Beidou short message interference suppression method and device, computer device and storage medium

Abstract

The application discloses a Beidou short message interference suppression method and device, computer equipment and a storage medium, which are used for controlling the transmitting power of an airborne Beidou short message transceiver antenna, thereby avoiding interference to an airborne GPS and reducing the influence on the success rate of short messages to the maximum extent. The main technical scheme is as follows: acquiring the carrier-to-noise ratio of a GPS satellite signal received by an airborne global positioning system (GPS) receiver; determining whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold value; and if the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold value, reducing the output power of the airborne Beidou short message transceiver to a preset output power.

Description

Technical Field

[0001] The present invention relates to the field of satellite navigation technology, and in particular to a Beidou short message interference suppression method, device, computer equipment and storage medium. Background Art

[0002] Beidou short messages are a unique feature of the Beidou satellite navigation system. They offer two-way communication, providing global and regional short message communications. Regional communication capacity reaches 14,000 bits (1,000 Chinese characters) per message, enabling the transmission of text, voice, and images. Global communication capacity is 560 bits (40 Chinese characters) per message. This feature is crucial for ensuring civil aviation safety.

[0003] The onboard Global Positioning System (GPS) antenna and the onboard Beidou short message transceiver antenna are both mounted on the back of the aircraft. During operation, the Beidou short message transceiver may interfere with the GPS receiver. Typically, those skilled in the art reduce the transmit power of the Beidou short message transceiver antenna to avoid interference with the GPS receiver. However, reducing the antenna's transmit power may reduce the success rate of short message transmission and reception, so controlling transmit power requires a balance between the two. Summary of the Invention

[0004] The present invention provides a Beidou short message interference suppression method, device, computer equipment and storage medium, which are used to control the transmission power of an airborne Beidou short message transceiver antenna, thereby avoiding interference with the airborne GPS and minimizing the impact on the short message success rate.

[0005] An embodiment of the present invention provides a Beidou short message interference suppression method, the method comprising:

[0006] Obtain the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system GPS receiver;

[0007] Determining whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold;

[0008] If the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, the output power of the airborne Beidou short message transceiver is reduced to a preset output power.

[0009] An embodiment of the present invention provides a Beidou short message interference suppression device, the device comprising:

[0010] An acquisition module, used for acquiring the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system GPS receiver;

[0011] A determination module, configured to determine whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold;

[0012] The processing module is used to reduce the output power of the airborne Beidou short message transceiver to a preset output power if the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold.

[0013] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the Beidou short message interference suppression method is implemented.

[0014] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned Beidou short message interference suppression method.

[0015] The present invention provides a Beidou short message interference suppression method, apparatus, computer device, and storage medium. The method first obtains the carrier-to-noise ratio of a GPS satellite signal received by an airborne global positioning system (GPS) receiver; then determines whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold; and if the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, reduces the output power of the airborne Beidou short message transceiver to a preset output power. By controlling the transmit power of the airborne Beidou short message transceiver antenna, the present invention can avoid interference with the airborne GPS and minimize the impact on the short message success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a flow chart of a Beidou short message interference suppression method according to an embodiment of the present invention;

[0018] Figure 2 This is a block diagram of a carrier-to-noise ratio threshold and preset output power test in one embodiment of the present invention;

[0019] Figure 3 This is a principle block diagram of a Beidou short message interference suppression device in one embodiment of the present invention;

[0020] Figure 4 FIG. 1 is a schematic diagram of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In one embodiment, if Figure 1 As shown, a Beidou short message interference suppression method is provided, and the method includes the following steps:

[0023] S10, obtaining a carrier-to-noise ratio of a GPS satellite signal received by an airborne global positioning system (GPS) receiver.

[0024] The carrier-to-noise ratio of the GPS satellite signal is the ratio of the carrier signal to the noise floor. Methods for obtaining the carrier-to-noise ratio of the GPS satellite signal received by the airborne GPS receiver include but are not limited to obtaining the carrier-to-noise ratio of the GPS satellite signal calculated and output by the GPS receiver through the aviation bus.

[0025] It should be noted that the carrier-to-noise ratio (CNR) is a standard measurement used to indicate the relationship between the carrier and the carrier noise, usually expressed as CNR or C / N (dB). A high CNR can provide better signal reception, better signal communication quality, and better signal reliability.

[0026] S20: Determine whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold.

