CN108023600A - Based on time-multiplexed airborne collision avoidance system receiving channel emerging system - Google Patents
Based on time-multiplexed airborne collision avoidance system receiving channel emerging system Download PDFInfo
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- CN108023600A CN108023600A CN201711131999.3A CN201711131999A CN108023600A CN 108023600 A CN108023600 A CN 108023600A CN 201711131999 A CN201711131999 A CN 201711131999A CN 108023600 A CN108023600 A CN 108023600A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
- H04B1/0082—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands with a common local oscillator for more than one band
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Abstract
The invention discloses one kind to be based on time-multiplexed airborne collision avoidance system receiving channel emerging system, comprising signal selecting switch network, four-way 1030MHz/1090MHz multi-mode receivers and the real-time dynamic allocation scheme module of receiving channel is received, the real-time dynamic allocation scheme module control of receiving channel receives signal selecting switch network and receives 4 road 1090MHz or 2 road 1090MHz, the radiofrequency signal of 2 road 1030MHz；Control four-way 1030MHz/1090MHz multi-mode receivers complete 4 road 1090MHz or 2 road 1090MHz, 2 road 1030MHz radiofrequency signal frequency-conversion processing.Tetra- tunnel receiving channels of Jin Xu of the present invention are that the real-time reception processing of the 8 road 1090MHz blank pipes answer signals and 2 road 1030MHz blank pipe request signals received to antenna port can be achieved, and support the miniaturization of airborne collision avoidance system.
Description
Technical field
The invention belongs to airborne collision avoidance technical field, more particularly to based on time-multiplexed airborne collision avoidance system receiving channel
Emerging system.
Background technology
At present, the anti-collision of Aircraft Air is to grasp flight dynamic by ground blank pipe supervision equipment, by air traffic pipe
System processed allocates flight collision, and in order to avoid midair crash, someone's aircraft is generally also equipped with airborne collision avoidance system (TCAS).This is
System can by the blank pipe data-link such as Mode A/C/S, the cooperation interplane that carrier aircraft is run with it in spatial domain establish it is absolutely empty monitor with
Track link, calculates the relative position between carrier aircraft and its machine in real time, assesses collision risk, and there may be the offer of the scene of collision
The evasion manoeuvre suggestion cooperateed with other side.Meanwhile also can be in carrier aircraft and ground by the blank pipe data-link such as Mode A/C/S, the product
Air-ground surveillance and tracking link is established between face, meets real-time monitoring demand of the air traffic control unit to carrier aircraft.
To realize above-mentioned function, TCAS systems need to be provided simultaneously with the reception processing of blank pipe request signal, blank pipe answer signal
Ability.Wherein, the reception processing of blank pipe answer signal refers to orient L-band Unit four upper antenna and L-band Unit four orientation
Its machine 1090MHz radiofrequency signal of the eight tunnel spatial domains that lower antenna receives is carried out at the same time switch selection, filtering, down coversion, logarithm are put
It is big wait processing, the four road amplitude informations and four road coherents of its machine blank pipe answer signal of spatial domain are provided for back-end digital processing module
Phase information, supports it to carry out the digital process such as demodulation to its machine blank pipe answer signal of spatial domain, decoding, ranging, phase demodulation；
The reception of blank pipe request signal handles the two-way spatial domain referred to antenna receives under antenna in L-band omnidirectional and L-band omnidirectional
Its machine 1030MHz radiofrequency signal is carried out at the same time the processing such as filtering, down coversion, logarithmic amplification, is provided for back-end digital processing module
The two-way amplitude information of its machine blank pipe request signal of spatial domain and two-way phase information, support it to carry out and its machine blank pipe of spatial domain are inquired
The digital process such as the demodulation of signal, decoding.
The content of the invention
The goal of the invention of the present invention is to propose a kind of based on time-multiplexed airborne collision avoidance system receiving channel fusion system
System, coordinates broadband filter to add the framework of controlled variable local oscillator, is based on by digital end to sky using controlled passage selecting switch
Pipe response message, blank pipe inquiry message receive the channel selection switch switching signal of processing feedback, local oscillator switching signal, in real time control
The radiofrequency signal source of each receiving channel access, and the reception processing frequency range of each receiving channel are made, realizes that tetra- tunnels of Jin Xu receive
Passage is the 8 road 1090MHz blank pipes answer signals and 2 road 1030MHz blank pipe request signals that can be achieved to receive antenna port
Real-time reception processing, merged so as to fulfill airborne collision avoidance system answering machine with the hardware of transmitting-receiving host, support airborne collision avoidance system
The miniaturization of system.
