CN203708241U - Mode-S transponder having 1090 MHz extended message broadcast type automatic correlative monitoring capabilities - Google Patents
Mode-S transponder having 1090 MHz extended message broadcast type automatic correlative monitoring capabilities Download PDFInfo
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Abstract
The utility model provides a mode-S transponder having 1090 MHz extended message broadcast type automatic correlative monitoring capabilities, which comprises an antenna, a receiving module, a radio frequency (RF) sampling module, a signal processing module, a data processing module and a transmitting module. The antenna is used for receiving 1030 MHz and 1090 MHz signals and transmitting 1090 MHz signals. The receiving module is connected with the antenna and is used for limiting the amplitudes of 1030 MHz and 1090 MHz signals received by the antenna, removing clutters and amplifying the 1030 MHz and 1090 MHz signals. The RF sampling module is connected with the receiving module and is used for sampling the processed signals and converting the signals into digital signals. The signal processing module is connected with the RF sampling module and is used for decoding signals sampled by the RF sampling module and coding data transmitted from the data processing module. The data processing module is connected with the signal processing module and is also externally connected with external equipment.
Description
Technical field
The utility model relates to air traffic control and air traffic safety monitors field, relates in particular to a kind of S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts.
Background technology
S pattern answering machine can tie surface secondary radar or airborne TCAS system works, conventionally compatible original ATCRBS (ATCRBS) A/C pattern answering machine function (being conventionally called for short ATC answering machine), also possesses Discrete Address Beacon System (DABS simultaneously, be called for short S pattern) S pattern answering machine function, and coordinate airborne TCAS system to realize absolutely empty coordination collision avoidance.S pattern answering machine receives 1030MHz request signal, transmitting 1090MHz answer signal, and answer signal has respectively A pattern, C pattern and S pattern etc. according to interrogation mode difference.
1090ES ADS-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 1090MHz S mode expansion telegraph text data chain (1090ES), general-purpose accessing radio station Data-Link (UAT) and very high frequency(VHF) Data-Link pattern 4(VDL Mode4) 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 when airborne equipment is worked, the intention of reception flight in real time and navigation system are exported, use 1090MHz tranmitting frequency that the machine static information (as identification code, catchword, communication capacity etc.) and multidate information (as air position, scene position, highly, flight trend etc.) are encoded into DF17 or DF18 message periodic broadcasting is gone out, inform aircraft and the ground surveillance equipment of closing on; Simultaneously, the machine also can receive other platform broadcast 1090ES ADS-B OUT data in spatial domain or on ground by 1090ES ADS-B IN function, ground and aerial aircraft all can be seen by aircraft and ground station like this, obtain in the air and traffic above-ground situation and the information relevant to flight safety thereof.ICAO has been defined as ADS-B the main direction of following surveillance technology development, actively pushing forward this technology, some countries have dropped into practical S pattern answering machine and ADS-B surveillance equipment, 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 on the one hand.
It is base band video sampling and IF bandpass sampling that current industry is used Sampling techniques comparatively widely, add analog frequency mixing circuit at radio-frequency front-end, radiofrequency signal is become to the intermediate-freuqncy signal that bandwidth is moderate, again by logarithmic amplification processing, detection goes out vision signal or direct intermediate frequency (IF) Sampling processing, this scheme has alleviated the work load of A/D chip, also has in design the ripe case can be for reference.Radio frequency Direct Sampling structure extremely approaches software radio ideal standard, sample frequency is higher, performance is also better, on the basis of labor the utility model signal receiving module and radio frequency sampling functions of modules and composition, in conjunction with current device level, use the L-band radiofrequency signal Direct Sampling that totally digitilized receiver module is 2GHz to highest frequency to realize.At present existing part S pattern answering machine possesses 1090ES ADS-B OUT function, and 1090ES ADS-B IN function is realized by TCAS receiving circuit conventionally or realized the equipment also S pattern answering machine, 1090ES ADS-B OUT and 1090ES ADS-B IN all functions not being integrated by independent 1090ES ADS-B IN equipment.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts, can have function and 1090ES ADS-B OUT and the 1090ES ADS-B IN all functions of traditional A/C/S interrogation mode simultaneously.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the S pattern answering machine that a kind of Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts is provided, it has answering and 1090ES ADS-B function to A/C/S mode query, comprise: for receiving the antenna of 1030MHz and 1090MHz signal and transmission 1090MHz signal, be connected with described antenna and for the 1030MHz receiving and 1090MHz signal being carried out to amplitude limit by antenna, the receiver module of impurity elimination ripple and amplification, be connected with described receiver module and for to carrying out the radio frequency sampling module that signal after treatment is sampled and is converted to digital signal through receiver module, the signal processing module that is connected with described radio frequency sampling module and encodes for the data of the signal after radio frequency sampling module samples being decoded and data processing module is sent, the data processing module and the transmitter module that are connected with described signal processing module, the external external equipment of described data processing module.
Wherein, described antenna comprises heaven line and lower antenna.