[0027] The carrier-to-noise ratio threshold indicates the critical value at which the airborne GPS satellite signal will be interfered with by the airborne Beidou short message transceiver. In this embodiment, if the carrier-to-noise ratio of the airborne GPS satellite signal is determined to be less than the carrier-to-noise ratio threshold, the process proceeds to step S30. If the carrier-to-noise ratio of the airborne GPS satellite signal is determined to be greater than or equal to the carrier-to-noise ratio threshold, no further processing is required.

[0028] S30: If the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, reducing the output power of the airborne Beidou short message transceiver to a preset output power.

[0029] Among them, the preset output power is used to control the transmission power of the airborne Beidou short message transceiver antenna. By adjusting the output power of the airborne Beidou short message transceiver according to the preset output power, it can avoid interference with the airborne GPS and minimize the impact on the short message success rate.

[0030] The present invention provides a Beidou short message interference suppression method. The method first obtains the carrier-to-noise ratio of the GPS satellite signal received by an airborne global positioning system (GPS) receiver; then determines whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold; and if the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, reduces the output power of the airborne Beidou short message transceiver to a preset output power. By controlling the transmit power of the airborne Beidou short message transceiver antenna, the present invention can avoid interference with the airborne GPS and minimize the impact on the short message success rate.

[0031] In one embodiment provided by the present invention, Figure 2 The test block diagram shown in the figure obtains the test carrier-to-noise ratio threshold and preset output power in advance. Figure 2 In the embodiment, the satellite navigation simulator, the simulated airborne GPS receiver and the simulated airborne Beidou short message transceiver are arranged outside the darkroom; the transmitting antenna, GPS antenna and short message antenna corresponding to the satellite navigation simulator, the simulated airborne GPS receiver and the simulated airborne Beidou short message transceiver are respectively arranged inside the darkroom.

[0032] It should be noted that because interference is more likely to occur when the GPS antenna and the short message antenna are closer, this embodiment sets the distance between the GPS antenna and the short message antenna to be less than or equal to the distance between the actual antenna installation locations on the aircraft. This ensures that interference is not experienced even at longer distances on the aircraft in actual scenarios.

[0033] The process of obtaining the carrier-to-noise ratio threshold is as follows: setting the output power of the simulated airborne Beidou short message transceiver to normal power, determining whether the simulated airborne GPS receiver is interfered with under the current transmission intensity of the satellite navigation simulator; if the simulated airborne GPS receiver is interfered with under the current transmission intensity, adding the current transmission intensity to the preset transmission intensity to obtain the next transmission intensity, and determining whether the simulated airborne GPS receiver is interfered with under the next transmission intensity of the satellite navigation simulator; if the simulated airborne GPS receiver is not interfered with under the current transmission intensity, recording the carrier-to-noise ratio output by the simulated airborne GPS receiver; determining the carrier-to-noise ratio threshold based on the carrier-to-noise ratio output by the simulated airborne GPS receiver, wherein the carrier-to-noise ratio threshold is greater than the carrier-to-noise ratio output by the simulated airborne GPS receiver. In this embodiment, when the GPS receiver is interfered with, the receiver cannot output a positioning result or the output positioning result is unusable.

[0034] Among them, the process of obtaining the preset output power is: controlling the satellite navigation simulator, setting the carrier-to-noise ratio of the GPS satellite signal it transmits to be less than the recorded carrier-to-noise ratio output by the simulated airborne GPS receiver; gradually reducing the output power of the simulated airborne Beidou short message transceiver; when the simulated GPS receiver is not interfered with, recording the output power of the simulated airborne Beidou short message transceiver at this time; determining the preset output power based on the output power, and the preset output power is less than the output power.

[0035] like Figure 2 As shown, the test process is conducted in a darkroom. GPS satellite signals are generated by a satellite navigation simulator outside the darkroom and transmitted by the transmitting antenna inside the darkroom. The distance between the GPS antenna and the short message antenna should be less than or equal to the distance between the actual antenna installation locations on the aircraft. The output power of the onboard Beidou short message transceiver is set to normal power. The satellite navigation simulator is controlled to gradually increase the GPS signal transmission strength from weak to strong. The onboard GPS receiver is observed for interference. When the GPS receiver is just free of interference, the carrier-to-noise ratio (CNR) output by the onboard GPS receiver is recorded. The CNR threshold can be appropriately greater than this value.

[0036] exist Figure 1 Under the test environment shown, the satellite navigation simulator was controlled to set the GPS signal's carrier-to-noise ratio to be lower than the recorded carrier-to-noise ratio of the simulated airborne GPS receiver output. The output power of the airborne Beidou short message transceiver was gradually reduced. When the GPS receiver was free of interference, the output power of the airborne Beidou short message transceiver was recorded. The lower output power described in the method can be appropriately lower than this power.

