CN105978639A - Remote telemetric terminal detection device - Google Patents
Remote telemetric terminal detection device Download PDFInfo
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- CN105978639A CN105978639A CN201610457783.5A CN201610457783A CN105978639A CN 105978639 A CN105978639 A CN 105978639A CN 201610457783 A CN201610457783 A CN 201610457783A CN 105978639 A CN105978639 A CN 105978639A
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- frequency
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
-
- 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
Abstract
The invention discloses a remote telemetric terminal detection device. The device comprises a machine detection module, a ground detection module and a reference clock module, wherein the machine detection module is used for receiving an S-frequency band signal, performing twice down-conversion on the S-frequency band signal to obtain a middle-frequency signal, and performing twice up-conversion on the middle-frequency signal to obtain the first transmission frequency; the ground detection module is used for receiving an L-frequency band signal, performing once down-conversion on the L-frequency band signal to obtain the middle frequency signal, and performing twice up-conversion on the middle-frequency signal to obtain the second transmission frequency; the reference clock module is used for providing a local oscillation signal and a reference clock for the machine detection module and the ground detection module; the machine detection module and the ground detection module are respectively connected with an external omni-directional antenna.
Description
Technical field
The present invention relates to a kind of remote-control romote-sensing terminal detection device.
Background technology
Remote-control romote-sensing terminal detection device is that hand-held detects equipment, and main uses is to provide remote-control romote-sensing detection
Device hardware platform, the most integrated channel module and the integration of signal processing baseband board card, can realize quickly pacifying
Dress and dismounting.
Summary of the invention
It is an object of the invention to provide a kind of remote-control romote-sensing terminal detection device, it is fast that it has the speed of service, surely
Qualitative height, low cost, accuracy advantages of higher.
For solving above-mentioned technical problem, the present invention provides a kind of remote-control romote-sensing terminal detection device, including to machine
Detection module, over the ground detection module and reference clock module；Wherein, it is used for machine testing module receiving S frequency
Segment signal, carries out twice down coversion and obtains intermediate-freuqncy signal, and carry out intermediate-freuqncy signal twice S frequency band signals
Up-conversion obtains the first tranmitting frequency；Detection module is used for receiving L frequency band signals over the ground, to L frequency band signals
Carry out a down coversion and obtain intermediate-freuqncy signal, intermediate-freuqncy signal is carried out twice up-conversion and obtains the second tranmitting frequency；
Reference clock module is for for machine testing module and detection module offer local oscillation signal and reference clock over the ground；
To machine testing module and over the ground detection module be connected with outside omnidirectional antenna respectively.
Further, reference clock module includes crystal oscillator, the first power splitter being connected with crystal oscillator, respectively with
The first attenuator ATT1 and the 11st wave filter BPF11 of one power splitter connection, with the first attenuator ATT1
Connect the second power splitter, and be connected with the second power splitter respectively transmitting one local oscillator, launch two local oscillators
With launch three local oscillators.
Further, machine testing module is included the first pair of power splitter being connected with omnidirectional antenna, be arranged on
The first down-converted between outfan and the input of the first baseband signal processing unit of a pair of power splitter
Unit, and be arranged on the outfan of the first baseband signal processing unit and first pair of power splitter input it
Between the first upconversion process unit；Reference clock module respectively with in the first frequency conversion processing unit and first
Frequency-conversion processing unit connects.
The first low-noise amplifier LNA1 that further, the first frequency conversion processing unit includes being sequentially connected with,
First image-reject filter, the first frequency mixer UM1, the first wave filter BPF1, the first magnetic amplifier AM1,
Second wave filter BPF2, the second frequency mixer UM2, the 3rd wave filter BPF3 and the first automatic growth control are put
Big device AGC1；The input of the first low-noise amplifier LNA1 is connected with the outfan of first duplexer；The
The outfan of one automatic gain control amplifier AGC1 is connected to the input of the first baseband signal processing unit
Connect；The outfan launching a local oscillator is connected to the first frequency mixer UM1 by first frequency synthesizer PLL1
The second input, the outfan launching three local oscillators is connected to the second mixing by second frequency synthesizer PLL2
Second input of device UM2.
