CN103701488B - There is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts - Google Patents
There is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts Download PDFInfo
- Publication number
- CN103701488B CN103701488B CN201310711878.1A CN201310711878A CN103701488B CN 103701488 B CN103701488 B CN 103701488B CN 201310711878 A CN201310711878 A CN 201310711878A CN 103701488 B CN103701488 B CN 103701488B
- Authority
- CN
- China
- Prior art keywords
- signal
- processing module
- 1090mhz
- mode
- data processing
- 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.)
- Active
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Transmitters (AREA)
Abstract
The S mode answering machine of Automatic dependent surveillance broadcast ability that the present invention has 1090 megahertzes expansion texts comprises antenna, receives 1030 and 1090MHz signal and send 1090MHz signal; Receiver module, carries out amplitude limit, impurity elimination ripple and amplification to signal; Radio frequency sampling module, samples to signal; Signal processing module, identifies signal and decodes, and to identify the A/C/S request signal or 1090ESADS-BIN signal that signal is 1030MHz, and decoded signal is sent to data processing module; Data processing module, processes this decoded signal; Signal processing module, also to data processing module send answer signal encode and/or according to data processing module send data and initiatively generate 1090ESADS-BOUT code signal according to 1090ESADS-BOUT sequential; Transmitter module, launches signal.
Description
Technical field
The present invention relates to air traffic control and air traffic safety monitors field, particularly relate to a kind of S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertzes expansion texts.
Background technology
S mode answering machine can tie surface secondary radar or airborne TCAS system works, the original ATCRBS of usual compatibility (ATCRBS) A/C pattern answering machine function (being usually called for short ATC answering machine), also possesses Discrete Address Beacon System (DABS simultaneously, be called for short S mode) S mode answering machine function, and coordinate airborne TCAS system to realize absolutely empty coordination collision avoidance.S mode answering machine receives 1030MHz request signal, and launch 1090MHz answer signal, answer signal has A pattern, C mode and S mode etc. respectively according to interrogation mode difference.
1090ESADS-B be utilize Air-Ground, air-air ,-ground data communication completes the new navigation technology of one that traffic monitoring and information are transmitted.The Data-Link that our times various countries mainly adopt has 1090MHzS mode expansion telegraph text data chain (1090ES), general-purpose accessing radio station Data-Link (UAT) and very-high-frequency PECVD pattern 4(VDLMode4) etc. three kinds, wherein 1090ES is the interoperable ADS-B Ground-to-Air Data Link in the whole world of International Civil Aviation Organization (ICAO) recommendation.The information such as the position that during airborne equipment work, real-time reception flight intent and navigation system export, use 1090MHz tranmitting frequency by the machine static information (as identification code, catchword, communication capacity etc.) and multidate information (as air position, scene position, highly, flight trend etc.) be encoded into DF17 or DF18 message periodic broadcasting and go out, inform aircraft and the ground surveillance equipment of closing on; Simultaneously, the machine also to receive in spatial domain by 1090ESADS-BIN function or other platform broadcast 1090ESADS-BOUT data on ground, ground and aerial aircraft all can be seen by such aircraft and ground station, obtain in the air with traffic above-ground situation and the information relevant to flight safety thereof.ADS-B has been defined as the Main way of following surveillance technology development by ICAO, actively pushing forward this technology, some countries have dropped into practical S mode answering machine and ADS-B surveillance equipment, on the one hand as the important sensing equipment of airborne aerial Situation Awareness, be also the important situation awareness information source of surface surveillance system on the other hand.
Current industry uses Sampling techniques to be comparatively widely base band video sampling and IF bandpass sampling, analog frequency mixing circuit is added at radio-frequency front-end, radiofrequency signal is become the intermediate-freuqncy signal that bandwidth is moderate, again by logarithmic amplification process, detection goes out vision signal or direct intermediate frequency (IF) Sampling process, the program alleviates the work load of A/D chip, also has ripe case can be for reference in design.Radio frequency Direct Sampling structure is very close to software radio ideal standard, sample frequency is higher, performance is also better, on the basis of labor signal receiving module of the present invention and radio frequency sampling functions of modules and composition, in conjunction with current device level, use full digital power supply model can realize the L-band radiofrequency signal Direct Sampling that highest frequency is 2GHz.Existing part S mode answering machine possesses 1090ESADS-BOUT function at present, and 1090ESADS-BIN function is realized by TCAS receiving circuit usually or realized by independent 1090ESADS-BIN equipment, also not by equipment that S mode answering machine, 1090ESADS-BOUT and 1090ESADS-BIN all functions integrate.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts, can have function and 1090ESADS-BOUT and the 1090ESADS-BIN all functions of traditional A/C/S interrogation mode simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts, it has answering to A/C/S mode query and 1090ESADS-B function, comprise: antenna, for receiving 1030MHz and 1090MHz signal and sending 1090MHz signal; Receiver module, is connected with antenna, for 1030MHz and the 1090MHz signal received being carried out amplitude limit, impurity elimination ripple and amplification by antenna; Radio frequency sampling module, is connected with receiver module, for sampling to the signal after receiver module processes and being converted to digital signal; Signal processing module, with radio frequency sampling model calling, for identifying the signal after radio frequency sampling module samples and decoding, to identify the A/C/S request signal or 1090ESADS-BIN signal that the signal received is 1030MHz, and decoded signal is sent to data processing module; Described data processing module, be connected with signal processing module and connect with the external equipment in aircraft, for receiving through decoded signal and processing this decoded signal, wherein, the decoded signal received when data processing module is the A/C/S request signal of 1030MHz, then send the answer signal relevant to this A/C/S request signal to signal processing module; When the signal received is 1090ESADS-BIN signal, this signal is sent to external equipment to show this signal; Described signal processing module, the relevant answer signal also for sending data processing module is encoded and/or the data that send according to data processing module and initiatively generate 1090ESADS-BOUT code signal according to 1090ESADS-BOUT sequential; And transmitter module, for launching the signal after signal processing module coding.
Wherein, described antenna comprises heaven line and lower antenna.
Wherein, described receiver module comprises: be connected with antenna low pass filter, receipts/the send out switch be connected with low pass filter, with receive/the switch amplitude limiter, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter and the low noise amplifier be connected with 1030-1090MHz band pass filter that are connected, or be connected with antenna low pass filter, the circulator be connected with antenna, receipts/the send out switch be connected with circulator, with receive/the switch amplitude limiter, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter, the low noise amplifier that is connected with 1030-1090MHz band pass filter that are connected, or be connected low pass filter with antenna, the receipts be connected with low pass filter/send out switch, the amplitude limiter be connected with a receipts/switch, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter and the low noise amplifier be connected with 1030-1090MHz band pass filter, the power splitter be connected with low noise amplifier, the 1030MHz analog filter be connected with power splitter and 1090MHz analog filter, the 1030 signal low noise amplifiers be connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090 signal low noise amplifiers, or be connected low pass filter with antenna, circulator is connected with low pass filter, the receipts be connected with circulator/send out switch, the amplitude limiter be connected with a receipts/switch, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter and the low noise amplifier be connected with 1030-1090MHz band pass filter, the power splitter be connected with low noise amplifier, the 1030MHz analog filter be connected with power splitter and 1090MHz analog filter, the 1030 signal low noise amplifiers be connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090 signal low noise amplifiers.