[0037] By setting up a verification experiment, the feasibility of the present invention is verified. Figure 2 In the test environment shown, the carrier-to-noise ratio threshold was determined according to the method proposed in an embodiment of the present invention. The test results, shown in Table 1, indicate that GPS interference occurs when the GPS satellite carrier-to-noise ratio is 34. Therefore, the carrier-to-noise ratio threshold can be set to 35.

[0038] Table 1 Carrier-to-noise ratio threshold test results

[0039]

[0040] The lower power value is determined using the method proposed in this CNR threshold. The test results, shown in Table 2, show that when the airborne Beidou short message transceiver output power is -3.9dBm, interference to the airborne GPS receiver disappears. Therefore, the lower power value can be set to -4.0dBm.

[0041] Table 2 Test results of lower power values

[0042]

[0043] Therefore, by the embodiment of the present application, the airborne Beidou short message transceiver can reduce the transmission power when the GPS signal is weak, thereby avoiding interference to the airborne GPS receiver; and can use normal transmission power to ensure the success rate of short message communication when the GPS signal is strong.

[0044] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0045] In an embodiment, a Beidou short message interference suppression device is provided, which corresponds to the Beidou short message interference suppression method in the above embodiment. As shown in the figure, the Beidou short message interference suppression device comprises an acquisition module 10, a determination module 20, and a processing module 30. The functions of each module are described in detail as follows: Figure 3

[0046] The acquisition module 10 is configured to acquire the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system (GPS) receiver.

[0047] The determination module 20 is configured to determine whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold.

[0048] The processing module 30 is configured to reduce the output power of the airborne Beidou short message transceiver to a preset output power if the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold.

[0049] In an embodiment provided by the present application, the carrier-to-noise ratio of the GPS satellite signal is the ratio of the carrier signal to the noise floor.

[0050] Further, the device further comprises a recording module 40.

[0051] The determination module 20 is configured to set the output power of the simulated airborne Beidou short message transceiver to normal power, and determine whether the simulated airborne GPS receiver is interfered under the current transmission intensity of the satellite navigation simulator.

[0052] The determination module 20 is further configured to, if the simulated airborne GPS receiver is interfered under the current transmission intensity, obtain a next transmission intensity by adding a preset transmission intensity to the current transmission intensity, and determine whether the simulated airborne GPS receiver is interfered under the next transmission intensity of the satellite navigation simulator.

[0053] The recording module 40 is configured to record the carrier-to-noise ratio output by the simulated airborne GPS receiver if the simulated airborne GPS receiver is not interfered under the current transmission intensity. ​

[0054] The determination module 20 is further configured to determine the carrier-to-noise ratio threshold according to the carrier-to-noise ratio output by the simulated airborne GPS receiver, wherein the carrier-to-noise ratio threshold is greater than the carrier-to-noise ratio output by the simulated airborne GPS receiver.

[0055] Furthermore, the device further comprises: a control module 50;

[0056] The control module 50 is used to control the satellite navigation simulator to set the carrier-to-noise ratio of the GPS satellite signal transmitted by the simulator to be lower than the recorded carrier-to-noise ratio output by the simulated airborne GPS receiver; and gradually reduce the output power of the simulated airborne Beidou short message transceiver;

[0057] The recording module 40 is used to record the output power of the simulated airborne Beidou short message transceiver when the simulated GPS receiver is not interfered with;

[0058] The determining module 20 is further configured to determine the preset output power according to the output power, where the preset output power is smaller than the output power.

[0059] In one embodiment provided by the present invention, the satellite navigation simulator, the simulated airborne GPS receiver and the simulated airborne Beidou short message transceiver are arranged outside the darkroom; the transmitting antenna, GPS antenna and short message antenna corresponding to the satellite navigation simulator, the simulated airborne GPS receiver and the simulated airborne Beidou short message transceiver are respectively arranged inside the darkroom; the distance between the GPS antenna and the short message antenna is less than or equal to the distance between the actual installation positions of the antennas on the aircraft.

[0060] For the specific definition of the airborne Beidou short message transceiver device, please refer to the definition of the airborne Beidou short message transceiver method above, which will not be repeated here. The various modules in the above-mentioned airborne Beidou short message transceiver device can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0061] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 4As shown. The computer device includes a processor, memory, network interface, and database connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, it implements an airborne Beidou short message transceiver method.