The goal of the invention of the present invention is achieved through the following technical solutions：
One kind is based on time-multiplexed airborne collision avoidance system receiving channel emerging system, includes reception signal selecting switch net
Network, four-way 1030MHz/1090MHz multi-mode receivers and the real-time dynamic allocation scheme module of receiving channel；
The real-time dynamic allocation scheme module of receiving channel exports switching signal control to signal selecting switch network is received
System receives signal selecting switch network and orients upper antenna, L-band Unit four orientation lower antenna, L-band omnidirectional from L-band Unit four
4 road 1090MHz responses radiofrequency signals or 2 tunnels are selected in the 10 tunnel radiofrequency signals that antenna exports under upper antenna, L-band omnidirectional
1090MHz responses radiofrequency signal, 2 road 1030MHz inquiry radiofrequency signal input four-way 1030MHz/1090MHz multi-modes receive
Machine；To four-way 1030MHz/1090MHz multi-mode receivers output local frequency control signal control four-way 1030MHz/
1090MHz multi-mode receivers complete 4 road 1090MHz responses radiofrequency signals or 2 road 1090MHz responses radiofrequency signals, 2 tunnels
1030MHz inquires the frequency-conversion processing of radiofrequency signal.
Preferably, receive signal selecting switch network include two the first RF switches, two the second RF switches, two
3rd RF switch；
The input terminal of two the first RF switches respectively connects the upper antenna of 1 L-band Unit four orientation, 1 L-band four
The lower antenna of unit orientation, output terminal connection four-way 1030MHz/1090MHz multi-mode receivers；
Respectively 1 L-band Unit four orients upper antenna, 1 L-band Unit four to the input terminal of two the second RF switches
The lower antenna of orientation, output terminal connect the input terminal of the 3rd RF switch；
The input terminal of one of them the 3rd RF switch is also connected with antenna in L-band omnidirectional, another the 3rd RF switch
Input terminal be also connected with antenna under L-band omnidirectional, two the 3rd RF switch output terminals connection four-way 1030MHz/1090MHz
Multi-mode receiver；
Switching signal includes 1090MHz, and antenna selection switch signal and 1090MHz/1030MHz receive switching up and down
Switching signal；
Antenna selection switch signal controls the first RF switch, the selection of the second RF switch to receive L-band to 1090MHz up and down
The 1090MHz responses radiofrequency signal of the upper antenna output of the orientation of Unit four receives the lower antenna output of L-band Unit four orientation
1090MHz response radiofrequency signals；
1090MHz/1030MHz receives switching switch signal and controls the selection of the 3rd RF switch to receive the second RF switch
Output or the 1030MHz inquiry radiofrequency signals for receiving the output of L-band omnidirectional antenna.
Preferably, four-way 1030MHz/1090MHz multi-mode receivers include two 1090MHz fixed receptions branches,
Two road 1030MHz/1090MHz dynamics receiving branch, first frequency source and second frequency source；
1090MHz fixed receptions branch, 1030MHz/1090MHz dynamics receiving branch include sequentially connected L-band
Broadband filter, L-band low-noise amplifier, L-band frequency mixer, intermediate-frequency filter, IF Logarithmic Amplifier；
First frequency source includes the first phaselocked loop and one-to-two power splitter, and the first phaselocked loop is according to local frequency control signal
Control fixed frequency exported by L-band frequency mixer of the one-to-two power splitter into two 1090MHz fixed reception branches believe
Number；
Second frequency source includes the second phaselocked loop and one-to-two power splitter, and the second phaselocked loop is according to local frequency control signal
Control by L-band frequency mixer from one-to-two power splitter to two 1030MHz/1090MHz dynamic receiving branch output with
The identical signal of the frequency point of first phaselocked loop, or output differ the signal of 60MHz with the frequency point of the first phaselocked loop.
Preferably, switching signal and local frequency control signal control process are as follows：
Step 1：By switching signal two-way is provided for four-way 1030MHz/1090MHz multi-mode receivers
1030MHz inquiries radiofrequency signal, two-way 1090MHz response radiofrequency signals, four-way is controlled by local frequency control signal
Two road 1090MHz fixed receptions branches of 1030MHz/1090MHz multi-mode receivers receive processing 1090MHz responses radio frequency letter
Number, two road 1030MHz/1090MHz dynamics receiving branch receive processing 1030MHz blank pipe request signals.