Wherein, described signal processing module comprises: the digital quadrature transformation device group unit, be connected with described the digital quadrature transformation device group unit and pretreated video pre-processing units is carried out to signal, be connected with described video pre-processing units and the A/C/S mode query signal decoding unit that 1030MHz signal is decoded and the 1090ES-ADS-BIN signal decoding unit that 1090MHz signal is decoded, the S mode be connected with described A/C/S mode query signal decoding unit replys PPM/PCM coding unit, the 1090ESADS-BOUT code signal coding unit be connected with data processing module, wherein, described A/C/S mode signal inquiry decoding unit is also connected with data processing module with 1090ES-ADS-BIN signal decoding unit, process for decoded signal is sent to data processing module, described S mode response PPM/PCM coding unit is connected with data processing module, for the answer signal corresponding to request signal sent according to data processing module, described 1090ESADS-BOUT coding unit is connected with data processing module, the 1090ESADS-BOUT sequential initiatively sent according to data module and information are encoded, or the digital quadrature transformation device group unit, the video pre-processing units be connected with described the digital quadrature transformation device group unit, the A/C/S mode query signal decoding unit be connected with described video pre-processing units and 1090ES-ADS-BIN signal decoding unit, the S mode be connected with described A/C/S mode query signal decoding unit replys PPM/PCM coding unit, the 1090ESADS-BOUT code signal coding unit be connected with data processing module, the DA chip data dispensing unit that PPM/PCM coding unit and 1090ESADS-BOUT code signal coding unit be connected is replied with S mode, described A/C/S mode signal inquiry decoding unit is also connected with data processing module with 1090ES-ADS-BIN signal decoding unit, process for decoded signal is sent to data processing module, described S mode response PPM/PCM coding unit is also connected with data processing module, for the answer signal corresponding to request signal sent according to data processing module, described 1090ESADS-BOUT code signal coding unit is also connected with data processing module, encode for the 1090ESADS-BOUT sequential that initiatively sends according to data processing module and information, wherein, described the digital quadrature transformation device group unit is to two-way 1030MHz numerical sequence signal X
1(n), X
2(n) and two-way 1090MHz numerical sequence signal X
3(n), X
4n () carries out orthogonal transform process, then result is sent into video pre-processing units, or in internal build multichannel 1030MHz and 1090MHz digital filter bank, to extract 1030MHz request signal Serial No. X respectively
1(n), X
2(n) and 1090ESADS-BIN signal digital sequence X
3(n), X
4(n), then build the digital quadrature transformation device group orthogonal transform process is carried out to described numerical sequence signal, then result is sent into video pre-processing units.
Wherein, described video pre-processing units comprises: signal characteristic abstraction unit, for carrying out pulse characteristics extraction to the signal after quadrature transformer group cell processing; Up/down antenna selected cell, for being 1030MHz signal when the signal that receive, then receiving two paths of signals amplitude by up/down antenna or the time of advent compares, exporting a road antenna selection signals and a road ASK envelope demodulation signal; ASK envelope demodulation unit, is connected with described signal characteristic abstraction unit and up/down antenna selected cell, and the road signal sent for receiving upper and lower antenna selected cell carries out demodulation; 1090MHz signal also for sending signal characteristic abstraction unit carries out demodulation.
Wherein, described A/C/S mode query signal decoding unit is also connected with described data processing module, for decoded request signal is sent to data processing module; Described decoding unit comprises: signal mode judgement unit, for differentiating that to the signal after ASK envelope demodulation described 1030MHZ signal is S mode request signal or A/C mode query signal; If 1030MHZ signal is S mode request signal, then by the P of this S mode request signal
6pulse and each enable signal sequential are adjusted together and are carried out decoding and message analysis process, the wherein P of S mode request signal
6pulse adopts DPSK modulation system, and processing procedure is first for P
6the message signals of pulse carries out DPSK demodulation, and the 24 bit address information wherein comprised are carried out CRC check, if it is consistent with the machine address to obtain this address through inspection, notice S mode response PPM/PCM coding unit carries out coding response; If 1030MHz signal is A/C signal, then notify that S mode promises that PPM/PCM coding unit carries out coding response.
Wherein, described S mode response PPM/PCM coding unit is also connected with data processing module, the answer signal relevant to request signal for sending according to data processing module is encoded, S mode response PPM/PCM coding unit comprises PPM coding unit and pcm encoder unit, and described PPM coding unit is used for carrying out encoding the response to S mode request signal; Described pcm encoder unit is used for carrying out encoding the response to A/C mode query signal.
Wherein, described transmitter module comprises: the high-speed d/a transducer of band DDS function, the pre-amplifier be connected with high-speed d/a transducer, the 1090MHz analog filter be connected with described pre-amplifier, the power amplifier be connected with described analog filter and antenna selection switch, the I/Q orthogonal signalling that described D/A converter Received signal strength processing module produces, D/A chip configuration data-signal and reference clock signal, 1090MHz radiofrequency signal with specified signal is produced through pre-amplifier according to described signal, 1090MHz filter, antenna is sent to after power amplifier process, to carry out answer signal or the transmission to the 1090ESADS-BOUT code signal that data processing module initiatively generates, or modulator, the pre-amplifier be connected with modulator, the 1090MHz analog filter be connected with pre-amplifier, the power amplifier be connected with analog filter and antenna selection switch, the PPM that described modulator exports according to signal processing module or pcm encoder answer signal and modulation select signal to modulate the 1090MHZ carrier signal that frequency source provides, the radiofrequency signal with provisioning information after modulation is sent into pre-amplifier, 1090MHz filter, antenna is sent to after power amplifier process, to carry out the transmission of answer signal or the transmission to the 1090ESADS-BOUT code signal that data processing module initiatively generates, described antenna selection switch sends answer signal or 1090ESADS-BOUT code signal for selecting upper antenna or lower antenna.
Wherein, described antenna adopts omnidirectional antenna.
The invention has the beneficial effects as follows: the situation being different from prior art, the S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts of the present invention, has following beneficial effect:
One, standard S mode answering machine and 1090ESADS-B two function i ntegration are integrated by the present invention, and an equipment achieves two functions, compact conformation, information category is many, contain much information, and integrated level is high, and the equipment that reduces installs complexity, simplify platform master-plan, save cost;
Two, radiofrequency signal is not transformed into intermediate-freuqncy signal by Analogue mixer by receiver module of the present invention, but Direct Sampling radiofrequency signal, in FPGA, build digital quadrature device group replace low-converter; Intermediate-freuqncy signal is not transformed into radiofrequency signal by Analogue mixer by transmitter module simultaneously, but by directly exporting radiofrequency signal with the DA chip of DDS function or modulator, due to without the need to using up/down frequency converter and interlock circuit, radio circuit is simple, digitized degree is high, reduce equipment power dissipation and weight, substantially increase reliability;
Three, the present invention's two functions share aircraft up/down two slave antenna (Small General Aircraft also can install common antenna), and compared with equipped standalone feature equipment, required antenna amount reduces by half, and reduces the design difficulty of airframe antenna layout, facilitates the maintenance of antenna;
Four, the present invention according to the different demands of application platform, can carry out antenna amount and circuit structure cutting, to meet the requirement of the different application platforms such as airborne, ground; By upgrading the continuous expansion of data processing software and upgrading, different ADS-B can be adapted to and apply; Also can adjust local circuit, expand the functions such as same frequency range such as UATADS-B, DME, expand range of application of the present invention further.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the block diagram that the present invention has S mode answering machine first embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 2 is the block diagram that the present invention has S mode answering machine second embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 3 is the block diagram that the present invention has S mode answering machine the 3rd embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 4 is the block diagram that the present invention has S mode answering machine the 4th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 5 is the block diagram that the present invention has S mode answering machine the 5th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 6 is the block diagram that the present invention has S mode answering machine the 6th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 7 is the block diagram that the present invention has signal processing module in the S mode answering machine first, second, third of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansion texts and the 4th embodiment;
Fig. 8 is the block diagram that the present invention has signal processing module in S mode answering machine the 5th and the 6th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 9 is the block diagram that the present invention has S mode answering machine transmitter module first embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Figure 10 is the block diagram that the present invention has S mode answering machine transmitter module second embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Figure 11 is the S mode answering machine transmitter module radio frequency sampling of Automatic dependent surveillance broadcast ability and the block diagram of the digital quadrature transformation device that the present invention has 1090 megahertz expansion texts.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
About term:
Before being described embodiments of the invention, need to carry out necessary explanation explanation to some terms.