[0062] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the following steps are performed:

[0063] Obtain the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system GPS receiver;

[0064] Determining whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold;

[0065] If the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, the output power of the airborne Beidou short message transceiver is reduced to a preset output power.

[0066] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0067] Obtain the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system GPS receiver;

[0068] Determining whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold;

[0069] If the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, the output power of the airborne Beidou short message transceiver is reduced to a preset output power.

[0070] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0071] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. The modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A BeiDou short message interference suppression method, characterized in that: The method comprises: Obtain the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system GPS receiver; Determine whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold; If the carrier-to-noise ratio of the airborne GPS satellite signal is less than the carrier-to-noise ratio threshold, reducing the output power of the airborne Beidou short message transceiver to a preset output power; Set the output power of the simulated airborne Beidou short message transceiver to normal power to determine whether the simulated airborne GPS receiver is interfered with under the current transmission intensity of the satellite navigation simulator; If the simulated airborne GPS receiver is interfered with at the current transmission intensity, then adding the preset transmission intensity to the current transmission intensity to obtain a next transmission intensity, and determining whether the simulated airborne GPS receiver is interfered with at the next transmission intensity of the satellite navigation simulator; If the simulated airborne GPS receiver is not interfered with under the current transmission intensity, the carrier-to-noise ratio output by the simulated airborne GPS receiver is recorded; The carrier-to-noise ratio threshold is determined according to the carrier-to-noise ratio output by the simulated airborne GPS receiver, and the carrier-to-noise ratio threshold is greater than the carrier-to-noise ratio output by the simulated airborne GPS receiver.

2. The method according to claim 1, characterized in that The carrier-to-noise ratio of the GPS satellite signal is the ratio of the carrier signal to the noise floor.

3. The method according to claim 1, characterized in that The method further comprises: Controlling the satellite navigation simulator to set the carrier-to-noise ratio of the GPS satellite signal transmitted by the simulator to be less than the recorded carrier-to-noise ratio output by the simulated airborne GPS receiver; gradually reducing the output power of the simulated airborne Beidou short message transceiver; When the simulated airborne GPS receiver is not interfered with, the output power of the simulated airborne Beidou short message transceiver is recorded; The preset output power is determined according to the output power, and the preset output power is less than the output power.

4. The method according to claim 3, characterized in that The satellite navigation simulator, the simulated airborne GPS receiver and the simulated airborne Beidou short message transceiver are arranged outside the darkroom; The transmitting antenna, GPS antenna, and short message antenna corresponding to the satellite navigation simulator, the simulated airborne GPS receiver, and the simulated airborne Beidou short message transceiver are respectively arranged in a darkroom; the distance between the GPS antenna and the short message antenna is less than or equal to the distance between the actual installation positions of the antennas on the aircraft.

5. A Beidou short message interference suppression device, characterized in that: The device comprises: An acquisition module, used for acquiring the carrier-to-noise ratio of the GPS satellite signal received by the airborne global positioning system GPS receiver; A determination module, used to determine whether the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold; a processing module, configured to reduce the output power of the airborne Beidou short message transceiver to a preset output power if the carrier-to-noise ratio of the airborne GPS satellite signal is less than a carrier-to-noise ratio threshold; The determination module is used to set the output power of the simulated airborne Beidou short message transceiver to normal power and determine whether the simulated airborne GPS receiver is interfered with under the current transmission intensity of the satellite navigation simulator; The determining module is further configured to, if the simulated airborne GPS receiver is interfered with at the current transmission intensity, add the preset transmission intensity to the current transmission intensity to obtain a next transmission intensity, and determine whether the simulated airborne GPS receiver of the satellite navigation simulator is interfered with at the next transmission intensity; a recording module, configured to record the carrier-to-noise ratio output by the simulated airborne GPS receiver if the simulated airborne GPS receiver is not interfered with under the current transmission intensity; The determination module is further configured to determine the carrier-to-noise ratio threshold according to the carrier-to-noise ratio output by the simulated airborne GPS receiver, wherein the carrier-to-noise ratio threshold is greater than the carrier-to-noise ratio output by the simulated airborne GPS receiver.

6. The device according to claim 5, characterized in that The carrier-to-noise ratio of the GPS satellite signal is the ratio of the carrier signal to the noise floor.

7. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the Beidou short message interference suppression method as described in any one of claims 1 to 4 is implemented.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the Beidou short message interference suppression method as described in any one of claims 1 to 4 is implemented.

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