Step 2：The lead code locking signal in 1090MHz blank pipe answer signal processing procedures is waited, it is leading when receiving
During locking signal, show to receive 1090MHz blank pipe answer signals, be four-way by switching signal at this time
1030MHz/1090MHz multi-mode receivers provide four road 1090MHz response radiofrequency signals, pass through local frequency control signal control
All receiving branch of four-way 1030MHz/1090MHz multi-mode receivers processed receive processing 1090MHz responses radio frequency letter
Number；
Step 3：The direction finding end signal in 1090MHz blank pipe answer signal processing procedures is waited, terminates letter when receiving
Number when, show to have completed the four unit direction findings for docking received 1090MHz blank pipes answer signal, at this time, switching signal with
Local frequency control signal returns to the state of step 1.
Beneficial effect：
By broadband filter plus controlled variable local oscillator, under conditions of single channel receiving channel layout is constant, you can realize
The reception processing of 1090MHz blank pipe answer signals, the reception processing of 1030MHz blank pipe request signals；By time division multiplexing, will connect
Receive port number and be reduced to 4 tunnels by 10 tunnels so that hardware volume is reduced, power consumption is made a price reduction, cost is reduced；By to 4 tunnel receiving channels
Real-time dynamically distributes so that receiving channel quantity reduction under conditions of, can still meet at the same time monitoring distance, monitoring capacity,
Requirement of the performance requirements such as direction finding precision to 1090MHz receiving channels quantity, holding time, and the performance requirement pair such as response rate
The requirement of 1030MHz receiving channel holding times.
Brief description of the drawings
Fig. 1 is the block diagram representation based on time-multiplexed airborne collision avoidance system receiving channel emerging system；
Fig. 2 is the block diagram representation for receiving signal selecting switch network；
Fig. 3 is the block diagram representation of four-way 1030MHz/1090MHz multi-mode receivers.
Embodiment
For a better understanding of the present invention, the present invention is described in further detail below by drawings and examples.
As shown in Figure 1, opened based on time-multiplexed airborne collision avoidance system receiving channel emerging system by reception signal behavior
Close network, four-way 1030MHz/1090MHz multi-mode receivers and the real-time dynamic allocation scheme composition of receiving channel.Its
In, the real-time dynamic allocation scheme of receiving channel can be with the Digital Signal Processing mistake of rear end blank pipe response message, blank pipe inquiry message
Cheng Ronghe, is realized in the FPGA of digital signal processing module.
Receive signal selecting switch network and include two the first RF switches, two the second RF switches, two frequencies three
Penetrate switch；First RF switch, the second RF switch, the 3rd RF switch L-band single-pole double throw RF switch.Two first are penetrated
The input terminal of frequency switch respectively connects the upper antenna of 1 L-band Unit four orientation, the lower antenna of 1 L-band Unit four orientation, defeated
Outlet connects four-way 1030MHz/1090MHz multi-mode receivers.The input terminal of two the second RF switches respectively 1 L
The upper antenna of wave band Unit four orientation, the lower antenna of 1 L-band Unit four orientation, output terminal connect the input terminal of the 3rd RF switch.
The input terminal of one of them the 3rd RF switch is also connected with antenna in L-band omnidirectional, the input terminal of another the 3rd RF switch
Antenna under L-band omnidirectional is also connected with, two the 3rd RF switch output terminal connection four-way 1030MHz/1090MHz multi-modes connect
Receipts machine.
Switching signal includes 1090MHz, and antenna selection switch signal and 1090MHz/1030MHz receive switching up and down
Switching signal, antenna selection switch signal controls the first RF switch, the second RF switch, 1090MHz/ to 1090MHz up and down
1030MHz receives switching switch signal and controls the 3rd RF switch, and control program is as follows：
(1) day line options above and below blank pipe answer signal.Antenna selection switch signal controls the first radio frequency to open to 1090MHz up and down
Close, the second RF switch switches in L-band Unit four orientation under antenna, L-band Unit four orientation between antenna, 1090MHz/
1030MHz receives switching switch signal and controls the 3rd RF switch to receive the output of the 3rd radio frequency, and the first RF switch, the 3rd penetrate
4 road 1090MHz response radiofrequency signals of frequency switch output, which are sent to four-way 1030MHz/1090MHz multi-mode receivers, to be received
Processing.
