CN203720561U - A microwave landing ground equipment antenna simulator - Google Patents
A microwave landing ground equipment antenna simulator Download PDFInfo
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- CN203720561U CN203720561U CN201320861539.7U CN201320861539U CN203720561U CN 203720561 U CN203720561 U CN 203720561U CN 201320861539 U CN201320861539 U CN 201320861539U CN 203720561 U CN203720561 U CN 203720561U
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- 238000004891 communication Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 abstract 3
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- 238000006243 chemical reaction Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 3
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- 238000004088 simulation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
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Abstract
The utility model relates to a microwave landing ground equipment antenna simulator. A circuit of the microwave landing ground equipment antenna simulator is composed of an FPGA, an attenuator, a combiner, a wave detector, an A/D sampling circuit, an inner field angle control circuit, an outer field angle control circuit, a first D/A converting circuit, a second D/A converting circuit, a bus controller, a first phase shifter, a second phase shifter, a third phase shifter and a fourth phase shifter which are connected. An input terminal of the attenuator is externally connected with a microwave landing ground equipment antenna switch. An output terminal of the attenuator is connected with an input terminal of the combiner. An output terminal of the combiner is connected with an input terminal of the A/D sampling circuit after undergoing wave detection by the wave detector. An output terminal of the A/D sampling circuit is connected to an I/O port of the FPGA. The FPGA is provided with three I/O ports which are respectively connected with the first D/A converting circuit, the second D/A converting circuit and the bus controller. The bus controller is separately connected with the first phase shifter, the second phase shifter, the third phase shifter and the fourth phase shifter. The beneficial effects are that the microwave landing ground equipment antenna simulator is applied to tests carried out on microwave landing ground equipment host machines produced by the company in research development and production; and the microwave landing ground equipment antenna simulator has been subjected to application tests; functions are complete; effects are good; the failure rate is low; and a gap in China has been filled.
Description
Technical field
The utility model relates to avionics field, particularly a kind of microwave landing ground device antenna simulator.
Background technology
Microwave landing system (MLS) is the large-scale navigational system of landing for aircraft precision approach, in the military and civilian of the Systems in Certain Developed Countries use of navigating, my army's microwave landing system (MLS) was developed rapidly in recent years, became and ensured that air unit's fighter airplane is fought and the main equipment of training.
Microwave landing system (MLS), is operated in microwave region, adopts time reference beam scanning technology.Its basic functional principle is: MLS uphole equipment is according to strict timing sequence generating needed various " spacing waves ", for the aerial aircraft landing that requires provides angle guiding and data message, airborne equipment is accepted the signal from uphole equipment transmitting, obtain the positional information (position angle of aircraft with respect to runway through processing, the elevation angle etc.), coordinate precision distance measuring equipment, aircraft obtains the three-dimensional coordinate with respect to airport, pilot is according to the instruction of aircraft instrument, independently operating aircraft safe falling, also can deliver to the robot pilot of aircraft, operating aircraft is realized auto-approach and automatic Landing.
Our factory is being produced microwave landing uphole equipment at present, in the time that main frame is debugged and keep in repair, must, on exterior aerial test site, connect scanning antenna, data antenna and outfield antenna, and the complete reflection equipment running status of ability, debugs and keep in repair.So greatly increase test job amount and test duration.Therefore, in order to change the deficiencies in the prior art, need to develop microwave landing ground device antenna simulator, main frame is debugged with maintenance process under in order to be effective prerequisite, reduce test job amount and test duration.
Summary of the invention
The purpose of this utility model is exactly for overcoming the deficiencies in the prior art, the design proposal of a kind of microwave landing ground device antenna simulator is provided, by the innovative design of circuit structure, combined with circuit control flow chart of data processing, realize the various signals that intactly all kinds of antennas of simulated microwave landing uphole equipment feed back, make apparatus function interface complete, angle measurement accuracy≤0.02 °, alternate antenna is carried out the device Host test of microwave landing ground completely.