Further, the first upconversion process unit includes the 4th frequency mixer UM4, the 4th filter being sequentially connected with
Ripple device BPF4, the second magnetic amplifier AM2, three-mixer UM3, the 5th wave filter BPF5, the 4th magnetic
Amplifier AM4 and the first power amplifier PA1 and the first isolator；First baseband signal processing unit defeated
Go out end to be connected with the first input end of the 4th frequency mixer UM4, the outfan of the first isolator and first duplexer
Input connect；The outfan launching two local oscillators is connected to the 3rd mixing by the 3rd frequency synthesizer PLL3
Second input of device UM3, the outfan launching three local oscillators is connected to by the 4th frequency synthesizer PLL4
Second input of the 4th frequency mixer UM4.
Further, detection module includes the second pair of power splitter being connected with omnidirectional antenna over the ground, is arranged on
The second down-converted between outfan and the input of the second baseband signal processing unit of two pairs of power splitters
Unit, and be arranged on the outfan of the second baseband signal processing unit and second pair of power splitter input it
Between the second upconversion process unit；Reference clock module respectively with in the second frequency conversion processing unit and second
Frequency-conversion processing unit connects.
The second low-noise amplifier LNA2 that further, the second frequency conversion processing unit includes being sequentially connected with,
Second image-reject filter, the 5th frequency mixer UM5, the 6th wave filter BPF6, the 5th magnetic amplifier AM5,
7th wave filter BPF7, the 8th wave filter BPF8 and the second automatic gain control amplifier AGC2；Second
The input of low-noise amplifier LNA2 and the outfan of the second duplexer connect；Second automatic growth control
The outfan of amplifier AGC2 is connected to the input of the second baseband signal processing unit and connects；Launch one
The outfan shaken is connected to second input of the 5th frequency mixer UM5 by the 5th frequency synthesizer PLL5.
Further, the second upconversion process unit includes the 7th frequency mixer UM7, the 9th filter being sequentially connected with
Ripple device BPF9, the 6th magnetic amplifier AM6, the 6th frequency mixer UM6, the tenth wave filter BPF10, the 7th
Magnetic amplifier AM7 and the second power amplifier PA2 and the second isolator；Second baseband signal processing unit
The first input end of outfan and the 7th frequency mixer UM7 connects, the outfan of the second isolator and the second duplex
The input of device connects；Launch the outfan of two local oscillators to be connected to the 7th by the 7th frequency synthesizer PLL7 and mix
Frequently second input of device UM7, the outfan launching three local oscillators is connected by the 6th frequency synthesizer PLL6
The second input to the 6th frequency mixer UM6.
Further, the 8th frequency synthesizer PLL8, the 12nd filtering that a local oscillator includes being sequentially connected with are launched
Device BPF12 and the 8th magnetic amplifier AM8, the input of the 8th frequency synthesizer PLL8 and the second power splitter
First outfan connect；Launch the 9th frequency synthesizer PLL9 that two local oscillators include being sequentially connected with, the 13rd
Wave filter BPF13 and the 9th magnetic amplifier AM9, the input of the 9th frequency synthesizer PLL9 and the second merit
The second outfan dividing device connects；Launch the second attenuator ATT2, the tenth magnetic that three local oscillators include being sequentially connected with
Amplifier AM10, the first doubler FM1, the 14th wave filter BPF14 and the 11st magnetic amplifier AM11,
The outfan of the second attenuator ATT2 and three outfans of the second power splitter connect.
Further, detection equipment also include respectively with to machine testing module and detection module is connected over the ground hands
Hold formula controller.
The invention have the benefit that this detection equipment has the speed of service fast, stability is high, low cost,
Accuracy advantages of higher, and its safety is high, highly reliable, radio frequency path and low-frequency channel are reasonable in design,
Meet " three change " requirement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the detection module over the ground of one embodiment of the invention；
Fig. 2 is the schematic diagram of the detection module over the ground of one embodiment of the invention；
Fig. 3 is the schematic diagram of the reference clock module of one embodiment of the invention；
Fig. 4 is the schematic diagram of remote-control romote-sensing terminal detection device.