(2) blank pipe request signal receives selection.Antenna selection switch signal controls the first RF switch to exist to 1090MHz up and down
Switch between the lower antenna of the upper antenna of L-band Unit four orientation, L-band Unit four orientation, 1090MHz/1030MHz receives switching and opens
OFF signal controls the 3rd RF switch to receive the output of L-band omnidirectional antenna, and 2 road 1090MHz of the first RF switch output should
The 2 road 1030MHz inquiries radiofrequency signal for answering radiofrequency signal and the output of the 3rd RF switch is sent to four-way 1030MHz/1090MHz
Multi-mode receiver carries out reception processing.
As shown in figure 3, four-way 1030MHz/1090MHz multi-mode receivers include two 1090MHz fixed reception branch
Road, two road 1030MHz/1090MHz dynamics receiving branch, first frequency source and second frequency source.1090MHz fixed reception branch
Road, 1030MHz/1090MHz dynamics receiving branch include sequentially connected L-band broadband filter, L-band low noise amplification
Device, L-band frequency mixer, intermediate-frequency filter, IF Logarithmic Amplifier.First frequency source includes the first phaselocked loop and one-to-two work(point
Device, the first phaselocked loop is according to the control of local frequency control signal by one-to-two power splitter to two 1090MHz fixed receptions
L-band frequency mixer output fixed frequency signal in branch.Second frequency source includes the second phaselocked loop and one-to-two power splitter, the
Two phaselocked loops are connect according to the control of local frequency control signal by one-to-two power splitter to two 1030MHz/1090MHz dynamics
L-band frequency mixer in revenue and expenditure road exports the signal identical with the frequency point of the first phaselocked loop, or output and the first phaselocked loop
Frequency point differs the signal of 60MHz.
It is as follows to receive processing step：
Step 1：The 4 tunnel radiofrequency signals received are carried out at the same time filtering to handle with low noise amplification.
Step 2：For two-way 1090MHz fixed reception branches, real-time the first lock of dynamic allocation scheme control of receiving channel
Phase ring exports fixed frequency signal, and provides down coversion local oscillator by a two power splitters for two-way receiving branch.
Step 3：For two-way 1090MHz/1030MHz dynamic receiving branch, when the real-time dynamic allocation scheme of receiving channel
When to need four tunnels be 1090MHz receiving branch, the output of the second phaselocked loop of control and the first signal that to lock phase phase frequency point identical, and
By two power splitters of portion down coversion local oscillator is provided for two-way 1090MHz/1030MHz dynamic receiving branch；When receiving channel is real
When dynamic allocation scheme when to need two-way be 1090MHz receiving branch, two-way is 1030MHz receiving branch, the lock phase of control second
Ring exports the signal that 60MHz is differed with the first phaselocked loop frequency point, and is two-way 1090MHz/1030MHz by a two power splitters
Dynamic receiving branch provides down coversion local oscillator.
Step 4：Tetra- tunnel intermediate-freuqncy signals of down coversion Hou are carried out at the same time filtering and are handled with logarithmic amplification.
By the real-time dynamic allocation scheme of receiving channel of the present invention, only can need to carry out 1090MHz blank pipes letter
During number four unit Direction Finding Algorithm, take all four roads receiving branch completely, remaining receiving time have all the time two-way be used for receive work
With its machine 1030MHz request signal that may be present in spatial domain and it is responded in time, so as to meet to monitor scope
On the premise of energy index, the performance requirement of response rate is taken into account.The rate-determining steps of each signal are as follows：
Above and below 1090MHz antenna selection switch signals：
Step 1：When system is in listening state, all its machine transmittings that may be present in whole effect spatial domain need to be received
1090MHz blank pipe broadcast singals, control the periodicity that antenna up and down receives once per second to switch to cover above and below carrier aircraft at this time
Spatial domain.
Step 2：When system is in monitored state, the quality of signal is received for increase, control is ask using with the machine transmitting
Same upper antenna or lower antenna receive the answer signal that its machine of spatial domain returns when asking signal.
1030MHz/1090MHz receives switching switch signal and is used cooperatively with local frequency control signal：
Step 1：The control of switching switch signal is received by 1030MHz/1090MHz and provides two-way 1030MHz skies for rear end
Pipe request signal, two-way 1090MHz blank pipe answer signals.Four-way 1030MHz/ is controlled by local frequency control signal
Two road 1090MHz fixed receptions branches of 1090MHz multi-mode receivers receive processing 1090MHz response radiofrequency signals, two tunnels
1030MHz/1090MHz dynamics receiving branch receives processing 1030MHz inquiry radiofrequency signals.