Wherein, described receiver module comprises: the receipts that are connected low pass filter with antenna, are connected with low pass filter/send out switch, with receive/amplitude limiter, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter that a switch is connected and the low noise amplifier being connected with 1030-1090MHz band pass filter, or the circulator that is connected low pass filter with antenna, be connected with antenna, the receipts/send out switch that are connected with circulator, the amplitude limiter being connected with receive/switch, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter, the low noise amplifier being connected with 1030-1090MHz band pass filter, or be connected low pass filter with antenna, receipts/the switch being connected with low pass filter, with the amplitude limiter that receipts/switch is connected, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter and the low noise amplifier being connected with 1030-1090MHz band pass filter, the power splitter being connected with low noise amplifier, the 1030MHz analog filter being connected with power splitter and 1090MHz analog filter, the 1030 signal low noise amplifiers that are connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090 signal low noise amplifiers, or be connected low pass filter with antenna, be connected circulator with low pass filter, receipts/the switch being connected with circulator, with the amplitude limiter that receipts/switch is connected, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter and the low noise amplifier being connected with 1030-1090MHz band pass filter, the power splitter being connected with low noise amplifier, the 1030MHz analog filter being connected with power splitter and 1090MHz analog filter, the 1030 signal low noise amplifiers that are 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 and signal is carried out to pretreated video pre-filtering unit with described the digital quadrature transformation device group unit, the A/C/S mode query signal decoding unit being connected with described video pre-filtering unit and 1030MHz signal is decoded and the 1090ES-ADS-B IN signal decoding unit that 1090MHz signal is decoded, reply PPM/PCM coding unit with the S pattern that described A/C/S mode query signal decoding unit is connected, the 1090ES ADS-B OUT code signal coding unit being 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, described S pattern is replied PPM/PCM coding unit and is also connected with data processing module, or the digital quadrature transformation device group unit, the video pre-filtering unit being connected with described the digital quadrature transformation device group unit, the A/C/S mode query signal decoding unit being connected with described video pre-filtering unit and 1090ES-ADS-B IN signal decoding unit, reply PPM/PCM coding unit with the S pattern that described A/C/S mode query signal decoding unit is connected, the 1090ES ADS-B OUT code signal coding unit being connected with data processing module, reply with S pattern the DA chip data dispensing unit that PPM/PCM coding unit and 1090ES ADS-B OUT code signal coding unit are connected, described A/C/S mode signal inquiry decoding unit is also connected with data processing module with 1090ES-ADS-B IN signal decoding unit, described S pattern is replied PPM/PCM coding unit, 1090ES ADS-B OUT code signal coding unit is also connected with data processing module.
Wherein, described video pre-filtering unit comprises: signal characteristic abstraction unit, the up/down antenna selected cell being connected with described signal characteristic abstraction unit and the ASK envelope demodulation unit being connected with described signal characteristic abstraction unit and up/down antenna selected cell.
Wherein, described A/C/S mode query signal decoding unit is also connected with described data processing module.
Wherein, described S pattern is replied PPM/PCM coding unit and is also connected with data processing module.
Wherein, described transmitter module comprises: with the high-speed d/a transducer of DDS function, the pre-amplifier being connected with high-speed d/a transducer, the 1090MHz analog filter being connected with described pre-amplifier, the power amplifier and the antenna selection switch that are connected with described analog filter, described D/A converter receives the I/Q orthogonal signalling that signal processing module produces, D/A chip configuration data-signal and reference clock signal, produce the 1090MHz radiofrequency signal process pre-amplifier with specified signal according to described signal, 1090MHz filter, power amplifier is sent to antenna after processing, to carry out the transmission of answer signal or the 1090ES ADS-B OUT code signal that active generates to data processing module, or modulator, the pre-amplifier being connected with modulator, the 1090MHz analog filter being connected with pre-amplifier, the power amplifier being connected with analog filter and antenna selection switch, described modulator is modulated with the 1090MHZ carrier signal that modulation selects signal to provide frequency source according to the PPM of signal processing module output or pcm encoder answer signal, the radiofrequency signal with provisioning information after modulation is sent into pre-amplifier, 1090MHz filter, power amplifier is sent to antenna after processing, to carry out the transmission of the transmission of answer signal or the 1090ES ADS-B OUT code signal that active generates to data processing module, described antenna selection switch is used for selecting antenna or lower antenna to send answer signal or 1090ES ADS-B OUT code signal.
Wherein, described antenna adopts omnidirectional antenna.
The beneficial effects of the utility model are: be different from the situation of prior art, the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts of the present utility model, has following beneficial effect:
One, the utility model becomes one standard S pattern answering machine and two functions of 1090ES ADS-B, and an equipment has been realized two functions, compact conformation, information category is many, contain much information, and integrated level is high, has reduced equipment complexity is installed, simplify platform master-plan, saved cost;
Two, the utility model receiver module is not transformed into intermediate-freuqncy signal by Analogue mixer by radiofrequency signal, but Direct Sampling radiofrequency signal builds digital quadrature device group and replaces low-converter in FPGA; Transmitter module is not transformed into radiofrequency signal by Analogue mixer by intermediate-freuqncy signal simultaneously, but directly export radiofrequency signal by the DA chip with DDS function or modulator, due to without using up/down frequency converter and interlock circuit, radio circuit is simple, digitized degree is high, reduce equipment power dissipation and weight, greatly improved reliability;
Three, two functions of the utility model share aircraft up/down two slave antennas (Small General Aircraft also can be installed common antenna), compared with equipped standalone feature equipment, required antenna amount reduces by half, and has reduced the design difficulty of airframe antenna layout, has facilitated the maintenance of antenna;
Four, the utility model can, according to the different demands of application platform, carry out antenna amount and circuit structure cutting, the requirement of the different application platforms such as, ground airborne to meet; Upgrade by the continuous expansion to data processing software and upgrading, can adapt to different ADS-B application; Also can adjust local circuit, expansion functions such as UAT ADS-B, DME, is further expanded range of application of the present utility model with frequency range.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the block diagram that the utlity model has S pattern answering machine first embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 2 is the block diagram that the utlity model has S pattern answering machine second embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Fig. 3 is the block diagram that the utlity model has S pattern 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 utlity model has S pattern 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 utlity model has S pattern 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 utlity model has S pattern 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 utlity model has signal processing module in the S pattern answering machine first, second, third of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansions texts and the 4th embodiment;
Fig. 8 is the block diagram that the utlity model has signal processing module in S pattern answering machine the 5th and the 6th embodiment of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansions texts;
Fig. 9 is the block diagram that the utlity model has S pattern 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 utlity model has S pattern answering machine transmitter module second embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts;
Figure 11 the utlity model has the S pattern answering machine transmitter module radio frequency sampling of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansions texts and the block diagram of the digital quadrature transformation device.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
About term:
Before embodiment of the present utility model is described, need to carry out necessary explaining to some terms.