Detailed description of the invention
Below the detailed description of the invention of the present invention is described, in order to those skilled in the art manage
Solve the present invention, it should be apparent that the invention is not restricted to the scope of detailed description of the invention, to the art
From the point of view of those of ordinary skill, if the essence of the present invention that various change limits in appended claim and determines
In god and scope, these changes are apparent from, and all utilize the innovation and creation of present inventive concept all protecting
The row protected.
The application provides a kind of remote-control romote-sensing terminal detection device, including to machine testing module, detects mould over the ground
Block, and respectively with to machine testing module and detection module is connected over the ground reference clock module and hand-held control
Device processed；Below all modules in equipment is described in detail:
Wherein, the reference clock module used in the application is 100MHz reference clock, for for machine examination
Survey module and over the ground detection module provide local oscillation signal and reference clock.Reference clock module includes crystal oscillator, with
The first power splitter that crystal oscillator connects, the first attenuator ATT1 being connected with the first power splitter respectively and the 11st filter
Ripple device BPF11, the second power splitter being connected with the first attenuator ATT1, and respectively with the second power splitter phase
Connect transmitting one local oscillator, launch two local oscillators and launch three local oscillators.
More specifically, launch the 8th frequency synthesizer PLL8, the 12nd filtering that a local oscillator includes being sequentially connected with
Device BPF12 and the 8th magnetic amplifier AM8, the input of the 8th frequency synthesizer PLL8 and the second power splitter
First outfan connect；Launch the 9th frequency synthesizer PLL9 that two local oscillators include being sequentially connected with, the 13rd
Wave filter BPF13 and the 9th magnetic amplifier AM9, the input of the 9th frequency synthesizer PLL9 and the second merit
The second outfan dividing device connects；Launch the second attenuator ATT2, the tenth magnetic that three local oscillators include being sequentially connected with
Amplifier AM10, the first doubler FM1, the 14th wave filter BPF14 and the 11st magnetic amplifier AM11,
The outfan of the second attenuator ATT2 and three outfans of the second power splitter connect.
Crystal oscillator is as the reference source of reference clock module, and the frequency of oscillation that crystal oscillator produces is by the first power splitter merit
Being divided into two-way, the reference clock of road a 11st wave filter BPF11 output 100MHz, another road is through declining
Subtract device decay, be divided into three tunnel inputs to launch channel by the second power splitter after the 3rd noise amplifier amplifies.Its
In, launch channel and be divided into transmitting one local oscillator, launch two local oscillators and launch three local oscillators.
Aforementioned it is used for receiving S frequency band signals to machine testing module, S frequency band signals is carried out twice down coversion and obtains
To intermediate-freuqncy signal, and intermediate-freuqncy signal is carried out twice up-conversion obtain the first tranmitting frequency.To machine testing module
Including the first pair of power splitter being connected with omnidirectional antenna, it is arranged on outfan and first base of first pair of power splitter
The first frequency conversion processing unit between the input of band signal processing unit, and it is arranged on the first base band letter
The first upconversion process unit between outfan and the input of first pair of power splitter of number processing unit.And
And, reference clock module is connected with the first frequency conversion processing unit and the first upconversion process unit respectively.
Wherein, the first frequency conversion processing unit includes being sequentially connected with the first low-noise amplifier LNA1, first
Image-reject filter, the first frequency mixer UM1, the first wave filter BPF1, the first magnetic amplifier AM1,
Second wave filter BPF2, the second frequency mixer UM2, the 3rd wave filter BPF3 and the first automatic growth control are put
Big device AGC1；The input of the first low-noise amplifier LNA1 is connected with the outfan of first duplexer；The
The outfan of one automatic gain control amplifier AGC1 is connected to the input of the first baseband signal processing unit
Connect；The outfan launching a local oscillator is connected to the first frequency mixer UM1 by first frequency synthesizer PLL1
The second input, the outfan launching three local oscillators is connected to the second mixing by second frequency synthesizer PLL2
Second input of device UM2.Wherein, the first image-reject filter uses broadband filter, its bandwidth
Degree is 220MHz；The bandwidth of the first wave filter BPF1 and the second wave filter BPF2 is 20MHz.
