information, and stochastic generation this locality time slot, obtain synchronizing signal by ADS-B message coding unit, work as current synchronizing signal
After arrival, it is judged that local time slot and PPS time slot concordance, when local time slot is consistent with PPS time slot, trigger the message encoded
Information delivers to UAT rf transmitter unit and Big Dipper transmitter unit.
The method for transmitting signals of aircraft signal transmission system the most according to claim 7, it is characterised in that: pass through ADS-
B message coding unit carries out coding according to ADS-B message coding rule to positional information and obtains the tool of the message information encoded
Body process comprises the following steps:
Synchronizing signal is detected, according to synchronizing letter by synchronizing the original base band sequence of symhols in judge module processing position information
Number judge that synchronizing signal arrives and determines the appearance position of data bit in every message data, then extract base band message
Data transfer to RS coding module to enter coded treatment, can determine whether out the message class of base band message data according to synchronous head type simultaneously
Type；
Use RS coding module to enter when encoding and use RS (30,18), RS (48,34) and three kinds of encryption algorithms of RS (92,72), work as report
Literary composition type is when being FIS-B message, then this message by ((symbol 1, symbol 7, symbol 13, symbol 19 ... symbol 547), (symbol 2,
Symbol 8, symbol 14, symbol 20 ... symbol 548) ... (symbol 6, symbol 12, symbol 18, symbol 24 ... symbol 552)) again
RS(92,72 is used after combination) carry out 6 codings；When type of message is not FIS-B message, then this message use RS (30,
18) encode with RS (48,34)；
Using RS (30,18) to carry out coding is with G(2m) interative computation circuit is at system sequence and the work of type of coding control circuit
BM interative computation, G(2 is completed under withm) input of interative computation circuit is original base band sequence of symhols, under system clock drives
Complete each iterative process by beat, and press the original base band sequence of symhols after beat output verification；
G(2m) interative computation circuit startup and stop controlled by system sequence and type of coding control circuit, wherein m=8.
The method for transmitting signals of aircraft signal transmission system the most according to claim 7, it is characterised in that: pass through ADS-
B message coding unit obtains the detailed process of synchronizing signal: by synchronizing the original base in judge module processing position information
Band sequence of symhols detects synchronizing signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610622976.1A CN106059653B (en) | 2016-08-02 | 2016-08-02 | Aircraft signal transmission system and signal transmission method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610622976.1A CN106059653B (en) | 2016-08-02 | 2016-08-02 | Aircraft signal transmission system and signal transmission method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106059653A true CN106059653A (en) | 2016-10-26 |
| CN106059653B CN106059653B (en) | 2022-03-11 |
Family
ID=57197227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610622976.1A Active CN106059653B (en) | 2016-08-02 | 2016-08-02 | Aircraft signal transmission system and signal transmission method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106059653B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134654A (en) * | 2017-12-25 | 2018-06-08 | 四川九洲空管科技有限责任公司 | A kind of method and device for improving ultra-long data report transmission reliability |
| CN108574565A (en) * | 2018-04-25 | 2018-09-25 | 四川省安道速博科技有限公司 | A kind of S mode transmitter signal quality detection device and method |
| CN109905161A (en) * | 2017-12-08 | 2019-06-18 | 中电科特种飞机***工程有限公司 | A kind of data transmission system, method and the medium of portable ADS-B |
| CN113218250A (en) * | 2021-03-05 | 2021-08-06 | 山东中泰新能源集团有限公司 | Method and facility for protecting safety of air-raid shelter |
| CN116405976A (en) * | 2023-06-06 | 2023-07-07 | 中国民用航空飞行学院 | ADS-B-based data bidirectional communication optimization method and system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040192201A1 (en) * | 1999-03-05 | 2004-09-30 | Inmarsat Limited | Method and apparatus for timing correction in communications systems |
| US20050026621A1 (en) * | 1999-03-05 | 2005-02-03 | Inmarsat Ltd. | Method and apparatus for controlling transmissions in communications systems |
| US20050191964A1 (en) * | 2004-02-26 | 2005-09-01 | Hundal Sukhdeep S. | System and method for enhanced interoperability between a plurality of communication devices |
| CN102621567A (en) * | 2012-03-28 | 2012-08-01 | 上海埃威航空电子有限公司 | Automatic dependent surveillance-broadcast (ADS-B) airborne equipment with beidou function and beidou function starting and stopping method |
| CN104756408A (en) * | 2012-10-18 | 2015-07-01 | 三菱电机株式会社 | Communication terminal, communication method, program, and communication system |
| US20160011318A1 (en) * | 2014-02-26 | 2016-01-14 | Clark Emerson Cohen | Performance and Cost Global Navigation Satellite System Architecture |
| CN205029906U (en) * | 2015-04-28 | 2016-02-10 | 赛尔富电子有限公司 | Control system , lighting system |
| CN105629271A (en) * | 2015-12-28 | 2016-06-01 | 重庆九洲星熠导航设备有限公司 | Beidou dual-mode terminal equipment based on navigation ADS-B application and control method thereof |