Such as: if occur herein, the term such as " first ", " second " describes various element, but these elements should not limited by these terms.These terms are only used for differentiation element and another element.Therefore, hereafter discussed " first " element also can be called as " second " element and not depart from instruction of the present invention.Should be understood that, when mentioning an element " connection " or " connection " to another element, it can directly connect or directly be connected to another element or also can there is intermediary element.On the contrary, when mentioning that an element " directly connection " or " directly connecting " are to another element, then there is not intermediary element.
Be understandable that, the term used in this article is only not intended to as limitation of the invention for describing the object of concrete execution mode.As " antenna " that hereafter use, unless context is clearly pointed out in addition, then singulative intention also comprises plural form.
It is further understood that, " comprise " when using term in this manual and/or " including " time, these terms specify the existence of described feature, entirety, step, operation, element and/or parts, but also do not get rid of more than one other features, entirety, step, operation, element, the existence of parts and/or its group and/or additional.
About execution mode:
A kind of S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts of the present invention, it has answering to A/C/S mode query and 1090ESADS-B function, specifically comprise with lower module: antenna, for receiving 1030MHz and 1090MHz signal and sending 1090MHz signal; Receiver module, is connected with antenna, for 1030MHz and the 1090MHz signal received being carried out amplitude limit, impurity elimination ripple and amplification by antenna; Radio frequency sampling module, is connected with receiver module, for sampling to the signal after receiver module processes and being converted to digital signal; Signal processing module, with radio frequency sampling model calling, for identifying the signal after radio frequency sampling module samples and decoding, to identify the A/C/S request signal or 1090ESADS-BIN signal that the signal received is 1030MHz, and decoded signal is sent to data processing module; Described data processing module, be connected with signal processing module and connect with the external equipment in aircraft, for receiving through decoded signal and processing this decoded signal, wherein, the decoded signal received when data processing module is the A/C/S request signal of 1030MHz, then send the answer signal relevant to this A/C/S request signal to signal processing module; When the signal received is 1090ESADS-BIN signal, this signal is sent to external equipment to show this signal; Described signal processing module, the relevant answer signal also for sending data processing module is encoded and/or the data that send according to data processing module and initiatively generate 1090ESADS-BOUT code signal according to 1090ESADS-BOUT sequential; And transmitter module, for launching the signal after signal processing module coding.In addition, inventive antenna implementation adopts omnidirectional antenna a period of time.
Particularly, refer to Fig. 1, Fig. 1 is the block diagram that the present invention has S mode answering machine first embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The S mode answering machine of Automatic dependent surveillance broadcast ability with 1090 megahertzes expansion texts of the present embodiment comprises radio frequency sampling module 13 that antenna 10 and upper antenna 11, the receiver module 12 be connected with upper antenna 10 and upper antenna 11 and receiver module 12 connect and the signal processing module 14 that radio frequency sampling module 13 connects and the data processing module 15 be connected with signal processing module 14 and transmitter module 16, and described data processing module 15 is connected with external equipment by communication interface.Wherein:
Described upper antenna 10 and upper antenna 11, for receiving 1030MHz and 1090MHz signal and sending 1090MHz signal;
Described receiver module 12 is two-way receive path, namely the first low pass filter 121 be connected with upper antenna 10 is comprised, be connected with the first low pass filter 121 first receives/sends out switch 122, receive/send out the first amplitude limiter 123 that switch 122 is connected with first, the 1030-1090MHz bandpass analog filter 124 be connected with the first amplitude limiter 123, the first low noise amplifier 130 is connected with a 1030-1090MHz bandpass analog filter 124, the first power splitter 125 be connected with described first low noise amplifier 130, the 1030MHz analog filter 126 be connected with the first power splitter 125 and a 1090MHz analog filtering 127, the 1030MHz low noise amplifier 128 be connected with a 1030MHz analog filter 126 and a 1090MHz analog filtering 127 respectively and a 1090MHz low noise amplifier 129, and
The second low pass filter 121 ＇ be connected with upper antenna 11, be connected with the second low pass filter 121 ＇ second receives/sends out switch 122 ＇, receive/send out the second amplitude limiter 123 ＇ that switch 122 ＇ is connected with second, the 2nd 1030-1090MHz bandpass analog filter 124 ＇ be connected with the second amplitude limiter 123 ＇, the second low noise amplifier 130 ＇ be connected with the 2nd 1030-1090MHz bandpass analog filter 124 ＇, the second power splitter 125 ＇ be connected with described second low noise amplifier 130 ＇, the 2nd 1030MHz analog filter 126 ＇ be connected with the second power splitter 125 ＇ and the 2nd 1090MHz analog filter 127 ＇, the 2nd 1030MHz low noise amplifier 128 ＇ be connected with the 2nd 1030MHz analog filter 126 ＇ and the 2nd 1090MHz analog filter 127 ＇ respectively and the 2nd 1090MHz low noise amplifier 129 ＇.
Wherein, low pass filter 121,121 ＇ is used for carrying out filtering to the received signal, allows the signal lower than predeterminated frequency to pass through; Receive/send out switch 122,122 ＇, for reception and the sending function of switched antenna; Amplitude limiter 123,123 ＇ is used for amplitude output signal to be limited within the scope of 1030MHz and 1090MHz; 1030-1090MHz bandpass analog filter 124,124 ＇ is for allowing the signal of 1030-1090MHz frequency band by shielding other frequency band signals simultaneously; Described low noise amplifier 130,130 ＇ is used for signal to amplify; Described power splitter 125,125 ＇ is used for signal to be divided into two-way; Described 1030MHz analog filter 126,126 ＇ and 1090MHz analog filter 127,127 ＇ is respectively used to the clutter eliminating 1030MHz and 1090MHz signal; Described 1030MHz low noise amplifier 128,128 ＇ and 1090MHz low noise amplifier 129,129 ＇ is respectively used to amplify 1030MHz and 1090MHz signal.
1030MHz/ or the 1090MHz signal received by upper and lower antenna is after low pass filter, amplitude limiter, bandpass analog filter process, subchannel process is carried out by power splitter, if 1030MHz signal is then carried out filtering by 1030MHz analog filter, amplified by 1030MHz low noise amplifier, be then sent to radio frequency sampling module 13; If 1090MHz signal is then carried out filtering by 1090MHz analog filter, amplified by 1090MHz low noise amplifier, be then sent to radio frequency sampling module 13; The signal that radio frequency sampling module 13 receives gathers.
Described radio frequency sampling module 13 comprises 4 A/D converters 131, for receiving the signal after a road any in four tunnels or several roads low noise amplifier are amplified, and gathers this signal and carries out analog/digital conversion.
Described signal processing module 14, for identifying the signal after radio frequency sampling module 13 is sampled and decode, to identify the A/C/S request signal or 1090ESADS-BIN signal that the signal received is 1030MHz, and decoded signal is sent to data processing module 15.
