A radio compass signal analysis device
By designing a radio compass signal analysis device and using sine and cosine test signals for automatic demodulation analysis, the problem of low detection efficiency of radio compass simulators was solved, and efficient and rapid measurement was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINESE PEOPLES LIBERATION ARMY UNIT 92574
- Filing Date
- 2025-09-05
- Publication Date
- 2026-07-07
AI Technical Summary
The lack of rapid and dedicated metrological testing equipment in the existing technology results in low testing efficiency for radio compass simulators.
A radio compass signal analysis device is provided, including a front panel interface, an intermediate frequency signal transceiver module, and a zero-slot controller. It generates sine and cosine test signals for automatic demodulation and analysis, thereby enabling rapid measurement of the radio compass simulator.
The detection efficiency of the radio compass simulator has been improved, enabling highly automated and rapid measurement.
Smart Images
Figure CN224471061U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radio compass signal analysis technology, specifically to a radio compass signal analysis device. Background Technology
[0002] A radio compass is a ground-based orientation system that uses an airborne orientation instrument to automatically determine the direction of incoming radio waves from a ground transmitter, thereby obtaining the aircraft's angular coordinate bearing data relative to the beacon. The system consists of two parts: airborne and ground equipment. The core component of the airborne part is the compass receiver.
[0003] Currently, airports lack rapid and dedicated metrological testing equipment for the compass navigation simulators used for ground testing of airborne compass receivers. Traditional radio compass simulator metrology requires manual testing using multiple sets of independent instruments, resulting in low testing efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a radio compass signal analysis device to solve at least one of the above-mentioned technical problems.
[0005] In a first aspect, this utility model provides a radio compass signal analysis device, comprising: a front panel interface, an intermediate frequency signal transceiver module, and a zero-slot controller; wherein, the front panel interface includes a first output interface, a second output interface, a compass RF input interface, and a display screen; the intermediate frequency signal transceiver module includes a sine signal generation unit, a cosine signal generation unit, and a resolution unit; the output terminal of the sine signal generation unit is connected to the first output interface, the output terminal of the cosine signal generation unit is connected to the second output interface, the first output interface and the second output interface are connected to the signal input terminal of a radio compass simulator under test, the signal output terminal of the radio compass simulator under test is connected to the compass RF input interface, the compass RF input interface is also connected to the input terminal of the resolution unit, and the output terminal of the resolution unit is connected to the zero-slot controller; the sine signal generation unit and the cosine signal generation unit are respectively used to generate a sine test signal and a cosine test signal; the resolution unit is used to resolve the response signal of the radio compass simulator under test to obtain the signal delay; the zero-slot controller is used to send the signal delay to the display screen.
[0006] Optionally, it also includes a PXle backplane, on which both the intermediate frequency signal transceiver module and the zero-slot controller are mounted.
[0007] Optionally, the zero-slot controller is connected to the display screen via a DP interface.
[0008] Optionally, the cosine signal generating unit includes: a first DDS chip, a first gain controller, and a first digital-to-analog converter; wherein, the first DDS chip is connected to the first digital-to-analog converter through the first gain controller, and the output terminal of the first digital-to-analog converter is connected to the second output interface; the first DDS chip is used to generate a cosine digital signal; the first digital-to-analog converter is used to convert the cosine digital signal into a cosine analog signal, and use the cosine analog signal as the cosine test signal.
[0009] Optionally, the sinusoidal signal generating unit includes: a second DDS chip, a phase controller, a second gain controller, and a second digital-to-analog converter; wherein, the second DDS chip is connected to the second digital-to-analog converter through the phase controller and the second gain controller, and the output terminal of the second digital-to-analog converter is connected to the first output interface; the second DDS chip is used to generate a sinusoidal digital signal; the phase controller is used to control the phase shift of the sinusoidal digital signal according to a preset period; the second digital-to-analog converter is used to convert the sinusoidal digital signal into a sinusoidal analog signal, and use the sinusoidal analog signal as the sinusoidal test signal.
[0010] Optionally, the analysis unit includes an analog-to-digital converter, an envelope detector circuit, a low-pass filter, and a phase comparator; wherein, the compass RF input interface is connected to the input terminal of the analog-to-digital converter, the output terminal of the analog-to-digital converter is connected to the input terminal of the envelope detector circuit, the output terminal of the envelope detector circuit is connected to the low-pass filter, the low-pass filter and the phase controller are simultaneously connected to the input terminal of the phase comparator, and the output terminal of the phase comparator is connected to the zero-slot controller.
[0011] This invention provides a radio compass signal analysis device that uses radio technology to control a PXI chassis and an intermediate frequency signal transceiver module to automatically and quickly demodulate and analyze standard radio compass signals, thereby completing rapid measurement of the radio compass simulator. It has a high degree of automation and alleviates the technical problem of low detection efficiency in traditional manual detection methods. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0013] Figure 1A schematic diagram of the hardware structure of a radio compass signal analysis device provided in this embodiment of the present invention;
[0014] Figure 2 This is a schematic diagram of the architecture of an intermediate frequency signal transceiver module provided in an embodiment of the present utility model.