Step 2：The lead code locking signal in 1090MHz air-control signal processing procedures is waited, when receiving locking signal
When, show to receive 1090MHz blank pipe answer signals.At this time, switching switch signal is received by 1030MHz/1090MHz to control
Four road 1090MHz blank pipe answer signals are provided for rear end, four-way 1030MHz/ is controlled by local frequency control signal
All receiving branch of 1090MHz multi-mode receivers receive processing 1090MHz response radiofrequency signals.
Step 3：The direction finding end signal in 1090MHz air-control signal processing procedures is waited, when receiving end signal,
Show that signal processing algorithm has been completed to dock four unit direction findings of received 1090MHz blank pipes answer signal.At this time, pass through
1030MHz/1090MHz receives switching switch signal, the control of local frequency control signal returns to the state of step 1.
Claims (4)
1. one kind is based on time-multiplexed airborne collision avoidance system receiving channel emerging system, reception signal selecting switch net is included
Network, four-way 1030MHz/1090MHz multi-mode receivers and the real-time dynamic allocation scheme module of receiving channel, its feature
It is：
The real-time dynamic allocation scheme module of receiving channel exports switching signal control to signal selecting switch network is received
System receives signal selecting switch network and orients upper antenna, L-band Unit four orientation lower antenna, L-band omnidirectional from L-band Unit four
4 road 1090MHz responses radiofrequency signals or 2 tunnels are selected in the 10 tunnel radiofrequency signals that antenna exports under upper antenna, L-band omnidirectional
1090MHz responses radiofrequency signal, 2 road 1030MHz inquiry radiofrequency signal input four-way 1030MHz/1090MHz multi-modes receive
Machine；To four-way 1030MHz/1090MHz multi-mode receivers output local frequency control signal control four-way 1030MHz/
1090MHz multi-mode receivers complete 4 road 1090MHz responses radiofrequency signals or 2 road 1090MHz responses radiofrequency signals, 2 tunnels
1030MHz inquires the frequency-conversion processing of radiofrequency signal.
2. a kind of according to claim 1 be based on time-multiplexed airborne collision avoidance system receiving channel emerging system, its feature
It is that receive signal selecting switch network opens comprising two the first RF switches, two the second RF switches, two the 3rd radio frequencies
Close；
The input terminal of two the first RF switches respectively connects the upper antenna of 1 L-band Unit four orientation, 1 L-band Unit four
The lower antenna of orientation, output terminal connection four-way 1030MHz/1090MHz multi-mode receivers；
Respectively the upper antenna of 1 L-band Unit four orientation, 1 L-band Unit four orient the input terminal of two the second RF switches
Lower antenna, output terminal connect the input terminal of the 3rd RF switch；
The input terminal of one of them the 3rd RF switch is also connected with antenna in L-band omnidirectional, another the 3rd RF switch it is defeated
Enter end and be also connected with antenna under L-band omnidirectional, two the 3rd RF switch output terminals connect four-way 1030MHz/1090MHz multimodes
Formula receiver；
The switching signal includes 1090MHz, and antenna selection switch signal and 1090MHz/1030MHz receive switching up and down
Switching signal；
Antenna selection switch signal controls the first RF switch, the selection of the second RF switch to receive the list of L-band four to 1090MHz up and down
The 1090MHz responses radiofrequency signal of the upper antenna output of member orientation or the 1090MHz for receiving the lower antenna output of L-band Unit four orientation
Response radiofrequency signal；
The 1090MHz/1030MHz receives switching switch signal and controls the selection of the 3rd RF switch to receive the second RF switch
Output or the 1030MHz inquiry radiofrequency signals for receiving the output of L-band omnidirectional antenna.
3. a kind of according to claim 1 be based on time-multiplexed airborne collision avoidance system receiving channel emerging system, its feature
It is that four-way 1030MHz/1090MHz multi-mode receivers include two 1090MHz fixed receptions branches, two road 1030MHz/
1090MHz dynamics receiving branch, first frequency source and second frequency source；
The 1090MHz fixed receptions branch, 1030MHz/1090MHz dynamics receiving branch include sequentially connected L-band
Broadband filter, L-band low-noise amplifier, L-band frequency mixer, intermediate-frequency filter, IF Logarithmic Amplifier；
The first frequency source includes the first phaselocked loop and one-to-two power splitter, and the first phaselocked loop is according to local frequency control signal
Control fixed frequency exported by L-band frequency mixer of the one-to-two power splitter into two 1090MHz fixed reception branches believe
Number；
The second frequency source includes the second phaselocked loop and one-to-two power splitter, and the second phaselocked loop is according to local frequency control signal
Control by L-band frequency mixer from one-to-two power splitter to two 1030MHz/1090MHz dynamic receiving branch output with
The identical signal of the frequency point of first phaselocked loop, or output differ the signal of 60MHz with the frequency point of the first phaselocked loop.