Data processing module 15, for receiving through decoded data and processing this decoded signal.Wherein, when the decoded signal that data processing module 15 receives is the A/C/S request signal of 1030MHz, then send the answer signal relevant to this A/C/S request signal to signal processing module 14; When the signal received is 1090ESADS-BIN signal, then send it to external equipment to show this signal.
Described signal processing module 14, the relevant answer signal also for sending data processing module 15 is encoded and/or the data that send according to data processing module 15 and initiatively generate 1090ESADS-BOUT code signal according to 1090ESADS-BOUT sequential;
Transmitter module 16, launches for the signal after encoding to signal processing module 14.
Described external equipment can comprise the comprehensive aobvious airborne equipment such as control, air data computer (ADC), Global Navigation Satellite System (GNSS), inertial navigation system (IRS), flight management system (FMS).
Embodiment of the present invention, by upper, upper antenna receives 1030MHz and 1090MHz signal, by the first and/or second amplitude limiter, amplitude limiting processing is carried out to 1030MHz and 1090MHz signal, by first and/or the 2nd 1030-1090MHz bandpass analog filter shield other frequency band signals, by the first and/or second low noise amplifier, signal is amplified, by the first and/or second power splitter, signal is respectively divided into two-way 1030MHz and two-way 1090MHz signal, by first and/or the 2nd 1030MHz filter filtering is carried out to 1030MHz signal, by first and/or the 2nd 1090MHz filter filtering is carried out to 1090MHz, by first and/or the 2nd 1030MHz low noise amplifier 1030MHz signal is amplified, by first and/or the 2nd 1090MHz low noise amplifier 1090MHz signal is amplified, radio frequency sampling module will be sent into through amplifying signal again to carry out sampling and analog-to-digital conversion, digital signal after conversion is sent into signal processing module and is carried out decoding and identifying, to determine A/C/S request signal or 1090ES ADS-BIN signal, and this differentiation result is delivered to data processing module, if A/C/S request signal, then data processing module then sends relevant answer signal to signal processor according to this request signal, signal processor carries out encoding the response according to answer signal, again by the signal after coding by transmitter module and upper, lower antenna sends.
Embodiment of the present invention, when 1030MHz and/or the 1090MHz signal received by upper antenna, then 1030MHz and/or the 1090MHz signal received is processed to be divided into two-way, a 1030MHz analog filter, a 1090MHz analog filter, a 1030MHz low noise amplifier, a 1090MHz low noise amplifier by the first amplitude limiter, a 1030-1090MHz bandpass analog filter, the first low noise amplifier, the first power splitter; When 1030MHz and/or the 1090MHz signal received by lower antenna, then 1030MHz and/or the 1090MHz signal received is processed to be divided into two-way, the 2nd 1030MHz analog filter, the 2nd 1090MHz analog filter, the 2nd 1030MHz low noise amplifier, the 2nd 1090MHz low noise amplifier by the second amplitude limiter, the 2nd 1030-1090MHz bandpass analog filter, the second low noise amplifier, the second power splitter.
Embodiment of the present invention is integrated by standard S mode answering machine with 1090ESADS-B two function i ntegration, an equipment is made to achieve two functions, compact conformation, information all kinds of many, contain much information, integrated level is high, reduce the complexity that equipment is installed, simplify the master-plan of answering machine platform, save cost.Another aspect of embodiment of the present invention, the present invention, not as traditional technology, needs first by Analogue mixer, radiofrequency signal to be converted to intermediate-freuqncy signal; But Direct Sampling radiofrequency signal, in signal processing module, build digital quadrature device group replace analog down converter; Transmitter module does not convert intermediate-freuqncy signal to radiofrequency signal by Analogue mixer simultaneously, but by directly exporting radiofrequency signal with the DA chip of DDS function or modulator, owing to simulating up/down frequency converter and interlock circuit without the need to using, radio circuit is simple, digitized degree is high, reduce equipment power dissipation and weight, substantially increase reliability.
Refer to Fig. 2, Fig. 2 is the block diagram that the present invention has S mode answering machine second embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts of the present embodiment is compared with the first embodiment, and its difference is: between the first low pass filter and a receipts/switch, increase by the first circulator 20, between the second low passband and a receipts/switch, increase by the second circulator 20 ＇.Separately, the transmitter module in the present embodiment is directly connected with the first circulator 20 and the second circulator 20 ＇.
The embodiment of the present invention, increases circulator as transmitting/receiving signal selector, and its advantage does not need high power switch at a high speed and control signal thereof.After circulator, the transmit-receive switch of receive path is mainly used in, when launching, being disconnected by receiving branch, protection low noise amplifier and rear interlock circuit.This transmit-receive switch is input as low-power level signal, easily realizes.If optimize receive path design further, Rational choice back-end circuit running parameter, then this transmit-receive switch also can.
Refer to Fig. 3, Fig. 3 is the block diagram that the present invention has S mode answering machine the 3rd embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The S mode answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts of the present embodiment is compared with the first embodiment, and the antenna of the present embodiment adopts single antenna 300, the receive path that in receiver module, Jin You mono-tunnel is connected with this single antenna 300.Namely comprise:
The low pass filter 301 be connected with antenna 300, be connected with low pass filter 301 one receives/sends out switch 302, open the amplitude limiter 303 that 302 passes are connected with receiving/send out, the 1030-1090MHz bandpass analog filter 304 be connected with amplitude limiter 303, a low noise amplifier 305 is connected with 1030-1090MHz bandpass analog filter 304, the power splitter 306 be connected with low noise amplifier 305, 1030MHz analog filter 307 and the 1090MHz analog filter 308 be connected with power splitter 306, 1030MHz low noise amplifier 309 and the 1090MHz low noise amplifier 310 be connected with 1030MHz analog filter 307 and 1090MHz analog filter 308 respectively.
Refer to Fig. 4, Fig. 4 is the block diagram that the present invention has S mode answering machine the 4th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The present embodiment is compared with the 3rd embodiment, and its difference is: the present embodiment is connected with circulator 401 between antenna and a receipts/switch.
Refer to Fig. 5, Fig. 5 is the block diagram that the present invention has S mode answering machine the 5th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The present embodiment is compared with the first embodiment, and the present embodiment receiver module does not comprise the first power splitter in the first embodiment, the 1030MHz analog filter be connected with the first power splitter and 1090MHz analog filter, the 1030MHz low noise amplifier be connected with a 1030MHz analog filter and a 1090MHz analog filter respectively and a 1090MHz low noise amplifier; And do not comprise the second amplifirer, the 2nd 1030MHz analog filter be connected with the second power splitter and 1090MHz analog filter, the 2nd 1030MHz low noise amplifier be connected with the 2nd 1030MHz analog filter and the 2nd 1090MHz analog filter respectively and the 2nd 1090MHz low noise amplifier.The A/D number of chips of radio frequency sampling module 13 is compared the first embodiment and is decreased two simultaneously.Namely the receiver module of the present embodiment eliminates two-way power splitter, two-way 1030MHz analog filter and two-way 1090MHz analog filter, the two paths of signals received by upper and lower two slave antennas is respectively through first, second low pass filter, first, second receives/sends out switch, first, second amplitude limiter, first, 2nd 1030-1090MHz band pass filter, first, directly enter radio frequency sampling module 13 after second low noise amplifier and carry out A/D sampling, further simplify receive path hardware circuit design, but add complexity and the technical difficulty of follow-up signal process.