For example: if occur herein, the terms such as " first ", " second " describe various elements, but these elements should not limited by these terms.These terms are only used for distinguishing an element and another element.Therefore " first " element of, below discussing also can be called as " second " element and not depart from instruction of the present utility model.Should be understood that, in the time mentioning an element " connection " or " connection " to another element, it can directly connect or directly be connected to another element or also can have intermediary element.On the contrary, in the time mentioning that an element " directly connects " or " directly connecting " arrives another element, there is not intermediary element.
Be understandable that, the term using in this article is only not intended to conduct to restriction of the present utility model for describing the object of concrete execution mode.As " antenna " that below use, unless context clearly point out in addition, singulative intention also comprises plural form.
What can further understand is, when using in this manual term " to comprise " and/or when " including ", these terms have indicated the existence of described feature, entirety, step, operation, element and/or parts, but also do not get rid of the existence of above other features, entirety, step, operation, element, parts and/or its group and/or add.
About execution mode:
The S pattern answering machine of a kind of Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts of the present utility model, it has answering and 1090ES ADS-B function to A/C/S mode query, specifically comprise with lower module: antenna, for receiving 1030MHz and 1090MHz signal and sending 1090MHz signal; Receiver module, is connected with antenna, for the 1030MHz receiving and 1090MHz signal being carried out to amplitude limit, impurity elimination ripple and amplification by antenna; Radio frequency sampling module, is connected with receiver module, for sampling and be converted to digital signal carrying out signal after treatment through receiver module; Signal processing module, be connected with radio frequency sampling module, for the signal after radio frequency sampling module samples is identified and is decoded, to identify A/C/S request signal or the 1090ES ADS-B IN signal that the signal receiving is 1030MHz, and decoded signal is sent to data processing module; Described data processing module, be connected with signal processing module and aircraft in external equipment connect, be used for receiving through decoded signal and to this decoded signal and process, wherein, the A/C/S request signal that the decoded signal receiving when data processing module is 1030MHz, sends the answer signal relevant to this A/C/S request signal to signal processing module; In the time that the signal receiving is 1090ES ADS-B IN signal, this signal is sent to external equipment to show this signal and entrained information; Described signal processing module, also for to data processing module send relevant answer signal encode and/or according to data processing module send data and initiatively generate 1090ESADS-B OUT code signal according to 1090ESADS-B OUT sequential; And transmitter module, for the signal after signal processing module coding is launched.In addition, the utility model antenna implementation adopts omnidirectional antenna a period of time.
Particularly, refer to Fig. 1, Fig. 1 is the block diagram that the utlity model has S pattern answering machine first embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertzes expansions texts of the present embodiment comprises the signal processing module 14 that radio frequency sampling module 13 that receiver module 12 that antenna 10 is connected with upper antenna 11, with upper antenna 10 and upper antenna 11 and receiver module 12 connect and radio frequency sampling module 13 connect and data processing module 15 and the transmitter module 16 being connected with signal processing module 14, 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, comprise the first low pass filter 121 being connected with upper antenna 10, first receive/the switch 122 being connected with the first low pass filter 121, with the first amplitude limiter 123 that the first receipts/switch 122 is connected, the 1030-1090MHz bandpass analog filter 124 being connected with the first amplitude limiter 123, be connected the first low noise amplifier 130 with a 1030-1090MHz bandpass analog filter 124, the first power splitter 125 being connected with described the first low noise amplifier 130, the 1030MHz analog filter 126 being connected with the first power splitter 125 and a 1090MHz analog filtering 127, the 1030MHz low noise amplifier 128 being 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 ＇ that are connected with upper antenna 11, the second receive/switch 122 ＇ that are connected with the second low pass filter 121 ＇, with the second amplitude limiter 123 ＇ that the second receipts/switch 122 ＇ is connected, the 2nd 1030-1090MHz bandpass analog filter 124 ＇ that are connected with the second amplitude limiter 123 ＇, the second low noise amplifier 130 ＇ that are connected with the 2nd 1030-1090MHz bandpass analog filter 124 ＇, the second power splitter 125 ＇ that are connected with described the second low noise amplifier 130 ＇, the 2nd 1030MHz analog filter 126 ＇ that are connected with the second power splitter 125 ＇ and the 2nd 1090MHz analog filter 127 ＇, the 2nd 1030MHz low noise amplifier 128 ＇ that are 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 ＇, for carrying out to the received signal filtering, allow to pass through lower than the signal of predeterminated frequency; Receive/send out switch 122,122 ＇, for reception and the sending function of switched antenna; Amplitude limiter 123,123 ＇ are for being limited to amplitude output signal within the scope of 1030MHz and 1090MHz; 1030-1090MHz bandpass analog filter 124,124 ＇ are for allowing the signal of 1030-1090MHz frequency band by shield other frequency band signals simultaneously; Described low noise amplifier 130,130 ＇ are for amplifying signal; Described power splitter 125,125 ＇ are for being divided into two-way by signal; Described 1030MHz analog filter 126,126 ＇ and 1090MHz analog filter 127,127 ＇ are respectively used to eliminate the clutter of 1030MHz and 1090MHz signal; Described 1030MHz low noise amplifier 128,128 ＇ and 1090MHz low noise amplifier 129,129 ＇ are respectively used to 1030MHz and 1090MHz signal to amplify.