4. a kind of according to claim 1 be based on time-multiplexed airborne collision avoidance system receiving channel emerging system, its feature
It is that switching signal and local frequency control signal control process are as follows：
Step 1：By switching signal two-way 1030MHz is provided for four-way 1030MHz/1090MHz multi-mode receivers
Inquire radiofrequency signal, two-way 1090MHz response radiofrequency signals, four-way 1030MHz/ is controlled by local frequency control signal
Two road 1090MHz fixed receptions branches of 1090MHz multi-mode receivers receive processing 1090MHz response radiofrequency signals, two tunnels
1030MHz/1090MHz dynamics receiving branch receives processing 1030MHz blank pipe request signals.
Step 2：The lead code locking signal in 1090MHz blank pipe answer signal processing procedures is waited, when receiving leading locking
During signal, show to receive 1090MHz blank pipe answer signals, be four-way 1030MHz/ by switching signal at this time
1090MHz multi-mode receivers provide four road 1090MHz response radiofrequency signals, and four-way is controlled by local frequency control signal
All receiving branch of 1030MHz/1090MHz multi-mode receivers receive processing 1090MHz response radiofrequency signals；
Step 3：The direction finding end signal in 1090MHz blank pipe answer signal processing procedures is waited, when receiving end signal,
Show to have completed the four unit direction findings for docking received 1090MHz blank pipes answer signal, at this time, switching signal and local oscillator frequency
Rate control signal returns to the state of step 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131999.3A CN108023600B (en) | 2017-11-15 | 2017-11-15 | Airborne collision avoidance system receiving channel fusion system based on time division multiplexing |
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| CN201711131999.3A CN108023600B (en) | 2017-11-15 | 2017-11-15 | Airborne collision avoidance system receiving channel fusion system based on time division multiplexing |
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| CN108023600B CN108023600B (en) | 2020-04-28 |
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|---|---|---|---|---|
| US7436350B1 (en) * | 2004-09-30 | 2008-10-14 | Rockwell Collins, Inc. | Combined aircraft TCAS/transponder with common antenna system |
| CN102780504A (en) * | 2012-07-30 | 2012-11-14 | 四川九洲空管科技有限责任公司 | Airborne collision avoidance system (ACAS) and transponder (XPDR) radio frequency integrated design system |
| CN203352574U (en) * | 2013-07-04 | 2013-12-18 | 四川九洲空管科技有限责任公司 | Radio frequency unit integrated device |
| CN104579413A (en) * | 2015-01-06 | 2015-04-29 | 中电科航空电子有限公司 | TCAS, mode S transponder and ADS-B integrated RF (radio frequency) system |
| CN106527483A (en) * | 2016-12-07 | 2017-03-22 | 中国航空无线电电子研究所 | Unmanned plane active threat avoiding system based on air traffic control data link |
-
2017
- 2017-11-15 CN CN201711131999.3A patent/CN108023600B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7436350B1 (en) * | 2004-09-30 | 2008-10-14 | Rockwell Collins, Inc. | Combined aircraft TCAS/transponder with common antenna system |
| CN102780504A (en) * | 2012-07-30 | 2012-11-14 | 四川九洲空管科技有限责任公司 | Airborne collision avoidance system (ACAS) and transponder (XPDR) radio frequency integrated design system |
| CN203352574U (en) * | 2013-07-04 | 2013-12-18 | 四川九洲空管科技有限责任公司 | Radio frequency unit integrated device |
| CN104579413A (en) * | 2015-01-06 | 2015-04-29 | 中电科航空电子有限公司 | TCAS, mode S transponder and ADS-B integrated RF (radio frequency) system |
| CN106527483A (en) * | 2016-12-07 | 2017-03-22 | 中国航空无线电电子研究所 | Unmanned plane active threat avoiding system based on air traffic control data link |
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| Publication number | Publication date |
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| CN108023600B (en) | 2020-04-28 |
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