Refer to Fig. 6, Fig. 6 is the block diagram that the present invention has S mode answering machine the 6th embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The difference of the present embodiment and the 5th embodiment is: the receiver module of the present embodiment is received/sent out to have additional the first circulator between switch and the first low pass filter and receive/send out second between switch and the second low pass filter first and has additional the second circulator.
Refer to Fig. 7, Fig. 7 is the block diagram that the present invention has signal processing module in S mode answering machine first embodiment of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansion texts, the second embodiment, the 3rd embodiment and the 4th embodiment.Particularly, described signal processing module comprises: the digital quadrature transformation device group unit 70, what be connected with the digital quadrature transformation device group unit 70 carries out pretreated video pre-processing units 71 to signal, be connected with video pre-processing units 71 and the A/C/S mode query signal decoding unit 72 that 1030MHz signal is decoded and the 1090ESADS-BIN signal decoding unit 73 that 1090MHz signal is decoded, the S mode be connected with described A/C/S mode query signal decoding unit 72 replys PPM/PCM coding unit 74, 1090ESADS-BOUT code signal coding unit 75, and reply with described S mode the DA chip data dispensing unit 76 that PPM/PCM coding unit 74 and 1090ESADS-BOUT code signal coding unit 75 be connected.Described A/C/S mode signal inquiry decoding unit 72 is also connected with data processing module with 1090ESADS-B IN signal decoding unit 73, process for decoded signal is sent to data processing module, described S mode response PPM/PCM coding unit 74 is also connected with data processing module with 1090ESADS-BOUT coding unit 75, for the answer signal corresponding to request signal that send according to data processing module or encode according to the signal that data module active sends.Wherein:
Described the digital quadrature transformation device group unit 70 is for two-way 1030MHz numerical sequence signal X
1(n), X
2(n) and two-way 1090MHz numerical sequence signal X
3(n), X
4n () carries out orthogonal transform process, and the signal after process is sent to video pre-processing units 71, and described the digital quadrature transformation device group unit comprises digital band-pass filter unit 701 and digital quadrature device group 702.
Described video pre-processing units 71 completes pulse characteristics extraction, up and down sky line options and ASK envelope demodulation and operates, then complete the sequence of operations such as pattern discrimination, request signal decoding, 1090ESADS-BIN signal decoding according to envelope signal, and associated processing outcomes is uploaded to data processing module.Described video pre-processing units 71 comprises: signal characteristic abstraction unit 711, for carrying out pulse characteristics extraction to the signal after quadrature transformer group cell processing; Up/down antenna selected cell 712, for being 1030MHz signal when the signal that receive, then receiving two paths of signals amplitude by up/down antenna or the time of advent compares, exporting a road antenna selection signals; ASK envelope demodulation unit 713, is connected with described signal characteristic abstraction unit and up/down antenna selected cell 712, and the road signal sent for receiving upper and lower antenna selected cell carries out demodulation; Also directly be connected with described signal characteristic abstraction unit 711, carry out demodulation for the 1090MHz signal sent signal characteristic abstraction unit 711.
Described A/C/S mode query signal decoding unit 72, comprises signal mode judgement unit 721, and it is S mode request signal or A/C mode query signal for differentiating the signal after ASK envelope demodulation to distinguish described 1030MHZ signal; If 1030MHZ signal is S mode request signal, then by the P of this S mode request signal
6pulse and each enable signal sequential are adjusted together and are carried out decoding and message analysis process, the wherein P of S mode request signal
6pulse adopts DPSK modulation system, and processing procedure is first for P
6the message signals of pulse carries out DPSK demodulation, and the 24 bit address information wherein comprised are carried out CRC check, if it is consistent with the machine address to obtain this address through inspection, notice S mode response PPM/PCM coding unit 74 carries out coding response; If 1030MHz signal is A/C signal, then notify that S mode promises that PPM/PCM coding unit 74 carries out coding response.Described A/C/S decoding unit is also for being sent to data processing module by decoded inquiry message, and described data processing module sends response message to described S mode response PPM/PCM coding unit 74 according to the inquiry message received.
Described S mode response PPM/PCM coding unit 74 is also connected with described data processing module, the answer signal relevant to request signal for sending according to data processing module is encoded, described S mode response PPM/PCM coding unit 74 comprises PPM coding unit 741 and pcm encoder unit 742, described PPM coding unit 741 is for encoding to the answer signal of S mode, described pcm encoder unit 742 is for encoding to the answer signal of A/C pattern, and the signal after coding is sent to DA chip data dispensing unit 76.
ASK envelope demodulation unit 713 and the data processing module of described 1090ESADS-BIN signal decoding unit 73 and described video pre-processing units 71 are connected, for carrying out the process such as preamble pulse detection, PPM demodulation, information extraction to the 1090MHz signal after ASK envelope demodulation, and the signal after process is sent to data processing module.
Described 1090ESADS-BOUT code signal coding unit 75, be connected with described data processing module, for receiving the relevant information of the aircraft that data processing module sends and carrying out PPM coding according to 1090ESADS-BOUT sequential, be sent to DA chip data dispensing unit 76 through coded signal.
Described DA chip data dispensing unit 76 is for receiving the signal after coding of S mode response PPM/PCM coding unit 74 and the transmission of 1090ESADS-BOUT code signal coding unit 75, and produce two-way I/Q orthogonal signalling, D/A chip configuration data-signal and reference clock signal according to the code signal received, the 1090MHz radiofrequency signal with provisioning information is produced according to above three kinds of signals, and this 1090MHz radiofrequency signal with provisioning information is sent to transmitter module, described transmitter module is launched by antenna.
Understandable, DA chip data dispensing unit 76 described herein is essential feature of the present invention not, and in other examples, this DA chip data dispensing unit 76 can not also be comprised in signal processing module.
Refer to Fig. 8, Fig. 8 is the block diagram that the present invention has signal processing module in S mode answering machine the 5th embodiment of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansion texts and the 6th embodiment.Wherein, this signal processing module is only from the difference of the signal processing module in first to fourth embodiment: the function treatment mode of the digital quadrature transformation device group unit is different, and it is all identical with the connected mode of other unit in signal processing module.The reason that this digital quadrature transformation device group cell processing mode is different is because the change of the structure of receiver module; The digital quadrature transformation device group unit of the present embodiment aims at the receiver module of the 5th embodiment and the 6th embodiment and designs.
Particularly, described the digital quadrature transformation device group unit internal build multichannel 1030MHz and 1090MHz digital filter bank, to extract 1030MHz request signal Serial No. X respectively
1(n), X
2(n) and 1090ESADS-BIN signal digital sequence X
3(n), X
4(n), then build the digital quadrature transformation device group orthogonal transform process is carried out to described numerical sequence signal, then result is sent into video pre-processing units.
Should be appreciated that the signal processing module in the present embodiment can also comprise DA chip data dispensing unit.
Refer to Fig. 9, Fig. 9 is the block diagram that the present invention has S mode answering machine transmitter module one embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.Described transmitter module is for launching A/C/S pattern answer signal or the 1090ESADS-BOUT signal of 1090MHz.Described transmitter module comprises:
With the high-speed d/a transducer 91 of DDS function, the pre-amplifier 92 be connected with high-speed d/a transducer 91, the 1090MHz analog filter 93 be connected with described pre-amplifier 92, the power amplifier 94 be connected with described 1090MHz analog filter 93 and the antenna selection switch 95 be connected with described power amplifier 94, the I/Q orthogonal signalling that described D/A converter 91 Received signal strength processing module chips data configuration unit produces, D/A chip configuration data-signal and reference clock signal, 1090MHz radiofrequency signal with specified signal is produced through pre-amplifier 92 according to described signal, 1090MHz analog filter 93, power amplifier 94 carries out filtering and is sent to antenna after amplifying process, to carry out 1090MHz answer signal or the transmission to the 1090ESADS-BOUT code signal that data processing module initiatively generates.Described antenna selection switch sends answer signal or 1090ESADS-BOUT code signal for selecting upper antenna or lower antenna.Described antenna selection switch is single-pole double-throw switch (SPDT).