By upper and lower antenna reception to 1030MHz/ or 1090MHz signal after low pass filter, amplitude limiter, bandpass analog filter are processed, carry out subchannel processing by power splitter, if 1030MHz signal is carried out filtering, amplified by 1030MHz low noise amplifier by 1030MHz analog filter, be then sent to radio frequency sampling module 13; If 1090MHz signal is carried out filtering, amplified by 1090MHz low noise amplifier by 1090MHz analog filter, 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 any road, four tunnels or several roads low noise amplifier amplify, and this signal is gathered and carries out mould/number conversion.
Described signal processing module 14, for the signal after 13 samplings of radio frequency sampling module is identified and is decoded, to identify A/C/S request signal or the 1090ES ADS-BIN signal that the signal receiving is 1030MHz, and decoded signal is sent to data processing module 15.
Data processing module 15, processes for receiving through decoded signal and to this decoded signal.Wherein, the A/C/S request signal that the decoded signal receiving when data processing module 15 is 1030MHz, sends the answer signal relevant to this A/C/S request signal to signal processing module 14; In the time that the signal receiving is 1090ES ADS-B IN signal, this signal is sent to external equipment to show this signal.
Described signal processing module 14, also encodes for the relevant answer signal that data processing module 15 is sent and/or the data that send according to data processing module 15 and initiatively generate 1090ESADS-B OUT code signal according to 1090ESADS-B OUT sequential;
Transmitter module 16, for launching the signal after signal processing module 14 codings.
Described external equipment can comprise the airborne equipments such as comprehensive aobvious control, air data computer (ADC), Global Navigation Satellite System (GNSS), inertial navigation system (IRS), flight management system (FMS).
The utility model execution mode, by upper, upper antenna reception 1030MHz and 1090MHz signal, by the first and/or second amplitude limiter, 1030MHz and 1090MHz signal are carried out to amplitude limiting processing, 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 1030MHz signal is carried out to filtering, by first and/or the 2nd 1090MHz filter 1090MHz is carried out to filtering, 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, to send into radio frequency sampling module through amplifying signal again samples and analog-to-digital conversion, digital signal after conversion is sent into signal processing module and is decoded and identify, 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, data processing module sends relevant answer signal to signal processing module according to this request signal, signal processing module carries out encoding the response according to answer signal, again by coding after signal by transmitter module and upper, lower antenna sends.
The utility model execution mode, when by 1030MHz and/or the 1090MHz signal of upper antenna reception, the 1030MHz receiving and/or 1090MHz signal are 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 by 1030MHz and/or the 1090MHz signal of lower antenna reception, the 1030MHz receiving and/or 1090MHz signal are 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.
The utility model execution mode becomes one by standard S pattern answering machine with two functions of 1090ES ADS-B, make an equipment realize 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, saved cost.Another aspect of the utility model execution mode, the utility model, not as traditional technology, needs first by Analogue mixer, radiofrequency signal to be converted to intermediate-freuqncy signal; But Direct Sampling radiofrequency signal builds digital quadrature device group and replaces analog down converter in signal processing module; Transmitter module does not convert intermediate-freuqncy signal to radiofrequency signal by Analogue mixer simultaneously, but directly export radiofrequency signal by the DA chip with DDS function or modulator, due to without using up/down frequency converter and interlock circuit, radio circuit is simple, digitized degree is high, reduce equipment power dissipation and weight, greatly improved reliability.
Refer to Fig. 2, Fig. 2 is the block diagram that the utlity model has S pattern answering machine second embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The S pattern answering machine of the Automatic dependent surveillance broadcast ability with 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, increasing by the first circulator 20, between the second low passband ripple device and a receipts/switch, increasing 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 utility model embodiment, increases circulator as transmitting/receiving signal selector, and its advantage is not need high power switch and control signal thereof at a high speed.After circulator, the transmit-receive switch of receive path is mainly used in, in the time of transmitting, receiving branch being disconnected to protection low noise amplifier and rear interlock circuit.This transmit-receive switch is input as low-power level signal, easily realizes.If further optimize receive path design, Rational choice back-end circuit running parameter, this transmit-receive switch also can.
Refer to Fig. 3, Fig. 3 is the block diagram that the utlity model has S pattern answering machine the 3rd embodiment of the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts.The S pattern answering machine of the Automatic dependent surveillance broadcast ability with 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.Comprise:
The low pass filter 301 being connected with antenna 300, receive/the switch 302 being connected with low pass filter 301, with the amplitude limiter 303 that receipts/switch 302 is connected, the 1030-1090MHz bandpass analog filter 304 being connected with amplitude limiter 303, be connected a low noise amplifier 305 with 1030-1090MHz bandpass analog filter 304, the power splitter 306 being connected with low noise amplifier 305, the 1030MHz analog filter 307 being connected with power splitter 306 and a 1090MHz analog filter 308, the 1030MHz low noise amplifier 309 being connected with 1030MHz analog filter 307 and 1090MHz analog filter 308 respectively and a 1090MHz low noise amplifier 310.