The utility model is to realize by such technical scheme: a kind of microwave landing ground device antenna simulator, it is characterized in that, its circuit is connected and composed by FPGA, attenuator, combiner, wave detector, A/D sample circuit, internal field angle control circuit, outfield angle control circuit, a D/A change-over circuit, the 2nd D/A change-over circuit, bus controller, phase shifter 1, phase shifter 2, phase shifter 3 and phase shifter 4;
FPGA inside comprises the elevation angle, orientation selection circuit, sequential control circuit, internal field angle waves graphic data circuit, outfield angle waves graphic data circuit, circuit for generating synchronous signals and inefficacy phase shifter signal circuit and communication interface;
The external microwave landing of attenuator input end ground device antenna switch, the output terminal of attenuator connects the input end of combiner, the output terminal of combiner connects A/D sample circuit input end through wave detector detection, and A/D sample circuit output terminal is connected to an I/O port of FPGA;
FPGA has three I/O ports to be connected with a D/A change-over circuit, the 2nd D/A change-over circuit and bus controller respectively; Bus controller is connected with phase shifter 1, phase shifter 2, phase shifter 3 and phase shifter 4 respectively.
The beneficial effects of the utility model are: microwave landing ground device antenna simulator is applied in the test of researching and developing the microwave landing ground device Host of in production, our company being produced and through application test, perfect in shape and function, respond well, failure rate is low, fills the domestic gaps.
Brief description of the drawings
Fig. 1, microwave landing (MLS) System Working Principle block diagram;
Fig. 2, microwave landing ground device antenna simulator theory diagram;
Fig. 3, D/A conversion and filter and amplification theory diagram.
Embodiment
Understand the utility model for clearer, describe in conjunction with the accompanying drawings and embodiments the utility model in detail:
As shown in Figure 1 to Figure 3, microwave landing ground device antenna simulator, its circuit is connected and composed by FPGA, attenuator, combiner, wave detector, A/D sample circuit, internal field angle control circuit, outfield angle control circuit, a D/A change-over circuit, the 2nd D/A change-over circuit, bus controller, phase shifter 1, phase shifter 2, phase shifter 3 and phase shifter 4;
FPGA in antenna simulator, by programming data, produces the selection of the elevation angle, orientation, sequential control, internal field angle waves graphic data, outfield angle waves graphic data, synchronizing signal generation, inefficacy phase shifter signal circuit function;
Come from the transmitter control signal that microwave landing ground device Host produces, control microwave landing ground plant capacity amplifier and produce radiofrequency signal, by microwave landing ground device antenna switch, be connected directly to the attenuator of device antenna simulator inside, microwave landing ground through radio-frequency cable, attenuator carries out attenuation processing to the multi-channel rf signal of being inputted by duplexer, obtains the radiofrequency signal of suitable amplitude;
This multi-channel rf signal enters combiner again by after the mixing of multi-channel rf signal, again through wave detector detection, the vision signal that detection produces, enter again A/D sample circuit, A/D sample circuit carries out A/D conversion, A/D is converted to digital signal and sends into the I/O port of FPGA, for controlling the output amplitude of a D/A change-over circuit outfield angle signal and the 2nd D/A change-over circuit internal field angle signal;
The phase shifter control signal that microwave landing ground device Host produces, after bus controller, is delivered to each phase shifter, and FPGA detects each phase shifter working condition, and the phase shifter quantity of inefficacy is reported to microwave landing ground device Host;
FPGA produces internal field angle signal and outfield angle signal by microwave transmitter control signal, the antenna control signal that ground device Host produces that land in strict accordance with its sequential relationship simulation, delivers to microwave landing ground device Host monitor detect through a D/A change-over circuit, the 2nd D/A change-over circuit after carrying out DA conversion;
Internal field angle control signal in antenna simulator is connected to the I/O port of FPGA; The angle value that internal field angle control signal produces for controlling internal field angle signal.
Outfield angle control signal in antenna simulator is connected to the I/O port of FPGA; The angle value that outfield angle control signal produces for controlling outfield angle signal.
The orientation synchronizing signal that microwave landing ground device Host produces is delivered to after FPGA, after time delay 82us, produces simulation elevation angle synchronous feedback signal by FPGA, delivers to microwave landing ground device Host; For the synchronization control function between simulated microwave landing ground device orientation main frame and elevation angle main frame.
Microwave landing ground device antenna simulator, internal field angle signal and outfield angle signal that simulator produces, its angle is adjustable within the scope of-42 °～+ 42 °, adjusts 0.01 ° of least unit, speed: 39Hz/s, angular accuracy≤± 0.02 ° of the simulating signal of its generation; For detection of microwave landing system (MLS) host supervision device measuring accuracy.
Internal field angle signal and outfield angle signal output amplitude that simulator produces, be subject to the radiofrequency signal amplitude control of being inputted by duplexer, the power amplifier of reflected microwave landing system main frame and duty and the output amplitude of duplexer in real time, for microwave landing system (MLS) host supervision device power detection, accuracy of detection≤± 2 W.
The microwave landing ground device antenna simulator various signals that intactly all kinds of antennas of simulated microwave landing uphole equipment feed back, functional interface is complete, and host test can alternate antenna be carried out completely in angular accuracy≤0.02 ° of simulating signal.
According to the above description, can realize scheme of the present utility model in conjunction with art technology.
Claims (1)
1. a microwave landing ground device antenna simulator, it is characterized in that, its circuit is connected and composed by FPGA, attenuator, combiner, wave detector, A/D sample circuit, internal field angle control circuit, outfield angle control circuit, a D/A change-over circuit, the 2nd D/A change-over circuit, bus controller, phase shifter 1, phase shifter 2, phase shifter 3 and phase shifter 4;
FPGA inside comprises the elevation angle, orientation selection circuit, sequential control circuit, internal field angle waves graphic data circuit, outfield angle waves graphic data circuit, circuit for generating synchronous signals and inefficacy phase shifter signal circuit and communication interface;
The external microwave landing of attenuator input end ground device antenna switch, the output terminal of attenuator connects the input end of combiner, the output terminal of combiner connects A/D sample circuit input end through wave detector detection, and A/D sample circuit output terminal is connected to an I/O port of FPGA;
FPGA has two I/O ports to be connected with internal field angle control circuit, outfield angle control circuit respectively;
FPGA has three I/O ports to be connected with a D/A change-over circuit, the 2nd D/A change-over circuit and bus controller respectively; Bus controller is connected with phase shifter 1, phase shifter 2, phase shifter 3 and phase shifter 4 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861539.7U CN203720561U (en) | 2013-12-17 | 2013-12-17 | A microwave landing ground equipment antenna simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861539.7U CN203720561U (en) | 2013-12-17 | 2013-12-17 | A microwave landing ground equipment antenna simulator |
Publications (1)
| Publication Number | Publication Date |
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| CN203720561U true CN203720561U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320861539.7U Expired - Lifetime CN203720561U (en) | 2013-12-17 | 2013-12-17 | A microwave landing ground equipment antenna simulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507650A (en) * | 2018-11-07 | 2019-03-22 | 中电科仪器仪表有限公司 | A kind of microwave lands digital multipath interference signal analogy method and system |
| CN110456655A (en) * | 2019-06-29 | 2019-11-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Microwave landing analogue simulation system |
-
2013
- 2013-12-17 CN CN201320861539.7U patent/CN203720561U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507650A (en) * | 2018-11-07 | 2019-03-22 | 中电科仪器仪表有限公司 | A kind of microwave lands digital multipath interference signal analogy method and system |
| CN110456655A (en) * | 2019-06-29 | 2019-11-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Microwave landing analogue simulation system |
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Granted publication date: 20140716 |
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| CX01 | Expiry of patent term |