Refer to Figure 10, figure is the block diagram that the present invention has S mode answering machine transmitter module one embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The transmitter module of present embodiment comprises:
Modulator 1001, the pre-amplifier be connected with modulator, the 1090MHz analog filter be connected with pre-amplifier, the power amplifier be connected with analog filter and antenna selection switch, the PPM that described modulator exports according to signal processing module or pcm encoder answer signal and modulation select signal to modulate the 1090MHZ carrier signal that frequency source provides, the radiofrequency signal with provisioning information after modulation is sent into pre-amplifier, 1090MHz filter, antenna is sent to after power amplifier process, to carry out the transmission of 1090MHz answer signal or the transmission to the 1090ESADS-BOUT code signal that data processing module initiatively generates, described antenna selection switch sends answer signal or 1090ESADS-BOUT code signal for selecting upper antenna or lower antenna.The transmitter module of present embodiment adopts modulator 1001 to substituted for the high-speed d/a transducer of the band DDS function in above-mentioned transmitter module.
Refer to Figure 11, Figure 11 is the S mode answering machine radio frequency sampling of Automatic dependent surveillance broadcast ability and the theory diagram of the digital quadrature transformation device that the present invention has 1090 megahertz expansion texts.The digital quadrature transformation device of the program is applicable to the S mode answering machine of above-mentioned any embodiment.
Radio frequency Direct Sampling in the program according to first-order bandpass sampling law, directly to sample to narrow radio frequency signal lower than the sampling rate of Nyquist (Nyquist) sampling thheorem.Band-pass Sampling Technology is relied on to use lower sample frequency, the feature of reflection radiofrequency signal, the number of sampled point can be greatly reduced like this, reduce the requirement to A/D device, also reduce the processing load of subsequent cell, utilize the power of FPGA simultaneously, digital filter and digital quadrature mixer are realized by FPGA, numerical sequence signal x (n) passes through quadrature downconvert, digital orthogonal baseband signal I (n) and Q (n) is obtained after low-pass filtering and D times of filtering extraction process, then send into feature extraction unit and carry out instantaneous amplitude a (n), instantaneous phase
with the calculating of instantaneous frequency f (n), finally these temporal characteristics are transferred to the settling signal feature extraction of subsequent logic unit and demodulation together with two digital orthogonal baseband signals I (n) with Q (n).Its operation principle is as follows:
By
digital controlled oscillator NCO frequency is located at f by known (1)
0, then
I
1(n), Q
1n () can obtain respectively after low pass filter:
In sum, the present invention has the following advantages:
One, standard S mode answering machine and 1090ESADS-B two function i ntegration are integrated by the present invention, and an equipment achieves two functions, compact conformation, information category is many, contain much information, and integrated level is high, and the equipment that reduces installs complexity, simplify platform master-plan, save cost.
Two, radiofrequency signal is not transformed into intermediate-freuqncy signal by Analogue mixer by receiver module of the present invention, but Direct Sampling radiofrequency signal, in FPGA, build digital quadrature device group replace analog down converter; Intermediate-freuqncy signal is not transformed into radiofrequency signal by Analogue mixer by transmitter module simultaneously, but by directly exporting radiofrequency signal with the DA chip of DDS function or modulator, owing to simulating up/down frequency converter and interlock circuit without the need to using, radio circuit is simple, digitized degree is high, reduce equipment power dissipation and weight, substantially increase reliability.
Three, the present invention's two functions share aircraft up/down two slave antenna (Small General Aircraft also can install common antenna), and compared with equipped standalone feature equipment, required antenna amount reduces by half, and reduces the design difficulty of airframe antenna layout, facilitates the maintenance of antenna.
Four, the present invention according to the different demands of application platform, can carry out antenna amount and circuit structure cutting, to meet the requirement of the different application platforms such as airborne, ground; By upgrading the continuous expansion of data processing software and upgrading, different ADS-B can be adapted to and apply; Also can adjust local circuit, expand the functions such as same frequency range such as UATADS-B, DME, expand range of application of the present invention further.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. have the S mode answering machine of Automatic dependent surveillance broadcast ability for 1090 megahertzes expansion texts, it has answering to A/C/S mode query and 1090ES ADS-B function, comprising:
Antenna, for receiving 1030MHz and 1090MHz signal and sending 1090MHz signal;
Receiver module, is connected with antenna, for 1030MHz and the 1090MHz signal received being carried out amplitude limit, impurity elimination ripple and amplification by antenna;
Radio frequency sampling module, is connected with receiver module, for sampling to the signal after receiver module processes and being converted to digital signal;
Signal processing module, with radio frequency sampling model calling, for identifying the signal after radio frequency sampling module samples and decoding, to identify the A/C/S request signal or 1090ES ADS-B IN signal that the signal received is 1030MHz, and decoded signal is sent to data processing module;
Described data processing module, be connected with signal processing module and connect with the external equipment in aircraft, for receiving through decoded signal and processing this decoded signal, wherein, the decoded signal received when data processing module is the A/C/S request signal of 1030MHz, then send the answer signal relevant to this A/C/S request signal to signal processing module; When the signal received is 1090ES ADS-B IN signal, this signal is sent to external equipment to show this signal;
Described signal processing module, the relevant answer signal also for sending data processing module is encoded and/or the data that send according to data processing module and initiatively generate 1090ES ADS-B OUT code signal according to 1090ES ADS-B OUT sequential; And
Transmitter module, for launching the signal after signal processing module coding;
Described signal processing module comprises:
The digital quadrature transformation device group unit, be connected with described the digital quadrature transformation device group unit and pretreated video pre-processing units is carried out to signal, be connected with described video pre-processing units and the A/C/S mode query signal decoding unit that 1030MHz signal is decoded and the 1090ESADS-B IN signal decoding unit that 1090MHz signal is decoded, the S mode be connected with described A/C/S mode query signal decoding unit replys PPM/PCM coding unit, the 1090ES ADS-B OUT code signal coding unit be connected with data processing module, wherein, described A/C/S mode signal inquiry decoding unit is also connected with data processing module with 1090ES ADS-B IN signal decoding unit, process for decoded signal is sent to data processing module, described S mode response PPM/PCM coding unit is also connected with data processing module, the answer signal corresponding to request signal for sending according to data processing module is encoded, described 1090ESADS-B OUT code signal coding unit is also connected with data processing module, the 1090ES ADS-B OUT sequential initiatively sent according to data module and information are encoded, or
The digital quadrature transformation device group unit, the video pre-processing units be connected with described the digital quadrature transformation device group unit, the A/C/S mode query signal decoding unit be connected with described video pre-processing units and 1090ESADS-B IN signal decoding unit, the S mode be connected with described A/C/S mode query signal decoding unit replys PPM/PCM coding unit, the 1090ES ADS-B OUT code signal coding unit be connected with data processing module, the DA chip data dispensing unit that PPM/PCM coding unit and 1090ES ADS-B OUT code signal coding unit be connected is replied with S mode, described A/C/S mode signal inquiry decoding unit is also connected with data processing module with 1090ES ADS-B IN signal decoding unit, process for decoded signal is sent to data processing module, described S mode response PPM/PCM coding unit is also connected with data processing module, the answer signal corresponding to request signal for sending according to data processing module is encoded, described 1090ES ADS-B OUT code signal coding unit is also connected with data processing module, encodes for the 1090ES ADS-B OUT sequential that initiatively sends according to data processing module and information,
Wherein, described the digital quadrature transformation device group unit is to two-way 1030MHz numerical sequence signal X
1(n), X
2(n) and two-way 1090MHz numerical sequence signal X
3(n), X
4n () carries out orthogonal transform process, then result is sent into video pre-processing units; Or in internal build multichannel 1030MHz and 1090MHz digital filter bank, to extract 1030MHz request signal Serial No. X respectively
1(n), X
2(n) and 1090ESADS-B IN signal digital sequence X
3(n), X
4(n), then build the digital quadrature transformation device group orthogonal transform process is carried out to described numerical sequence signal, then result is sent into video pre-processing units.