In work process, the reception frequency (2200.5MHz～2400.5MHz) that first duplexer will receive
After the first low-noise amplifier LNA1 with launch one local oscillator output frequency hopping local oscillator (1830.5MHz～
2030.5MHz (2MHz stepping)) mixing after export IF-FRE 370MHz；The filtered process of IF-FRE
Fixed intermediate frequency 70MHz is exported, finally after being mixed with the fixing local oscillator (300MHz) launching three local oscillator outputs afterwards
Launch to the first baseband signal processing unit after filtered amplification.
The 4th frequency mixer UM4 that first upconversion process unit includes being sequentially connected with, the 4th wave filter BPF4,
Second magnetic amplifier AM2, three-mixer UM3, the 5th wave filter BPF5, the 4th magnetic amplifier AM4
With the first power amplifier PA1 and the first isolator；The outfan of the first baseband signal processing unit and the 4th
The first input end of frequency mixer UM4 connects, and the outfan of the first isolator connects with the input of first duplexer
Connect；The outfan launching two local oscillators is connected to three-mixer UM3's by the 3rd frequency synthesizer PLL3
Second input, the outfan launching three local oscillators is connected to the 4th frequency mixer by the 4th frequency synthesizer PLL4
Second input of UM4.Wherein, the second image-reject filter uses broadband filter, its bandwidth
For 220MHz；The bandwidth of the 6th wave filter BPF6, the 7th wave filter BPF7 and the 8th filtering is 20
MHz。
In work process, the 4th frequency mixer UM4 is by the output frequency of the first baseband signal processing unit and transmitting
Exporting fixed intermediate frequency 70MHz after fixing local oscillator (300MHz) mixing of three local oscillator outputs, fixed intermediate frequency is through filter
Ripple exports after being mixed with the frequency hopping local oscillator (1380.5MHz～1480.5MHz) launching two local oscillator outputs after amplifying
IF-FRE 370MHz, last filtered amplification is launched to first duplexer via isolator.First isolator
Scratch for ensureing that the transceiver channel to machine testing module is the most dry.
Detection module is used for receiving L frequency band signals over the ground, carries out L frequency band signals during down coversion obtains
Frequently signal, carries out twice up-conversion and obtains the second tranmitting frequency intermediate-freuqncy signal.Over the ground detection module include with
Second pair of power splitter that omnidirectional antenna connects, is arranged on outfan and second baseband signal of second pair of power splitter
The second frequency conversion processing unit between the input of processing unit, and it is arranged on the second base band signal process
The second upconversion process unit between the input of the outfan of unit and second pair of power splitter；Reference clock
Module is connected with the second frequency conversion processing unit and the second upconversion process unit respectively.
Second frequency conversion processing unit includes that the second low-noise amplifier LNA2 being sequentially connected with, the second mirror image press down
Wave filter processed, the 5th frequency mixer UM5, the 6th wave filter BPF6, the 5th magnetic amplifier AM5, the 7th filter
Ripple device BPF7, the 8th wave filter BPF8 and the second automatic gain control amplifier AGC2；Second low noise
The input of amplifier LNA2 and the outfan of the second duplexer connect；Second automatic gain control amplifier
The outfan of AGC2 is connected to the input of the second baseband signal processing unit and connects；Launch the output of a local oscillator
End is connected to second input of the 5th frequency mixer UM5 by the 5th frequency synthesizer PLL5.
In work process, the reception frequency (1750.5MHz～1850.5MHz) that the second duplexer will receive
After the second low-noise amplifier LNA2 with launch two local oscillators output frequency hopping local oscillator (1680.5MHz～
1780.5MHz (2MHz stepping)) mixing after export IF-FRE 70MHz；The filtered process of IF-FRE
Rear transmitting is to the first baseband signal processing unit.
The 7th frequency mixer UM7 that second upconversion process unit includes being sequentially connected with, the 9th wave filter BPF9,
6th magnetic amplifier AM6, the 6th frequency mixer UM6, the tenth wave filter BPF10, the 7th magnetic amplifier AM7
With the second power amplifier PA2 and the second isolator；The outfan of the second baseband signal processing unit and the 7th
The first input end of frequency mixer UM7 connects, and the outfan of the second isolator and the input of the second duplexer are even
Connect；The outfan launching two local oscillators is connected to the 7th frequency mixer UM7's by the 7th frequency synthesizer PLL7
Second input, the outfan launching three local oscillators is connected to the 6th frequency mixer by the 6th frequency synthesizer PLL6
Second input of UM6.