[0015] In the diagram: 10. Front panel interface; 11. First output interface; 12. Second output interface; 13. Compass RF input interface; 14. Display screen; 20. Intermediate frequency signal transceiver module; 21. Sine wave signal generator unit; 211. Second DDS chip; 212. Phase controller; 213. Second gain controller; 214. Second digital-to-analog converter; 22. Cosine wave signal generator unit; 221. First DDS chip; 222. First gain controller; 223. First digital-to-analog converter; 23. Resolution unit; 231. Analog-to-digital converter; 232. Envelope detector circuit; 233. Low-pass filter; 234. Phase comparator; 30. Zero slot controller; 40. PXle backplane. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Figure 1 This is a schematic diagram of the hardware structure of a radio compass signal analysis device according to an embodiment of the present invention. Figure 1 As shown, it includes: a front panel interface 10, an intermediate frequency signal transceiver module 20, and a zero-slot controller 30; wherein, the front panel interface 10 includes a first output interface 11, a second output interface 12, a compass RF input interface 13, and a display screen 14. The intermediate frequency signal transceiver module 20 includes a sine signal generation unit 21, a cosine signal generation unit 22, and a resolution unit 23.
[0018] Specifically, the output of the sine signal generating unit 21 is connected to the first output interface 11, the output of the cosine signal generating unit 22 is connected to the second output interface 12, the first output interface 11 and the second output interface 12 are connected to the signal input of the radio compass simulator under test, the signal output of the radio compass simulator under test is connected to the compass RF input interface 13, the compass RF input interface 13 is also connected to the input of the analysis unit 23, and the output of the analysis unit 23 is connected to the zero slot controller 30.
[0019] Specifically, the sine signal generating unit 21 and the cosine signal generating unit 22 are used to generate sine test signals and cosine test signals, respectively;
[0020] Analysis unit 23 is used to analyze the response signal of the radio compass simulator under test to obtain the signal delay;
[0021] Zero-slot controller 30 is used to send signals to display screen 14 with a delay.
[0022] Specifically, such as Figure 1 As shown, it also includes a PXle backplane 40, an intermediate frequency signal transceiver module 20 and a zero slot controller 30, all of which are mounted on the PXle backplane 40.
[0023] Preferably, the zero-slot controller 30 is connected to the display screen 14 via a DP interface.
[0024] Specifically, the intermediate frequency (IF) transceiver module 20 generates and outputs a sine test signal (SIN) and a cosine test signal (COS), which are connected to the device under test (i.e., the radio compass simulator) from the output of the sine signal generating unit 21 and the output of the cosine signal generating unit 22 via the first output interface 11 and the second output interface 12 on the front panel interface 10, respectively. The device under test generates a response signal, i.e., a radio compass azimuth signal, which is transmitted to the IF transceiver module 20 via the compass RF input interface 13 on the front panel interface 10. The IF transceiver module 20 analyzes the radio compass signal and transmits the analyzed parameters to the zero slot controller 30 via the built-in bus of the PXle backplane 40. The zero slot controller 30 displays the results on the display screen 14 via the DP interface.
[0025] Figure 2 This is a schematic diagram of the architecture of an intermediate frequency signal transceiver module according to an embodiment of the present utility model. Figure 2 As shown, the cosine signal generating unit 22 includes: a first DDS chip 221, a first gain controller 222, and a first digital-to-analog converter 223; wherein, the first DDS chip 221 is connected to the first digital-to-analog converter 223 through the first gain controller 222, and the output terminal of the first digital-to-analog converter 223 is connected to the second output interface 12.
[0026] Specifically, the first DDS chip 221 is used to generate a cosine digital signal;
[0027] The first gain controller 222 is used to dynamically adjust the output amplitude;
[0028] The first digital-to-analog converter 223 is used to convert a cosine digital signal into a cosine analog signal and use the cosine analog signal as a cosine test signal.
[0029] Specifically, such as Figure 2 As shown, the sine wave signal generating unit 21 includes: a second DDS chip 211, a phase controller 212, a second gain controller 213, and a second digital-to-analog converter 214; wherein, the second DDS chip 211 is connected to the second digital-to-analog converter 214 through the phase controller 212 and the second gain controller 213, and the output terminal of the second digital-to-analog converter 214 is connected to the first output interface 11.
[0030] Specifically, the second DDS chip 211 is used to generate a sinusoidal digital signal;
[0031] The phase controller 212 is used to control the phase shift of a sinusoidal digital signal according to a preset period; for example, to control the sinusoidal digital signal to shift by 180° every 6 periods.
[0032] The second digital-to-analog converter 214 is used to convert a sinusoidal digital signal into a sinusoidal analog signal and use the sinusoidal analog signal as a sinusoidal test signal.