Refer to Fig. 4, Fig. 4 is the block diagram that the utlity model has S pattern 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 utlity model has S pattern 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 being connected with the first power splitter and 1090MHz analog filter, the 1030MHz low noise amplifier and the 1090MHz low noise amplifier that are connected with a 1030MHz analog filter and a 1090MHz analog filter respectively; And do not comprise the second amplifirer, the 2nd 1030MHz analog filter that is connected with the second power splitter and 1090MHz analog filter, the 2nd 1030MHz low noise amplifier and the 2nd 1090MHz low noise amplifier that are connected with the 2nd 1030MHz analog filter and the 2nd 1090MHz analog filter respectively, the A/D number of chips of radio frequency sampling module 13 is compared the first embodiment and has been reduced two simultaneously.
The receiver module that is the present embodiment has saved two-way power splitter, two-way 1030MHz analog filter and two-way 1090MHz analog filter, the two paths of signals being received by upper and lower two slave antennas is respectively through first, the second low pass filter, first, second receives/sends out switch, first, the second amplitude limiter, first, the 2nd 1030-1090MHz band pass filter, first, after the second low noise amplifier, directly enter radio frequency sampling module 13 and carry out A/D sampling, further simplify receive path hardware circuit design, but complexity and the technical difficulty of follow-up signal processing are increased.
Refer to Fig. 6, Fig. 6 is the block diagram that the utlity model has S pattern 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 having additional the first circulator and have additional the second circulator between a second receipts/switch and the second low pass filter between a first receipts/switch and the first low pass filter.
Refer to Fig. 7, Fig. 7 is the block diagram that the utlity model has signal processing module in S pattern answering machine the first embodiment, the second embodiment, the 3rd embodiment and the 4th embodiment of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansions texts.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-filtering unit 71 to signal, the A/C/S mode query signal decoding unit 72 being connected with video pre-filtering unit 71 and 1030MHz signal is decoded and the 1090ES ADS-B IN signal decoding unit 73 that 1090MHz signal is decoded, reply PPM/PCM coding unit 74 with the S pattern that described A/C/S mode query signal decoding unit 72 is connected, 1090ES ADS-B OUT code signal coding unit 75, and reply with described S pattern the DA chip data dispensing unit 76 that PPM/PCM coding unit 74 and 1090ES ADS-B OUT code signal coding unit 75 are connected.Described A/C/S mode signal inquiry decoding unit 72 is also connected with data processing module with 1090ES ADS-BIN signal decoding unit 73, for being sent to data processing module, processes decoded signal, described S pattern is replied PPM/PCM coding unit 74 and is also connected with data processing module with 1090ES ADS-B OUT coding unit 75, encodes for the signal initiatively sending with the corresponding answer signal of request signal or according to data module sending according to data processing module.Wherein:
Described the digital quadrature transformation device group unit 70 is for to two-way 1030MHz numerical sequence signal X
1(n), X
2(n) with two-way 1090MHz numerical sequence signal X
3(n), X
4(n) carry out orthogonal transform processing, and signal after treatment is sent to video pre-filtering unit 71, described the digital quadrature transformation device group unit comprises digital band-pass filter unit 701 and digital quadrature device group 702.
Described video pre-filtering unit 71 completes pulse characteristics extraction, upper and lower day line options and ASK envelope demodulation operation, then complete the sequence of operations such as pattern discrimination, request signal decoding, 1090ES ADS-B IN signal decoding according to envelope signal, and relevant treatment result is uploaded to data processing module.Described video pre-filtering unit 71 comprises: signal characteristic abstraction unit 711, for the signal after quadrature transformer group cell processing is carried out to pulse characteristics extraction; Up/down antenna selected cell 712, for being 1030MHz signal when the signal receiving, compares up/down antenna reception output one road antenna selection signals to two paths of signals amplitude or the time of advent; ASK envelope demodulation unit 713, is connected with described signal characteristic abstraction unit and up/down antenna selected cell 712, carries out demodulation for receiving upper and lower antenna selected cell transmission Yi road signal; Also directly be connected with described signal characteristic abstraction unit 711, carry out demodulation for the 1090MHz signal that signal characteristic abstraction unit 711 is sent.
Described A/C/S mode query signal decoding unit 72, comprises signal mode judgement unit 721, and it is S mode query signal or A/C mode query signal for the signal after ASK envelope demodulation being differentiated to distinguish described 1030MHZ signal; If 1030MHZ signal is S mode query signal, by the P of this S mode query signal
6pulse and each enable signal sequential are decoded and message analysis processing, the wherein P of S mode query signal after adjusting together
6pulse adopts DPSK modulation system, and processing procedure is first for P
6the message signals of pulse is carried out DPSK demodulation, and the 24 bit address information that wherein comprise are carried out to CRC check, if obtain through check, this address is consistent with the machine address to be notified S pattern to reply PPM/PCM coding unit 74 to encode and reply; If 1030MHz signal is A/C signal, notifies S pattern to promise PPM/PCM coding unit 74 to encode and reply.Described A/C/S decoding unit is also for decoded request signal is sent to data processing module, and described data processing module sends answer signal to described S pattern according to the request signal receiving and replys PPM/PCM coding unit 74.
Described S pattern is replied PPM/PCM coding unit 74 and is also connected with described data processing module, encode for the answer signal relevant to request signal sending according to data processing module, described S pattern is replied PPM/PCM coding unit 74 and is comprised PPM coding unit 741 and pcm encoder unit 742, described PPM coding unit 741 is for encoding to the answer signal of S pattern, described pcm encoder unit 742 is for the answer signal of A/C pattern is encoded, and the signal after coding is sent to DA chip data dispensing unit 76.
Described 1090ES ADS-B IN signal decoding unit 73 is connected with ASK envelope demodulation unit 713 and the data processing module of described video pre-filtering unit 71, for process ASK envelope demodulation 1090MHz signal is later carried out to the processing such as preamble pulse detection, PPM demodulation, information extraction, and signal after treatment is sent to data processing module.
Described 1090ES ADS-B OUT code signal coding unit 75, be connected with described data processing module, be used for the relevant information of the aircraft that receives data processing module transmission and carry out PPM coding according to 1090ES ADS-B OUT sequential, after coding, signal is sent to DA chip data dispensing unit 76.
Described DA chip data dispensing unit 76 replys for receiving S pattern the signal after coding that PPM/PCM coding unit 74 and 1090ES ADS-B OUT code signal coding unit 75 send, and produce two-way I/Q orthogonal signalling, D/A chip configuration data-signal and reference clock signal according to the code signal receiving, produce the 1090MHz radiofrequency signal with provisioning information 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 not essential feature of the present utility model, and in other embodiment, this DA chip data dispensing unit 76 can also not be comprised in signal processing module.
Refer to Fig. 8, Fig. 8 is the block diagram that the utlity model has signal processing module in S pattern answering machine the 5th embodiment of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansions 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 different reason of this digital quadrature transformation device group cell processing mode 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 respectively 1030MHz request signal Serial No. X
1(n), X
2(n) with 1090ES ADS-B IN signal digital sequence X
3(n), X
4(n), then build the digital quadrature transformation device group described numerical sequence signal is carried out to orthogonal transform processing, then result is sent into video pre-filtering unit.
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 utlity model has S pattern answering machine transmitter module first 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 1090ES ADS-B OUT signal of 1090MHz.Described transmitter module comprises:
With the high-speed d/a transducer 91 of DDS function, the pre-amplifier 92 being connected with high-speed d/a transducer 91, the 1090MHz analog filter 93 being connected with described pre-amplifier 92, the power amplifier 94 being connected with described 1090MHz analog filter 93 and the antenna selection switch 95 being connected with described power amplifier 94, described D/A converter 91 receives the I/Q orthogonal signalling that signal processing module chips data configuration unit produces, D/A chip configuration data-signal and reference clock signal, produce the 1090MHz radiofrequency signal process pre-amplifier 92 with specified signal according to described signal, 1090MHz analog filter 93, power amplifier 94 is sent to antenna after carrying out filtering and amplifying processing, to carry out the transmission of 1090MHz answer signal or the 1090ES ADS-B OUT code signal that active generates to data processing module.Described antenna selection switch is used for selecting antenna or lower antenna to send answer signal or 1090ES ADS-B OUT code signal.Described antenna selection switch is single-pole double-throw switch (SPDT).
Refer to Figure 10, figure is the block diagram that the utlity model has S pattern answering machine transmitter module second 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 being connected with modulator, the 1090MHz analog filter being connected with pre-amplifier, the power amplifier being connected with analog filter and antenna selection switch, described modulator is modulated with the 1090MHZ carrier signal that modulation selects signal to provide frequency source according to the PPM of signal processing module output or pcm encoder answer signal, the radiofrequency signal with provisioning information after modulation is sent into pre-amplifier, 1090MHz filter, power amplifier is sent to antenna after processing, to carry out the transmission of the transmission of 1090MHz answer signal or the 1090ES ADS-B OUT code signal that active generates to data processing module, described antenna selection switch is used for selecting antenna or lower antenna to send answer signal or 1090ES ADS-B OUT code signal.The transmitter module of present embodiment adopts modulator 1001 to replace the high-speed d/a transducer with DDS function in above-mentioned transmitter module.
Refer to Figure 11, Figure 11 the utlity model has the S pattern answering machine radio frequency sampling of Automatic dependent surveillance broadcast ability of 1090 megahertzes expansions texts and the theory diagram of the digital quadrature transformation device.The digital quadrature transformation device of this scheme is applicable to the S pattern answering machine of above-mentioned any embodiment.
Radio frequency Direct Sampling in this scheme is according to first-order bandpass sampling law, directly narrow radio frequency signal is sampled lower than the sampling rate of Nyquist (Nyquist) sampling thheorem.Rely on Band-pass Sampling Technology can use lower sample frequency, the feature of reflection radiofrequency signal, can greatly reduce like this number of sampled point, reduce the requirement to A/D device, also reduced the processing load of follow-up unit, utilize the power of FPGA simultaneously, digital filter and digital quadrature mixing device are realized by FPGA, numerical sequence signal x (n) is by orthogonal mixing, low-pass filtering and D times of filtering extraction obtains digital orthogonal baseband signal I (n) and Q (n) after processing, 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 instantaneous features are transferred to the settling signal feature extraction of subsequent logic unit and demodulation together with two digital orthogonal baseband signal I (n) and Q (n).Its operation principle is as follows:
By
digital controlled oscillator NCO frequency is located at f by known (1)
0,
I
1(n), Q
1(n) after low pass filter, can obtain respectively:
In sum, the utlity model has following advantage:
One, the utility model becomes one standard S pattern answering machine and two functions of 1090ESADS-B, and an equipment has been realized two functions, compact conformation, information category is many, contain much information, and integrated level is high, has reduced equipment complexity is installed, simplify platform master-plan, saved cost.