This detection equipment is the design of twin stack formula, and upper strata is handheld computer, mainly realizes channel
Control processes, and realizes outer control simultaneously.Lower floor is channel and baseband portion, is divided into and detects channel/base over the ground
Band with to machine testing channel/base band, over the ground detection channel with machine testing channel detected over the ground with outside respectively and
Machine testing omnidirectional antenna is connected.The built-in rechargeable lithium batteries of equipment, external AC220V turns DC19V charging
Formula power supply adaptor.
In sum, the safety of this detection equipment is high, highly reliable, and its all technical all can meet
Requiring and reliable and stable, radio frequency path and low-frequency channel are reasonable in design, meet " three change " requirement.
Claims (10)
1. a remote-control romote-sensing terminal detection device, it is characterised in that include
To machine testing module, it is used for receiving S frequency band signals, described S frequency band signals is carried out twice down coversion
Obtain intermediate-freuqncy signal, and described intermediate-freuqncy signal is carried out twice up-conversion obtain the first tranmitting frequency；
Detection module over the ground, is used for receiving L frequency band signals, and described L frequency band signals is carried out a down coversion
Obtain intermediate-freuqncy signal, described intermediate-freuqncy signal is carried out twice up-conversion and obtains the second tranmitting frequency；And
Reference clock module, for for machine testing module and detection module offer local oscillation signal and reference over the ground
Clock；
Described machine testing module and described detection module over the ground are connected with outside omnidirectional antenna respectively.
Remote-control romote-sensing terminal detection device the most according to claim 1, it is characterised in that described reference
Clock module includes crystal oscillator, the first power splitter being connected with described crystal oscillator, respectively with described first power splitter even
The the first attenuator ATT1 connect and the 11st wave filter BPF11, is connected with described first attenuator ATT1
Second power splitter, and be connected with described second power splitter respectively transmitting one local oscillator, launch two local oscillators and
Launch three local oscillators.
Remote-control romote-sensing terminal detection device the most according to claim 2, it is characterised in that described to machine
Detection module includes the first pair of power splitter being connected with omnidirectional antenna, is arranged on the defeated of described first pair of power splitter
Go out the first frequency conversion processing unit between end and the input of the first baseband signal processing unit, and arrange
On between the outfan and the input of first pair of power splitter of described first baseband signal processing unit first
Frequency-conversion processing unit；Described reference clock module becomes with in described first frequency conversion processing unit and first respectively
Frequently processing unit connects.
Remote-control romote-sensing terminal detection device the most according to claim 3, it is characterised in that described first
Frequency conversion processing unit includes the first low-noise amplifier LNA1, the first mirror image suppression filtering being sequentially connected with
Device, the first frequency mixer UM1, the first wave filter BPF1, the first magnetic amplifier AM1, the second wave filter BPF2,
Second frequency mixer UM2, the 3rd wave filter BPF3 and the first automatic gain control amplifier AGC1；Described
The input of the first low-noise amplifier LNA1 is connected with the outfan of described first duplexer；Described first
The outfan of automatic gain control amplifier AGC1 is connected to the input of described first baseband signal processing unit
End connects；The outfan of described transmitting one local oscillator is connected to the first frequency mixer by first frequency synthesizer PLL1
Second input of UM1, the outfan of described transmitting three local oscillator is connected by second frequency synthesizer PLL2
The second input to the second frequency mixer UM2.
Remote-control romote-sensing terminal detection device the most according to claim 4, it is characterised in that described first
Upconversion process unit includes that the 4th frequency mixer UM4 being sequentially connected with, the 4th wave filter BPF4, the second magnetic are put
Big device AM2, three-mixer UM3, the 5th wave filter BPF5, the 4th magnetic amplifier AM4 and the first merit
Rate amplifier PA1 and the first isolator；The outfan of described first baseband signal processing unit and the 4th mixing
The first input end of device UM4 connects, the outfan of described first isolator and the input of described first duplexer
End connects；The outfan of described transmitting two local oscillator is connected to three-mixer by the 3rd frequency synthesizer PLL3
Second input of UM3, the outfan of described transmitting three local oscillator is connected by the 4th frequency synthesizer PLL4
The second input to the 4th frequency mixer UM4.