[0033] Specifically, such as Figure 2 As shown, the parsing unit 23 includes an analog-to-digital converter 231, an envelope detector circuit 232, a low-pass filter 233, and a phase comparator 234; wherein,
[0034] The compass RF input interface 13 is connected to the input terminal of the analog-to-digital converter 231. The output terminal of the analog-to-digital converter 231 is connected to the input terminal of the envelope detector circuit 232. The output terminal of the envelope detector circuit 232 is connected to the low-pass filter 233. The low-pass filter 233 and the phase controller 212 are simultaneously connected to the input terminal of the phase comparator 234. The output terminal of the phase comparator 234 is connected to the zero slot controller 30.
[0035] Specifically, while performing phase control on the sinusoidal digital signal, the phase controller 212 triggers the phase comparator 234 to start timing.
[0036] Specifically, the envelope detection circuit 232 is mainly composed of an FPGA integrated circuit, which consists of a memory, a register, a lookup table, and a DSP.
[0037] Specifically, the envelope detection circuit 232 is used to perform envelope analysis on the response signal of the radio compass simulator under test to obtain the analyzed signal. Then, it is low-pass filtered by the low-pass filter 233 to obtain the filtered analyzed signal. Finally, it is compared with the phase transition point of the sinusoidal digital signal after phase control by the phase controller 212 by the phase comparator 234 to analyze the signal delay and send the signal delay to the zero slot controller 30.
[0038] As described above, this utility model provides a radio compass signal analysis device that uses radio technology to control the PXI chassis and intermediate frequency signal transceiver module to automatically and quickly demodulate and analyze standard radio compass signals, thereby completing rapid measurement of the radio compass simulator. It has a high degree of automation and alleviates the technical problem of low detection efficiency in traditional manual detection methods.
[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A radio compass signal analysis device, characterized in that, include: The system includes a front panel interface, an intermediate frequency signal transceiver module, and a zero-slot controller; wherein the front panel interface includes a first output interface, a second output interface, a compass RF input interface, and a display screen; and the intermediate frequency signal transceiver module includes a sine signal generation unit, a cosine signal generation unit, and a resolution unit. The output terminal of the sine signal generating unit is connected to the first output interface, the output terminal of the cosine signal generating unit is connected to the second output interface, the first output interface and the second output interface are connected to the signal input terminal of the radio compass simulator under test, the signal output terminal of the radio compass simulator under test is connected to the compass RF input interface, the compass RF input interface is also connected to the input terminal of the analysis unit, and the output terminal of the analysis unit is connected to the zero slot controller. The sine signal generating unit and the cosine signal generating unit are respectively used to generate sine test signals and cosine test signals; The analysis unit is used to analyze the response signal of the radio compass simulator under test to obtain the signal delay; The zero-slot controller is used to send the signal to the display screen with a delay.
2. The radio compass signal analysis device according to claim 1, characterized in that: It also includes a PXle backplane, on which the intermediate frequency signal transceiver module and the zero slot controller are both mounted.
3. The radio compass signal analysis device according to claim 1, characterized in that: The zero-slot controller is connected to the display screen via a DP interface.
4. The radio compass signal analysis device according to claim 1, characterized in that: The cosine signal generating unit includes: a first DDS chip, a first gain controller, and a first digital-to-analog converter; wherein, the first DDS chip is connected to the first digital-to-analog converter through the first gain controller, and the output terminal of the first digital-to-analog converter is connected to the second output interface; The first DDS chip is used to generate a cosine digital signal; The first digital-to-analog converter is used to convert the cosine digital signal into a cosine analog signal and use the cosine analog signal as the cosine test signal.
5. The radio compass signal analysis device according to claim 1, characterized in that: The sinusoidal signal generating unit includes: a second DDS chip, a phase controller, a second gain controller, and a second digital-to-analog converter; wherein, the second DDS chip is connected to the second digital-to-analog converter through the phase controller and the second gain controller, and the output terminal of the second digital-to-analog converter is connected to the first output interface; The second DDS chip is used to generate a sinusoidal digital signal; The phase controller is used to control the sinusoidal digital signal to shift its phase according to a preset period; The second digital-to-analog converter is used to convert the sinusoidal digital signal into a sinusoidal analog signal and use the sinusoidal analog signal as the sinusoidal test signal.
6. The radio compass signal analysis device according to claim 5, characterized in that: The analysis unit includes an analog-to-digital converter, an envelope detector circuit, a low-pass filter, and a phase comparator; wherein, The compass RF input interface is connected to the input terminal of the analog-to-digital converter (ADC), the output terminal of the ADC is connected to the input terminal of the envelope detector circuit, the output terminal of the envelope detector circuit is connected to the low-pass filter, the low-pass filter and the phase controller are simultaneously connected to the input terminal of the phase comparator, and the output terminal of the phase comparator is connected to the zero-slot controller.