Two, the utility model receiver module is not transformed into intermediate-freuqncy signal by Analogue mixer by radiofrequency signal, but Direct Sampling radiofrequency signal builds digital quadrature device group and replaces analog down converter in FPGA; Transmitter module is not transformed into radiofrequency signal by Analogue mixer by intermediate-freuqncy signal simultaneously, but directly export radiofrequency signal by the DA chip with DDS function or modulator, owing to simulating up/down frequency converter and interlock circuit without using, radio circuit is simple, digitized degree is high, reduce equipment power dissipation and weight, greatly improved reliability.
Three, two functions of the utility model share aircraft up/down two slave antennas (Small General Aircraft also can be installed common antenna), compared with equipped standalone feature equipment, required antenna amount reduces by half, and has reduced the design difficulty of airframe antenna layout, has facilitated the maintenance of antenna.
Four, the utility model can, according to the different demands of application platform, carry out antenna amount and circuit structure cutting, the requirement of the different application platforms such as, ground airborne to meet; Upgrade by the continuous expansion to data processing software and upgrading, can adapt to different ADS-B application; Also can adjust local circuit, expansion functions such as UAT ADS-B, DME, is further expanded range of application of the present utility model with frequency range.
These are only execution mode of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; 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 utility model.
Claims (9)
1. a S pattern answering machine with the Automatic dependent surveillance broadcast ability of 1090 megahertz expansion texts, answering and 1090ESADS-B function that it has A/C/S mode query, comprising:
For receiving the antenna of 1030MHz and 1090MHz signal and transmission 1090MHz signal, be connected with described antenna and for the 1030MHz receiving and 1090MHz signal being carried out to amplitude limit by antenna, the receiver module of impurity elimination ripple and amplification, be connected with described receiver module and for to carrying out the radio frequency sampling module that signal after treatment is sampled and is converted to digital signal through receiver module, the signal processing module that is connected with described radio frequency sampling module and encodes for the data of the signal after radio frequency sampling module samples being decoded and data processing module is sent, the data processing module and the transmitter module that are connected with described signal processing module, the external external equipment of described data processing module.
2. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 1, is characterized in that: described antenna comprises heaven line and lower antenna.
3. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 1 or 2, is characterized in that, described receiver module comprises:
The receipts that are connected low pass filter with antenna, be connected with low pass filter/send out switch, with receive/amplitude limiter, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter that a switch is connected and the low noise amplifier being connected with 1030-1090MHz band pass filter; Or
The circulator that is connected low pass filter with antenna, be connected with antenna, the receipts that are connected with circulator/send out switch, with the receive/amplitude limiter that a switch is connected, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter, the low noise amplifier that is connected with 1030-1090MHz band pass filter; Or
Be connected low pass filter with antenna, receipts/the switch being connected with low pass filter, with the amplitude limiter that receipts/switch is connected, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter and the low noise amplifier being connected with 1030-1090MHz band pass filter, the power splitter being connected with low noise amplifier, the 1030MHz analog filter being connected with power splitter and 1090MHz analog filter, the 1030 signal low noise amplifiers that are connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090 signal low noise amplifiers, or
Be connected low pass filter with antenna, be connected circulator with low pass filter, receipts/the switch being connected with circulator, with the amplitude limiter that receipts/switch is connected, the 1030-1090MHz bandpass analog filter being connected with amplitude limiter and the low noise amplifier being connected with 1030-1090MHz band pass filter, the power splitter being connected with low noise amplifier, the 1030MHz analog filter being connected with power splitter and 1090MHz analog filter, the 1030 signal low noise amplifiers that are connected with 1030MHz analog filter and 1090MHz analog filter respectively and 1090 signal low noise amplifiers.
4. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 3, is characterized in that, described signal processing module comprises:
The digital quadrature transformation device group unit, be connected and signal is carried out to pretreated video pre-filtering unit with described the digital quadrature transformation device group unit, the A/C/S mode query signal decoding unit being connected with described video pre-filtering unit and 1030MHz signal is decoded and the 1090ES-ADS-BIN signal decoding unit that 1090MHz signal is decoded, reply PPM/PCM coding unit with the S pattern that described A/C/S mode query signal decoding unit is connected, the 1090ES ADS-B OUT code signal coding unit being 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, described S pattern is replied PPM/PCM coding unit and is also connected with data processing module, or
The digital quadrature transformation device group unit, the video pre-filtering unit being connected with described the digital quadrature transformation device group unit, the A/C/S mode query signal decoding unit being connected with described video pre-filtering unit and 1090ES-ADS-B IN signal decoding unit, reply PPM/PCM coding unit with the S pattern that described A/C/S mode query signal decoding unit is connected, the 1090ES ADS-B OUT code signal coding unit being connected with data processing module, reply with S pattern the DA chip data dispensing unit that PPM/PCM coding unit and 1090ES ADS-B OUT code signal coding unit are connected, described A/C/S mode signal inquiry decoding unit is also connected with data processing module with 1090ES-ADS-B IN signal decoding unit, described S pattern is replied PPM/PCM coding unit, 1090ES ADS-B OUT code signal coding unit is also connected with data processing module.
5. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 4, is characterized in that, described video pre-filtering unit comprises:
Signal characteristic abstraction unit, the up/down antenna selected cell being connected with described signal characteristic abstraction unit and the ASK envelope demodulation unit being connected with described signal characteristic abstraction unit and up/down antenna selected cell.
6. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 5, is characterized in that, described A/C/S mode query signal decoding unit is also connected with described data processing module.
7. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 6, is characterized in that, described S pattern is replied PPM/PCM coding unit and is also connected with data processing module.
8. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 7, is characterized in that, described transmitter module comprises:
With the high-speed d/a transducer of DDS function, the pre-amplifier being connected with high-speed d/a transducer, the 1090MHz analog filter being connected with described pre-amplifier, the power amplifier and the antenna selection switch that are connected with described analog filter, described D/A converter receives the I/Q orthogonal signalling that signal processing module produces, D/A chip configuration data-signal and reference clock signal, produce the 1090MHz radiofrequency signal process pre-amplifier with specified signal according to described signal, 1090MHz filter, power amplifier is sent to antenna after processing, to carry out the transmission of answer signal or the 1090ES ADS-B OUT code signal that active generates to data processing module, or
Modulator, the pre-amplifier being connected with modulator, the 1090MHz analog filter being connected with pre-amplifier, the power amplifier being connected with analog filter and antenna selection switch, described modulator is modulated with the 1090MHZ carrier signal that modulation selects signal to provide frequency source according to the PPM of signal processing module output or pcm encoder answer signal, the radiofrequency signal with provisioning information after modulation is sent into pre-amplifier, 1090MHz filter, power amplifier is sent to antenna after processing, to carry out the transmission of the transmission of answer signal or the 1090ES ADS-B OUT code signal that active generates to data processing module,
Described antenna selection switch is used for selecting antenna or lower antenna to send answer signal or 1090ES ADS-B OUT code signal.
9. the S pattern answering machine of the Automatic dependent surveillance broadcast ability with 1090 megahertz expansion texts as claimed in claim 1 or 2, is characterized in that: described antenna adopts omnidirectional antenna.
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|---|---|---|---|
| CN201320851496.4U CN203708241U (en) | 2013-12-21 | 2013-12-21 | Mode-S transponder having 1090 MHz extended message broadcast type automatic correlative monitoring capabilities |
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|---|---|---|---|
| CN201320851496.4U CN203708241U (en) | 2013-12-21 | 2013-12-21 | Mode-S transponder having 1090 MHz extended message broadcast type automatic correlative monitoring capabilities |
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| CN203708241U true CN203708241U (en) | 2014-07-09 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318809A (en) * | 2014-10-11 | 2015-01-28 | 中国电子科技集团公司第二十八研究所 | Portable ADS-B mobile system with 3g function |
| CN105553487A (en) * | 2015-12-10 | 2016-05-04 | 中国航空工业集团公司西安航空计算技术研究所 | Software radio-based airborne navigation and communication processing module |
| CN108021060A (en) * | 2017-11-09 | 2018-05-11 | 中国航空无线电电子研究所 | A kind of ADS-B chips of integrated RF |
| CN108398679A (en) * | 2018-03-01 | 2018-08-14 | 北京众亿锐达科技发展有限公司 | S mode answering machine and its design method based on the reconstruct of avionics comprehensive framework |
| CN111081075A (en) * | 2020-01-19 | 2020-04-28 | 中国民用航空总局第二研究所 | S-mode DAPs data real-time monitoring method and system |
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| 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 |
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| US11038728B1 (en) | 2020-10-01 | 2021-06-15 | Honeywell International Inc. | Demodulating surveillance signals |
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| CN104318809A (en) * | 2014-10-11 | 2015-01-28 | 中国电子科技集团公司第二十八研究所 | Portable ADS-B mobile system with 3g function |
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| CN108021060A (en) * | 2017-11-09 | 2018-05-11 | 中国航空无线电电子研究所 | A kind of ADS-B chips of integrated RF |
| 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 |
| CN108398679A (en) * | 2018-03-01 | 2018-08-14 | 北京众亿锐达科技发展有限公司 | S mode answering machine and its design method based on the reconstruct of avionics comprehensive framework |
| CN111865382B (en) * | 2019-04-26 | 2022-09-02 | 华为技术有限公司 | Signal transmission circuit, signal reception circuit, electronic device, and base station |
| CN111865382A (en) * | 2019-04-26 | 2020-10-30 | 华为技术有限公司 | Signal transmission circuit, signal reception circuit, electronic device, and base station |
| US12040823B2 (en) | 2019-04-26 | 2024-07-16 | Huawei Technologies Co., Ltd. | Signal sending circuit, signal receiving circuit, electronic apparatus, and base station |
| CN111081075A (en) * | 2020-01-19 | 2020-04-28 | 中国民用航空总局第二研究所 | S-mode DAPs data real-time monitoring method and system |
| 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 |
| US11038728B1 (en) | 2020-10-01 | 2021-06-15 | Honeywell International Inc. | Demodulating surveillance signals |
| US11258469B1 (en) | 2020-10-01 | 2022-02-22 | Honeywell International Inc. | Demodulating surveillance signals |
| US11356309B2 (en) | 2020-10-01 | 2022-06-07 | Honeywell International Inc. | Demodulating surveillance signals |
| 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 |
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