-
2016
- 2016-08-02 CN CN201610622976.1A patent/CN106059653B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040192201A1 (en) * | 1999-03-05 | 2004-09-30 | Inmarsat Limited | Method and apparatus for timing correction in communications systems |
| US20050026621A1 (en) * | 1999-03-05 | 2005-02-03 | Inmarsat Ltd. | Method and apparatus for controlling transmissions in communications systems |
| US20050191964A1 (en) * | 2004-02-26 | 2005-09-01 | Hundal Sukhdeep S. | System and method for enhanced interoperability between a plurality of communication devices |
| CN102621567A (en) * | 2012-03-28 | 2012-08-01 | 上海埃威航空电子有限公司 | Automatic dependent surveillance-broadcast (ADS-B) airborne equipment with beidou function and beidou function starting and stopping method |
| CN104756408A (en) * | 2012-10-18 | 2015-07-01 | 三菱电机株式会社 | Communication terminal, communication method, program, and communication system |
| US20160011318A1 (en) * | 2014-02-26 | 2016-01-14 | Clark Emerson Cohen | Performance and Cost Global Navigation Satellite System Architecture |
| CN205029906U (en) * | 2015-04-28 | 2016-02-10 | 赛尔富电子有限公司 | Control system , lighting system |
| CN105629271A (en) * | 2015-12-28 | 2016-06-01 | 重庆九洲星熠导航设备有限公司 | Beidou dual-mode terminal equipment based on navigation ADS-B application and control method thereof |
Non-Patent Citations (5)
| Title |
|---|
| BEN-XIAN LI 等: "Evaluation method for node importance based on node condensation in terrorism networks", 《2012 IEEE INTERNATIONAL CONFERENCE ON INTELLIGENCE AND SECURITY INFORMATICS》 * |
| 张德银 等: "UAT ADS-B信息传输与抗干扰技术研究", 《2013年中国通用航空发展论坛论文集》 * |
| 张鹏 等: "基于BDS/GPS的ADS-B信号源的研究", 《测控技术》 * |
| 林琳 等: "基于测向天线的ADS-B信息校验技术研究", 《微型机与应用》 * |
| 王涛 等: "广播式自动相关监视机载发射组件的设计与实现", 《现代导航》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905161A (en) * | 2017-12-08 | 2019-06-18 | 中电科特种飞机***工程有限公司 | A kind of data transmission system, method and the medium of portable ADS-B |
| CN108134654A (en) * | 2017-12-25 | 2018-06-08 | 四川九洲空管科技有限责任公司 | A kind of method and device for improving ultra-long data report transmission reliability |
| CN108574565A (en) * | 2018-04-25 | 2018-09-25 | 四川省安道速博科技有限公司 | A kind of S mode transmitter signal quality detection device and method |
| CN108574565B (en) * | 2018-04-25 | 2024-05-31 | 四川省安道速博科技有限公司 | Signal quality detection device and method for S-mode transmitter |
| CN113218250A (en) * | 2021-03-05 | 2021-08-06 | 山东中泰新能源集团有限公司 | Method and facility for protecting safety of air-raid shelter |
| CN116405976A (en) * | 2023-06-06 | 2023-07-07 | 中国民用航空飞行学院 | ADS-B-based data bidirectional communication optimization method and system |
| CN116405976B (en) * | 2023-06-06 | 2023-09-22 | 中国民用航空飞行学院 | ADS-B-based data bidirectional communication optimization method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106059653B (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106059653A (en) | Aircraft signal transmission system and signal transmission method thereof | |
| CN102483456B (en) | Secondary surveillance radar system for air traffic control | |
| CN102884440B (en) | For Short baseline, the system and method determining airborne aircraft position at low cost | |
| CN100399043C (en) | Server-assisted position determination in a radio network | |
| CN102695100B (en) | Position interaction talkback terminal based on interphone network and application system thereof | |
| JP2012225915A (en) | Determination of state vector, timing and navigation quality value from reception of ads-b transmission | |
| CN103582121A (en) | Indoor positioning system and method based on virtual Beidou satellite navigation signals | |
| CN104318809A (en) | Portable ADS-B mobile system with 3g function | |
| CN103389504A (en) | Beidou/GPS (global positioning system)/WiFi (wireless fidelity)/Bluetooth emergency position-indicating radio beacon and coordinate transmitting device | |
| DE69032909D1 (en) | GLOBAL SATELLITE COMMUNICATION SYSTEM WITH GEOGRAPHIC PROTOCOL IMPLEMENTATION | |
| CN111263423B (en) | Mobile carrier monitoring terminal and use method thereof | |
| CN103178999B (en) | A kind of ADS-B method of data capture | |
| US9201135B1 (en) | Determination of state vector, timing, and navigation quality metrics from reception of SBS transmissions | |
| CN102065370A (en) | Locating device, system and method | |
| CN106249266A (en) | A kind of personnel location system combined with indoor positioning based on the Big Dipper | |
| AU2001293132A1 (en) | Low-height, low-cost, high-gain antenna and system for mobile platforms | |
| US9049585B1 (en) | Method of providing additional information to emergency services about emergency locator beacons | |
| CN102272623A (en) | Systems and methods of global positioning systems using wireless networks | |
| CN205864424U (en) | Aircraft signal transmission system | |
| Patil et al. | Design and Development of fully automatic AT89C52 based low cost embedded system for rail tracking | |
| JP7166455B2 (en) | A method for determining the position of an aircraft and an arrangement for carrying out the method | |
| DE60002916D1 (en) | SYSTEM FOR DETECTING AIRPLANES AT AIRPORTS | |
| CN202696890U (en) | Position interaction talkback terminal based on interphone network | |
| Syam et al. | Low rf-based navigation for emergencies in difficult environments | |
| US20030066345A1 (en) | A system and method of transmitting position data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |