CN104202080A - 60M radar data transmission device - Google Patents
60M radar data transmission device Download PDFInfo
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- CN104202080A CN104202080A CN201410455079.7A CN201410455079A CN104202080A CN 104202080 A CN104202080 A CN 104202080A CN 201410455079 A CN201410455079 A CN 201410455079A CN 104202080 A CN104202080 A CN 104202080A
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Abstract
The invention relates to a 60M radar data transmission device. The 60M radar data transmission device comprises a first signal interface module which is in both-way communication with a first multiplexing and demultiplexing module, wherein the first multiplexing module is used for multiplexing other data of a radar and demultiplexing a ground control command; the first multiplexing and demultiplexing module is in both-way communication with a first modulating and demodulating module; the first modulating and demodulating module is in both-way communication with a first receiving and transmitting channel machine; the first receiving and transmitting channel machine communicates with a second receiving and transmitting channel machine through an antenna by a wireless manner; the second receiving and transmitting channel machine is in both-way communication with a second modulating and demodulating modle; the second modulating and demodulating module is in both-way communication with a second multiplexing and demultiplexing module, wherein the second multiplexing and demultiplexing module is used for multiplexing the ground control command and demultiplexing the radar data; the second multiplexing and demultiplexing module is in both-way communication with a second signal interface module which is used for receiving the ground control command. According to the 60M radar data transmission device, the maximum transmission rate is up to 61.888Mb/s, the maximum transmission distance is up to 25km, the transmission frequencies of 4.4G and 4.587G are fixed to the receiving and transmitting channel machines, and therefore, no interference is caused, and the transmission performance is stable and reliable.
Description
Technical field
The present invention relates to radar communication technical field, especially a kind of 60M Transmission System of Radar Data equipment.
Background technology
Along with the development of Radar Technology, radar data amount increases gradually, and the telecommunication transmission equipment of high-speed high capacity uses in the urgent need to research and development.The shortcomings such as existing Transmission System of Radar Data equipment exists transmission data rate low in transmitting procedure, and transmission data channel is few, and reservation of network bandwidth is narrow.Therefore, be necessary utilizing on the basis of existing Transmission System of Radar Data equipment, build 60M Transmission System of Radar Data equipment, data transmission equipment transmission data rate is risen to 61.888Mbps by 34.368Mbps data transfer rate, to meet the requirement of radar system transfer of data, require to there is the reliable performance of safety and stability simultaneously, fewer in 60M Transmission System of Radar Data equipment Market.
Summary of the invention
The object of the present invention is to provide a kind of transmission data rate 60M Transmission System of Radar Data equipment high, stable and reliable for performance.
For achieving the above object, the present invention has adopted following technical scheme: a kind of 60M Transmission System of Radar Data equipment, comprise the first signal interface module for receiving radar inquisitor data, its output is connected with the input of the first subdivision connection module for other data of multiple connection radar point ground plane control command, the first subdivision connection module and the first modulation /demodulation module both-way communication, the first modulation /demodulation module and the first transceiver channel machine both-way communication; The first transceiver channel machine and the second transceiver channel machine are by antenna wireless communication, the second transceiver channel machine and the second modulation /demodulation module both-way communication, the second modulation /demodulation module with for the second subdivision connection module both-way communication of multiple connection ground control command tap radar data, the second subdivision connection module with for receiving the secondary signal interface module both-way communication of ground control command; The receipts frequency of the first transceiver channel machine is 4.4GHz, and sending out frequency is 4.587 GHz; The receipts frequency of the second transceiver channel machine is 4.587 GHz, and sending out frequency is 4.4GHz.
Described first signal interface module, the first subdivision connection module, the first modulation /demodulation module and the first transceiver channel machine are arranged on radar; It is indoor that described secondary signal interface module, the second subdivision connection module, the second modulation /demodulation module and the second transceiver channel machine are all positioned at ground control.
Described first signal interface module is made up of the first level shifting circuit and simulation signal generator, the first level shifting circuit, simulation signal generator all with the first subdivision connection module both-way communication; Described secondary signal interface module adopts second electrical level change-over circuit, second electrical level change-over circuit and the second subdivision connection module both-way communication.
Described the first subdivision connection module adopts the first subdivision to connect coding-decoding circuit, the first subdivision connect coding-decoding circuit respectively with first signal interface module, the first modulation /demodulation module both-way communication; Described the second subdivision connection module adopts the second subdivision to connect coding-decoding circuit, the second subdivision connect coding-decoding circuit respectively with secondary signal interface module, the second modulation /demodulation module both-way communication.
Described the first modulation /demodulation module comprises the first data interface circuit, its input is connected with the output of the first subdivision connection module, its output is connected with the input of the first data processing circuit, the output of the first data processing circuit is connected with the input of error correcting code circuitry, the output of error correcting code circuitry is connected with the input of data roll off circuit, the output of data roll off circuit is connected with the input of a QPSK modulation circuit, the output of the one QPSK modulation circuit is connected with the input of the first transceiver channel machine, the output of the first transceiver channel machine is connected with the input of AGC amplifying circuit, the output of AGC amplifying circuit is connected with the input of the 2nd QPSK modulation circuit, the output of the 2nd QPSK modulation circuit is connected with the input that removes error correction circuit, go the output of error correction circuit to be connected with the input of the second data processing circuit, the output of the second data processing circuit is connected with the input of the second data interface circuit, the output of the second data interface circuit is connected with the input of the first subdivision connection module.
Described the first transceiver channel machine comprises duplexer, duplexer and antenna both-way communication, the output of duplexer is connected with the input of low noise amplifier, the output of low noise amplifier is connected with the input of the first filter, the first filter, the output of the first local oscillator unit is all connected with the input of low-converter, the output of low-converter is connected with the input of the first intermediate frequency amplifier, the output of the first intermediate frequency amplifier is connected with the input of the first modulation /demodulation module, the output of the first modulation /demodulation module is connected with the input of the second intermediate frequency amplifier, the second intermediate frequency amplifier, the output of the second local oscillator unit is all connected with the input of upconverter, the output of upconverter is connected with the input of the second filter, the output of the second filter is connected with the input of power amplifier, the output of power amplifier is connected with the input of duplexer.
Described the first transceiver channel machine is by the right-handed circular polarization antenna emitting radio frequency signal earthward on radar, and described the second transceiver channel machine receives this radiofrequency signal by servo antenna.
As shown from the above technical solution, the present invention is by processing of compressing, encode such as radar comprehensive video, original video (test video), bearing signal, video monitoring images, and together with network data and other data, be multiplexed to 61.888Mbps high-speeld code-flow, this code stream is sent into microwave channel as baseband signal, be processed into radiofrequency signal through intermediate frequency Modulation demodulation, the first transceiver channel machine, by right-handed circular polarization antenna transmission on radar to ground; Ground servo antenna received RF signal, through the second transceiver channel machine, intermediate frequency Modulation demodulation, tap recovers radar comprehensive video, original video (test video), bearing signal, video monitoring image, network and other data, and send radar ground based terminal to show, ground control command reaches on radar through data transmission equipment simultaneously.Transmission rate of the present invention reaches as high as 61.888Mb/s, transmission range maximum can reach 25km, and what first and second transceiver channel machine of the present invention used is fixing 4.4G, 4.587G transmission frequency, and this transmission frequency is the peculiar frequency of Transmission System of Radar Data, noiseless, transmission performance is reliable and stable.
Brief description of the drawings
Fig. 1 is system block diagram of the present invention.
Fig. 2,3 is respectively the theory diagram of first signal interface module in Fig. 1, secondary signal interface module.
Fig. 4,5 is respectively the theory diagram of the first subdivision connection module, the second subdivision connection module in Fig. 1.
Fig. 6 is the theory diagram of the first modulation /demodulation module in Fig. 1.
Fig. 7 is the theory diagram of the first transceiver channel machine in Fig. 1.
Embodiment
A kind of 60M Transmission System of Radar Data equipment, comprise the first signal interface module 1 for receiving radar inquisitor data, its output is connected with the input of the first subdivision connection module 2 for other data of multiple connection radar point ground plane control command, the first subdivision connection module 2 and the first modulation /demodulation module 3 both-way communications, the first modulation /demodulation module 3 and the first transceiver channel machine 4 both-way communications; The first transceiver channel machine 4 and the second transceiver channel machine 5 are by antenna wireless communication, the second transceiver channel machine 5 and the second modulation /demodulation module 6 both-way communications, the second modulation /demodulation module 6 and the second subdivision connection module 7 both-way communications for multiple connection ground control command tap radar data, the second subdivision connection module 7 with for receiving secondary signal interface module 8 both-way communications of ground control command; The receipts frequency of the first transceiver channel machine 4 is 4.4GHz, and sending out frequency is 4.587 GHz; The receipts frequency of the second transceiver channel machine 5 is 4.587 GHz, and sending out frequency is 4.4GHz, as shown in Figure 1.What first and second transceiver channel machine 4,5 used is fixing 4.4G, 4.587G transmission frequency, and this transmission frequency is the peculiar frequency of Transmission System of Radar Data, and noiseless, transmission performance is reliable and stable.
As shown in Figure 1, described first signal interface module 1, the first subdivision connection module 2, the first modulation /demodulation module 3 and the first transceiver channel machine 4 are arranged on radar; It is indoor that described secondary signal interface module 8, the second subdivision connection module 7, the second modulation /demodulation module 6 and the second transceiver channel machine 5 are all positioned at ground control.This equipment adopts wireless transmission method, realizes data and the communication of radar, mainly comprises: comprehensive video, original video (test video), triggering, bearing signal (positive north, increment; String code, clock etc.), radar netting, inquisitor data, orientation opening flag, apart from opening flag, radar video monitoring image and talk-back etc., under pass to ground based terminal operating room (or command post), ground based terminal operating room (or command post) processs and displays the data that receive and information; Ground based terminal operating room (or command post) control command is uploaded to radar simultaneously, radar is worked according to the mode of specifying.
As shown in Figure 1, the data such as inquiry data, start-up command after first signal interface module 1 coding, deliver to the first subdivision connection module 2 and be multiplexed to 61.888Mbps high-speeld code-flow together with other data of radar, this code stream is sent into the first modulation /demodulation module 3 as baseband signal, be modulated into the intermediate-freuqncy signal of 140M, intermediate-freuqncy signal is processed into radiofrequency signal through the one the first transceiver channel machines 4, is emitted to ground by communication antenna; Terrestrial receiving antenna received RF signal, through the second transceiver channel machine 5, the second modulation /demodulation module 6, tap recovers radar data, and send radar ground based terminal to show; Radar ground control command reaches on radar through data transmission set simultaneously.Here, radar data comprises interrogating radar data and other data of radar.Transmission rate of the present invention reaches as high as 61.888Mb/s, and transmission range maximum can reach 25km.
As shown in Figure 2,3, described first signal interface module 1 is made up of the first level shifting circuit and simulation signal generator, the first level shifting circuit, simulation signal generator all with the first subdivision connection module 2 both-way communications; Described secondary signal interface module 8 adopts second electrical level change-over circuit, second electrical level change-over circuit and the second subdivision connection module 7 both-way communications.The first level shifting circuit mainly completes level conversion, the transmit data functionality of transmission inquisitor RS422 data, RS232 data, start-up command, platform testing RS422 data, supervisory control system RS422 serial data etc.; Meanwhile, simulation signal generator can produce radar simulation signal, comprises that radar comprehensive video, original video (test video), bearing signal, orientation, broadband opening flag, broadband are apart from opening flag etc., for system debug with while detecting.Second electrical level change-over circuit mainly completes the level conversion function of control command.
As shown in Figure 4,5, described the first subdivision connection module 2 adopts the first subdivision to connect coding-decoding circuit, the first subdivision connect coding-decoding circuit respectively with first signal interface module 1, the first modulation /demodulation module 3 both-way communications; Described the second subdivision connection module 7 adopts the second subdivision to connect coding-decoding circuit, the second subdivision connect coding-decoding circuit respectively with secondary signal interface module 8, the second modulation /demodulation module 6 both-way communications.The first subdivision connection module 2 is mainly each data flow that external equipment is sent here, original video, comprehensive video, test video, triggering signal, bearing signal, orientation opening flag, encode and process apart from opening flag etc. after, with the information such as the video network data of web camera output (or monitoring image plug-in unit send here video monitoring information), grid data, inquisitor data, carrying out multiple connection, to be processed into transmission rate be that the baseband signal of 61.888Mb/s is sent modulation /demodulation; The second subdivision connection module 7 the baseband signal of demodulation 61.888Mb/s out recover successively radar original video, comprehensive video, test video, triggering signal, bearing signal, orientation opening flag, apart from opening flag, inquisitor data etc., deliver to outside relevant device.
As shown in Figure 6, described the first modulation /demodulation module 3 comprises the first data interface circuit, its input is connected with the output of the first subdivision connection module 2, its output is connected with the input of the first data processing circuit, the output of the first data processing circuit is connected with the input of error correcting code circuitry, the output of error correcting code circuitry is connected with the input of data roll off circuit, the output of data roll off circuit is connected with the input of a QPSK modulation circuit, the output of the one QPSK modulation circuit is connected with the input of the first transceiver channel machine 4, the output of the first transceiver channel machine 4 is connected with the input of AGC amplifying circuit, the output of AGC amplifying circuit is connected with the input of the 2nd QPSK modulation circuit, the output of the 2nd QPSK modulation circuit is connected with the input that removes error correction circuit, go the output of error correction circuit to be connected with the input of the second data processing circuit, the output of the second data processing circuit is connected with the input of the second data interface circuit, the output of the second data interface circuit is connected with the input of the first subdivision connection module 2.
The effect of the first modulation /demodulation module 3 is mainly divided into two parts of modulation and demodulation: the Main Function of modulating part is that the 61.888Mbps baseband signal that the first subdivision connection module 2 is sent here is carried out data-interface conversion, data after having converted are after the first data processing circuit is processed, the data of finishing dealing with are added to error correction coding, data after coding are carried out data and are roll-offed, the string code that reduces intersymbol with this disturbs, data after roll-offing are modulated through QPSK, be modulated in the intercarrier signal of 140MHz, the first transceiver channel machine 4 of finally giving carries out next step modulation, the Main Function of demodulation part is that the 140MHz intermediate-freuqncy signal that the first transceiver channel machine 4 that receives is sent here is carried out demodulation, first the data that receive are carried out AGC amplification, after demodulate base band data through QPSK, error correction coding is taken out, then after data processing is given data-interface conversion, demodulate 61.888 Mbps baseband signals and send the first subdivision connection module 2.The structure of the second modulation /demodulation module 6 is identical with the structure of the first modulation /demodulation module 3.
As shown in Figure 7, described the first transceiver channel machine 4 comprises duplexer, duplexer and antenna both-way communication, the output of duplexer is connected with the input of low noise amplifier, the output of low noise amplifier is connected with the input of the first filter, the first filter, the output of the first local oscillator unit is all connected with the input of low-converter, the output of low-converter is connected with the input of the first intermediate frequency amplifier, the output of the first intermediate frequency amplifier is connected with the input of the first modulation /demodulation module 3, the output of the first modulation /demodulation module 3 is connected with the input of the second intermediate frequency amplifier, the second intermediate frequency amplifier, the output of the second local oscillator unit is all connected with the input of upconverter, the output of upconverter is connected with the input of the second filter, the output of the second filter is connected with the input of power amplifier, the output of power amplifier is connected with the input of duplexer.Described the first transceiver channel machine 4 is by the right-handed circular polarization antenna emitting radio frequency signal earthward on radar, and described the second transceiver channel machine 5 receives this radiofrequency signal by servo antenna.The Main Function of the first transceiver channel machine 4 is that the 140MHz intermediate-freuqncy signal that the first modulation /demodulation module 3 is sent here is carried out rf modulations and power amplification etc., and delivers to antenna-feedback system and launch; The radiofrequency signal receiving is carried out, after the processing such as low noise amplification, demodulation, obtaining 140MHz intermediate-freuqncy signal and sending modulation /demodulation simultaneously.In transmitting portion: the 140MHz intercarrier signal with baseband signal of first the first modulation /demodulation module 3 being sent here is carried out intermediate-freuqncy signal amplification, then pass through local local oscillation signal by intermediate-freuqncy signal up-conversion to the carrier signal of 4.4G, then take out useful signal through the second filter, after power amplifier amplifies, pass to duplexer and pass to antenna and be sent to opposite end; At receiving unit: antenna is receiving after the carrier signal of the 4.5G sending opposite end, through low noise amplifier, signal is amplified, give the first filter and take out useful signal, then pass through down conversion module by signal frequency conversion the intermediate-freuqncy signal to 140MHz, then after intermediate frequency amplifies, deliver to the first modulation /demodulation module 3 and carry out next step demodulation.The structure of the first transceiver channel machine 4 is identical with the structure of the second transceiver channel machine 5.
In sum, the present invention is by processing of compressing, encode such as radar comprehensive video, original video (test video), bearing signal, video monitoring images, and together with network data and other data, be multiplexed to 61.888Mbps high-speeld code-flow, this code stream is sent into microwave channel as baseband signal, be processed into radiofrequency signal through intermediate frequency Modulation demodulation, the first transceiver channel machine 4, by right-handed circular polarization antenna transmission on radar to ground; Ground servo antenna received RF signal, through the second transceiver channel machine 5, intermediate frequency Modulation demodulation, tap recovers radar comprehensive video, original video (test video), bearing signal, video monitoring image, network and other data, and send radar ground based terminal to show, ground control command reaches on radar through data transmission equipment simultaneously.Transmission rate of the present invention reaches as high as 61.888Mb/s, and transmission range maximum can reach 25km, has that message transmission rate is high, long transmission distance, transmission performance are stable, the variation of transmission data channel, feature that environmental suitability is strong.