2. there is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 1, it is characterized in that: described antenna comprises heaven line and lower antenna.
3. have the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 1 or 2, it is characterized in that, described receiver module comprises:
Be connected with antenna low pass filter, receipts/the send out switch be connected with low pass filter, with receive/the switch amplitude limiter, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter and the low noise amplifier be connected with 1030-1090MHz band pass filter that are connected; Or
Be connected with antenna low pass filter, the circulator be connected with antenna, receipts/the send out switch be connected with circulator, with receive/the switch amplitude limiter, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter, the low noise amplifier that is connected with 1030-1090MHz band pass filter that are connected; Or
Low pass filter is connected with antenna, the receipts be connected with low pass filter/send out switch, the amplitude limiter be connected with a receipts/switch, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter and the low noise amplifier be connected with 1030-1090MHz band pass filter, the power splitter be connected with low noise amplifier, the 1030MHz analog filter be connected with power splitter and 1090MHz analog filter, the 1030MHz signal low noise amplifier be connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090MHz signal low noise amplifier, or
Low pass filter is connected with antenna, circulator is connected with low pass filter, the receipts be connected with circulator/send out switch, the amplitude limiter be connected with a receipts/switch, the 1030-1090MHz bandpass analog filter be connected with amplitude limiter and the low noise amplifier be connected with 1030-1090MHz band pass filter, the power splitter be connected with low noise amplifier, the 1030MHz analog filter be connected with power splitter and 1090MHz analog filter, the 1030MHz signal low noise amplifier be connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090MHz signal low noise amplifier.
4. have the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 3, it is characterized in that, described video pre-processing units comprises:
Signal characteristic abstraction unit, for carrying out pulse characteristics extraction to the signal after quadrature transformer group cell processing;
Up/down antenna selected cell, for being 1030MHz signal when the signal that receive, then receiving two paths of signals amplitude by up/down antenna or the time of advent compares, exporting a road antenna selection signals and a road ASK envelope demodulation signal;
ASK envelope demodulation unit, is connected with described signal characteristic abstraction unit and up/down antenna selected cell, and the road signal sent for receiving upper and lower antenna selected cell carries out demodulation; 1090MHz signal also for sending signal characteristic abstraction unit carries out demodulation.
5. there is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 4, it is characterized in that, described A/C/S mode query signal decoding unit is also connected with described data processing module, for decoded request signal is sent to data processing module; Described decoding unit comprises:
Signal mode judgement unit, for differentiating that to the signal after ASK envelope demodulation described 1030MHZ signal is S mode request signal or A/C mode query signal;
If 1030MHZ signal is S mode request signal, then by the P of this S mode request signal
6pulse and each enable signal sequential are adjusted together and are carried out decoding and message analysis process, the wherein P of S mode request signal
6pulse adopts DPSK modulation system, and processing procedure is first for P
6the message signals of pulse carries out DPSK demodulation, and the 24 bit address information wherein comprised are carried out CRC check, if it is consistent with the machine address to obtain this address through inspection, notice S mode response PPM/PCM coding unit carries out coding response;
If 1030MHz signal is A/C signal, then notify that S mode promises that PPM/PCM coding unit carries out coding response.
6. there is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 5, it is characterized in that, described S mode response PPM/PCM coding unit is also connected with data processing module, the answer signal relevant to request signal for sending according to data processing module is encoded, S mode response PPM/PCM coding unit comprises PPM coding unit and pcm encoder unit, and described PPM coding unit is used for carrying out encoding the response to S mode request signal; Described pcm encoder unit is used for carrying out encoding the response to A/C mode query signal.
7. have the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 6, it is characterized in that, described transmitter module comprises:
With the high-speed d/a transducer of DDS function, the pre-amplifier be connected with high-speed d/a transducer, the 1090MHz analog filter be connected with described pre-amplifier, the power amplifier be connected with described analog filter and antenna selection switch, the I/Q orthogonal signalling that described D/A converter Received signal strength processing module produces, D/A chip configuration data-signal and reference clock signal, 1090MHz radiofrequency signal with specified signal is produced through pre-amplifier according to described signal, 1090MHz filter, antenna is sent to after power amplifier process, to carry out answer signal or the transmission to the 1090ES ADS-B OUT code signal that data processing module initiatively generates, or
Modulator, the pre-amplifier be connected with modulator, the 1090MHz analog filter be connected with pre-amplifier, the power amplifier be connected with analog filter and antenna selection switch, the PPM that described modulator exports according to signal processing module or pcm encoder answer signal and modulation select signal to modulate the 1090MHZ carrier signal that frequency source provides, the radiofrequency signal with provisioning information after modulation is sent into pre-amplifier, 1090MHz filter, antenna is sent to after power amplifier process, to carry out the transmission of answer signal or the transmission to the 1090ES ADS-B OUT code signal that data processing module initiatively generates,
Described antenna selection switch sends answer signal or 1090ESADS-B OUT code signal for selecting upper antenna or lower antenna.