Remote-control romote-sensing terminal detection device the most according to claim 2, it is characterised in that described over the ground
Detection module includes the second pair of power splitter being connected with omnidirectional antenna, is arranged on the defeated of described second pair of power splitter
Go out the second frequency conversion processing unit between end and the input of the second baseband signal processing unit, and arrange
On between the outfan and the input of second pair of power splitter of described second baseband signal processing unit second
Frequency-conversion processing unit；Described reference clock module becomes with in described second frequency conversion processing unit and second respectively
Frequently processing unit connects.
Remote-control romote-sensing terminal detection device the most according to claim 6, it is characterised in that described second
Frequency conversion processing unit includes the second low-noise amplifier LNA2, the second mirror image suppression filtering being sequentially connected with
Device, the 5th frequency mixer UM5, the 6th wave filter BPF6, the 5th magnetic amplifier AM5, the 7th wave filter BPF7,
8th wave filter BPF8 and the second automatic gain control amplifier AGC2；Described second low-noise amplifier
The input of LNA2 is connected with the outfan of described second duplexer；Described second automatic gain control amplifier
The outfan of AGC2 is connected to the input of described second baseband signal processing unit and connects；Described transmitting one
The outfan shaken is connected to second input of the 5th frequency mixer UM5 by the 5th frequency synthesizer PLL5.
Remote-control romote-sensing terminal detection device the most according to claim 7, it is characterised in that described second
Upconversion process unit includes that the 7th frequency mixer UM7 being sequentially connected with, the 9th wave filter BPF9, the 6th magnetic are put
Big device AM6, the 6th frequency mixer UM6, the tenth wave filter BPF10, the 7th magnetic amplifier AM7 and second
Power amplifier PA2 and the second isolator；The outfan of described second baseband signal processing unit and the 7th mixes
Frequently the first input end of device UM7 connects, and the outfan of described second isolator is defeated with described second duplexer
Enter end to connect；The outfan of described transmitting two local oscillator is connected to the 7th mixing by the 7th frequency synthesizer PLL7
Second input of device UM7, the outfan of described transmitting three local oscillator is by the 6th frequency synthesizer PLL6 even
It is connected to second input of the 6th frequency mixer UM6.
Remote-control romote-sensing terminal detection device the most according to claim 2, it is characterised in that described transmitting
One local oscillator includes that the 8th frequency synthesizer PLL8, the 12nd wave filter BPF12 and the 8th magnetic that are sequentially connected with are put
Big device AM8, the input of described 8th frequency synthesizer PLL8 exports with the first of described second power splitter
End connects；Described transmitting two local oscillator includes the 9th frequency synthesizer PLL9, the 13rd wave filter being sequentially connected with
BPF13 and the 9th magnetic amplifier AM9, the input and described second of described 9th frequency synthesizer PLL9
Second outfan of power splitter connects；The second attenuator ATT2 that described transmitting three local oscillator includes being sequentially connected with,
Tenth magnetic amplifier AM10, the first doubler FM1, the 14th wave filter BPF14 and the 11st magnetic amplify
Device AM11, the outfan of described second attenuator ATT2 is connected with three outfans of described second power splitter.
Remote-control romote-sensing terminal detection device the most according to claim 1, it is characterised in that described inspection
Measurement equipment also include respectively with described to machine testing module with detection module is connected over the ground hand-held controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457783.5A CN105978639A (en) | 2016-06-21 | 2016-06-21 | Remote telemetric terminal detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457783.5A CN105978639A (en) | 2016-06-21 | 2016-06-21 | Remote telemetric terminal detection device |
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| CN105978639A true CN105978639A (en) | 2016-09-28 |
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ID=57021561
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| CN201610457783.5A Pending CN105978639A (en) | 2016-06-21 | 2016-06-21 | Remote telemetric terminal detection device |
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| CN108322273A (en) * | 2018-01-10 | 2018-07-24 | 北京哨兵科技有限公司 | Flight data-link ground checkout equipment |
| CN108322273B (en) * | 2018-01-10 | 2020-11-10 | 北京哨兵科技有限公司 | Ground test equipment for flight data chain |
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