Claims (7)
1. a 60M Transmission System of Radar Data equipment, it is characterized in that: comprise the first signal interface module (1) for receiving radar inquisitor data, its output is connected with the input of the first subdivision connection module (2) for other data of multiple connection radar point ground plane control command, the first subdivision connection module (2) and the first modulation /demodulation module (3) both-way communication, the first modulation /demodulation module (3) and the first transceiver channel machine (4) both-way communication; The first transceiver channel machine (4) passes through antenna wireless communication with the second transceiver channel machine (5), the second transceiver channel machine (5) and the second modulation /demodulation module (6) both-way communication, the second modulation /demodulation module (6) with for the second subdivision connection module (7) both-way communication of multiple connection ground control command tap radar data, the second subdivision connection module (7) with for receiving secondary signal interface module (8) both-way communication of ground control command; The receipts frequency of the first transceiver channel machine (4) is 4.4GHz, and sending out frequency is 4.587 GHz; The receipts frequency of the second transceiver channel machine (5) is 4.587 GHz, and sending out frequency is 4.4GHz.
2. a kind of 60M Transmission System of Radar Data equipment according to claim 1, is characterized in that: described first signal interface module (1), the first subdivision connection module (2), the first modulation /demodulation module (3) and the first transceiver channel machine (4) are arranged on radar; It is indoor that described secondary signal interface module (8), the second subdivision connection module (7), the second modulation /demodulation module (6) and the second transceiver channel machine (5) are all positioned at ground control.
3. a kind of 60M Transmission System of Radar Data equipment according to claim 1, it is characterized in that: described first signal interface module (1) is made up of the first level shifting circuit and simulation signal generator, the first level shifting circuit, simulation signal generator all with the first subdivision connection module (2) both-way communication; Described secondary signal interface module (8) adopts second electrical level change-over circuit, second electrical level change-over circuit and the second subdivision connection module (7) both-way communication.
4. a kind of 60M Transmission System of Radar Data equipment according to claim 1, it is characterized in that: described first subdivision connection module (2) adopt the first subdivision connect coding-decoding circuit, the first subdivision connect coding-decoding circuit respectively with first signal interface module (1), the first modulation /demodulation module (3) both-way communication; Described second subdivision connection module (7) adopt the second subdivision connect coding-decoding circuit, the second subdivision connect coding-decoding circuit respectively with secondary signal interface module (8), the second modulation /demodulation module (6) both-way communication.
5. a kind of 60M Transmission System of Radar Data equipment according to claim 1, it is characterized in that: described the first modulation /demodulation module (3) comprises the first data interface circuit, its input is connected with the output of the first subdivision connection module (2), its output is connected with the input of the first data processing circuit, the output of the first data processing circuit is connected with the input of error correcting code circuitry, the output of error correcting code circuitry is connected with the input of data roll off circuit, the output of data roll off circuit is connected with the input of a QPSK modulation circuit, the output of the one QPSK modulation circuit is connected with the input of the first transceiver channel machine (4), the output of the first transceiver channel machine (4) is connected with the input of AGC amplifying circuit, the output of AGC amplifying circuit is connected with the input of the 2nd QPSK modulation circuit, the output of the 2nd QPSK modulation circuit is connected with the input that removes error correction circuit, go the output of error correction circuit to be connected with the input of the second data processing circuit, the output of the second data processing circuit is connected with the input of the second data interface circuit, the output of the second data interface circuit is connected with the input of the first subdivision connection module (2).
6. a kind of 60M Transmission System of Radar Data equipment according to claim 1, it is characterized in that: described the first transceiver channel machine (4) comprises duplexer, duplexer and antenna both-way communication, the output of duplexer is connected with the input of low noise amplifier, the output of low noise amplifier is connected with the input of the first filter, the first filter, the output of the first local oscillator unit is all connected with the input of low-converter, the output of low-converter is connected with the input of the first intermediate frequency amplifier, the output of the first intermediate frequency amplifier is connected with the input of the first modulation /demodulation module (3), the output of the first modulation /demodulation module (3) is connected with the input of the second intermediate frequency amplifier, the second intermediate frequency amplifier, the output of the second local oscillator unit is all connected with the input of upconverter, the output of upconverter is connected with the input of the second filter, the output of the second filter is connected with the input of power amplifier, the output of power amplifier is connected with the input of duplexer.
7. a kind of 60M Transmission System of Radar Data equipment according to claim 1, it is characterized in that: described the first transceiver channel machine (4) is by the right-handed circular polarization antenna emitting radio frequency signal earthward on radar, and described the second transceiver channel machine (5) receives this radiofrequency signal by servo antenna.
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| CN201410455079.7A CN104202080A (en) | 2014-09-09 | 2014-09-09 | 60M radar data transmission device |
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| CN201410455079.7A CN104202080A (en) | 2014-09-09 | 2014-09-09 | 60M radar data transmission device |
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