8. there is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts as claimed in claim 1 or 2, it is characterized in that: described antenna adopts omnidirectional antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711878.1A CN103701488B (en) | 2013-12-21 | 2013-12-21 | There is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711878.1A CN103701488B (en) | 2013-12-21 | 2013-12-21 | There is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103701488A CN103701488A (en) | 2014-04-02 |
| CN103701488B true CN103701488B (en) | 2015-10-07 |
Family
ID=50362903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310711878.1A Active CN103701488B (en) | 2013-12-21 | 2013-12-21 | There is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103701488B (en) |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330774B (en) * | 2014-11-15 | 2017-01-25 | 安徽四创电子股份有限公司 | FPGA (Field Programmable Gate Array)-based S-mode secondary radar decoder |
| CN104362982A (en) * | 2014-11-18 | 2015-02-18 | 无锡科思电子科技有限公司 | LNA (Low Noise Amplifier) TR (Transmitter and Receiver) assembly using superposition type amplifying structure |
| CN104485895B (en) * | 2014-11-18 | 2017-05-17 | 何莹 | High-precision TR (transmitter-receiver) component with CA3140 amplifier |
| CN104393879B (en) * | 2014-11-26 | 2016-08-24 | 成都中远信电子科技有限公司 | A kind of air-ground narrow-band communication system for unmanned plane |
| CN105681121B (en) * | 2014-12-31 | 2018-10-19 | 中国电子信息产业集团有限公司第六研究所 | A kind of detection method of 1090ES ADS-B message headers |
| CN104579391A (en) * | 2015-02-06 | 2015-04-29 | 合肥戎科信息技术开发有限公司 | Ads-b receiver module |
| CN106341152B (en) * | 2015-07-08 | 2019-02-05 | 中国科学院微电子研究所 | A kind of radio-frequency front-end, transmitting terminal, receiving end and MIMO communication system |
| CN105429658A (en) * | 2015-11-11 | 2016-03-23 | 中国电子科技集团公司第二十九研究所 | Wideband digital channelized system and method based on RF direct sampling |
| CN105510873B (en) * | 2015-12-01 | 2017-12-08 | 中电科航空电子有限公司 | The signal processing method of S mode answering machine based on amplitude-comprised direction-finding system |
| CN105425252A (en) * | 2015-12-17 | 2016-03-23 | 四川九洲空管科技有限责任公司 | Portable multifunctional outfield inspection instrument based on 1090ES (1090MHz Extended Squitter) data link |
| CN106291456B (en) * | 2016-07-29 | 2018-07-24 | 中国航空无线电电子研究所 | A kind of ADS-B earth stations having monopulse direction finding function |
| CN106409014A (en) * | 2016-10-27 | 2017-02-15 | 中国航空无线电电子研究所 | General aviation ADS-B terminal |
| CN106817135B (en) * | 2016-12-09 | 2019-06-07 | 中国电子科技集团公司第五十研究所 | The beechnut realized based on software and radio technique |
| CN107179778B (en) * | 2017-06-21 | 2020-06-02 | 四川九洲空管科技有限责任公司 | Unmanned aerial vehicle flight control method and device with automatic correlation monitoring function |
| CN107404623B (en) * | 2017-07-10 | 2020-06-23 | 中国民用航空总局第二研究所 | Remote receiver and method of multipoint positioning system based on CPCI architecture |
| CN107369339A (en) * | 2017-08-29 | 2017-11-21 | 中国民用航空总局第二研究所 | ADS B downlink datas link analysis checking system based on CPCI frameworks |
| CN109756238A (en) * | 2017-11-08 | 2019-05-14 | 中兴通讯股份有限公司 | A kind of processing method and processing device of multi-band signal |
| CN108021060B (en) * | 2017-11-09 | 2020-10-09 | 中国航空无线电电子研究所 | ADS-B chip of integrated radio frequency |
| CN109905161A (en) * | 2017-12-08 | 2019-06-18 | 中电科特种飞机系统工程有限公司 | A kind of data transmission system, method and the medium of portable ADS-B |
| US10602395B2 (en) | 2018-05-16 | 2020-03-24 | The Mitre Corporation | System and methods for monitoring aviation RF environments |
| CN109327254A (en) * | 2018-07-25 | 2019-02-12 | 南京航空航天大学 | ADS-B transceiver machine and method based on software radio |
| CN110289872A (en) * | 2019-08-05 | 2019-09-27 | 上海航天计算机技术研究所 | Full duplex very high frequency(VHF) data exchange system receiver |
| US11320528B1 (en) * | 2019-11-20 | 2022-05-03 | Telephonics Corporation | Monopulse secondary surveillance radar system |
| CN111081075B (en) * | 2020-01-19 | 2020-12-22 | 中国民用航空总局第二研究所 | S-mode DAPs data real-time monitoring method and system |
| CN111276012B (en) * | 2020-01-21 | 2021-07-30 | 成都民航空管科技发展有限公司 | S-mode signal receiving and processing device compatible with ADS-B and multipoint positioning |
| CN111683343B (en) * | 2020-06-05 | 2022-07-05 | 成都玖锦科技有限公司 | ATC and DME combined comprehensive test system |
| CN111650861B (en) * | 2020-06-05 | 2023-04-21 | 成都玖锦科技有限公司 | Digital signal processing module for ATC and DME test system |
| CN112039544A (en) * | 2020-07-31 | 2020-12-04 | 西安凌北电子科技有限公司 | Three-channel direct-sampling radio frequency module |
| CN112054812A (en) * | 2020-08-30 | 2020-12-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Low-carrier-borne identification response and ADS-B integrated transceiving system |
| CN112468181A (en) * | 2020-11-13 | 2021-03-09 | 四川九洲空管科技有限责任公司 | Direct radio frequency receiving and dispatching navigation management response processing system applied to CNI architecture |
| CN112700680B (en) * | 2020-12-15 | 2022-05-17 | 四川九洲空管科技有限责任公司 | Multidimensional flight environment monitoring system |
| CN112763983B (en) * | 2020-12-25 | 2022-04-26 | 四川九洲空管科技有限责任公司 | Pairing device for secondary radar channel signals |
| CN114383607B (en) * | 2021-12-15 | 2024-05-07 | 中国铁道科学研究院集团有限公司通信信号研究所 | Method for testing BTM dynamic performance by using IMU |
| CN115755048B (en) * | 2022-11-10 | 2023-11-14 | 北京卫星信息工程研究所 | Target detection system based on P-band radar and broadcast type automatic correlation monitoring |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746396B (en) * | 2009-10-30 | 2011-02-02 | 华南理工大学 | Multipath temporary speed limit post answering device and method |
| US9184798B2 (en) * | 2012-03-12 | 2015-11-10 | Broadcom Corporation | Near field communications (NFC) device having adjustable gain |
-
2013
- 2013-12-21 CN CN201310711878.1A patent/CN103701488B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103701488A (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103701488B (en) | There is the S mode answering machine of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts | |
| CN203708241U (en) | Mode-S transponder having 1090 MHz extended message broadcast type automatic correlative monitoring capabilities | |
| CN104579413B (en) | A kind of comprehensive radio frequency system | |
| AU2008201459B2 (en) | Integrated distance measuring equipment and transponder system and method | |
| CN103728602A (en) | Automatic detecting system of S mode responder | |
| US7535405B2 (en) | Method and apparatus for a multifunction radio | |
| WO2006040730A3 (en) | High-capacity location and identification system for cooperating mobiles with frequency agile and time division transponder device on board | |
| US8593330B2 (en) | Multichannel, multimode, multifunction L-band radio transceiver | |
| CN109886116A (en) | Specific emitter identification method and device based on ADS-B | |
| CN109714065A (en) | A kind of spaceborne AIS and ADS-B integrated receiver based on micro-nano satellite | |
| CN105471557A (en) | Carrier aggregation device | |
| CN107037495A (en) | A kind of ultra wide band bimodulus millimeter wave active-passive composite detector | |
| CN104849729A (en) | Beidou satellite navigation anti-interference system | |
| CN204316494U (en) | A kind of two-way 1090ES Data-Link S mode answering machine | |
| CN107831483A (en) | A kind of reception device and coding/decoding method of aviation secondary radar signals | |
| CN107959525A (en) | Spaceborne ACARS method for receiving and processing signal | |
| CN110824437A (en) | High-frequency ground wave radar simultaneous multi-frequency networking MIMO all-digital receiver | |
| CN105510873A (en) | S-mode response system in amplitude comparison direction-finding system, and signal processing method | |
| CN115862386A (en) | Sounding and communication integrated airborne air traffic monitoring system and method | |
| CN109270531A (en) | Data processing server based on software implementation secondary radar | |
| CN115065424A (en) | Vehicle-mounted communication signal comprehensive simulation device | |
| RU49284U1 (en) | RADICAL IDENTIFICATION SYSTEM | |
| CN203616480U (en) | GPS radiofrequency signal and serial interface data demultiplexer | |
| CN202364206U (en) | Receiver circuit based on L wave band | |
| CN207692067U (en) | GSM-R eats dishes without rice or wine monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |