Altimeter simulation test system, method and device and storage medium

Abstract

The embodiment of the invention provides an altimeter simulation test system, method and device and a storage medium, and relates to the technical field of altimeter simulation test. The system comprises a real-time simulation machine which is used for generating a flight path based on parameter configuration information carried by a flight path generation instruction when receiving the flight path generation instruction, and determining a flight height and a signal attenuation value based on the flight path; the echo simulator is used for determining a simulation echo signal based on the flight height and the signal attenuation value sent by the real-time simulation machine and a transmission signal sent by the altimeter to be measured; the to-be-measured altimeter is used for determining the measurement height based on the emission signal and the simulation echo signal sent by the echo simulator; and the upper computer is used for determining the height measurement performance of the altimeter to be measured based on the obtained measurement height and the flight height sent by the real-time simulation machine. According to the embodiment of the invention, the performance measurement performance of the altimeter under different dynamic flight conditions can be simulated, the test period is shortened, and the test cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of altimeter simulation testing, and in particular to an altimeter simulation testing system, method, device and storage medium. Background Art

[0002] During the target flight, it is necessary to be able to adapt to various types of complex flight environments such as plateaus, flat land, and water. The radio signal of the altimeter faces different multipath effects in different scenarios, and its echo signal varies greatly, which will have a great impact on the high performance of the altimeter, and then directly affect the flight stability of the target. Therefore, before conducting the target flight test, the high performance of the altimeter needs to be tested.

[0003] At present, the altimeter performance test can be carried out by field test or actual aircraft flight, but there are problems of long cycle and high cost. The altimeter performance test device can also adopt the test method of generating simulated echo signals based on preset parameters, but there is also the problem of being unable to simulate the altimeter's high performance under different dynamic flight conditions. Summary of the invention

[0004] The embodiments of the present application provide an altimeter simulation test system, method, device and storage medium for solving the technical problems that the altimeter cannot simulate the high performance of the altimeter under different dynamic flight conditions or the performance test cycle is long and the cost is high.

[0005] In a first aspect, an embodiment of the present application provides an altimeter simulation test system, comprising: The real-time simulator is used to generate a flight trajectory based on parameter configuration information carried in the flight trajectory generation instruction when receiving the flight trajectory generation instruction sent by the host computer, and determine the flight altitude and signal attenuation value based on the flight trajectory; An echo simulator, connected to the real-time simulator, for determining a simulated echo signal based on the flight altitude and signal attenuation value sent by the real-time simulator and the transmission signal sent by the altimeter to be measured; an altimeter to be measured, connected to the echo simulator, for determining a measured altitude based on a transmitted signal and a simulated echo signal sent by the echo simulator; The host computer is connected to the real-time simulator and is used to determine the high performance of the altimeter to be measured based on the acquired measured altitude and the flight altitude sent by the real-time simulator.

[0006] In one possible implementation, the real-time simulator is specifically used to generate a flight trajectory based on parameter configuration information through a target mathematical simulation model, determine a flight altitude based on position information in the flight trajectory, and determine a signal attenuation value based on the flight altitude.

[0007] In a possible implementation, the echo simulator includes a scene selection module, which is used to select a scene, and the scene includes at least one of the following: ground surface, water surface; The echo simulator is specifically used to perform echo simulation processing on the transmission signal based on the flight altitude, signal attenuation value and selected scene to obtain a simulated echo signal; the echo simulation processing includes at least one of the following: delay processing, signal attenuation processing, and scattering information modulation; Among them, the delay processing is to delay the transmitted signal based on the flight altitude, the signal attenuation processing is to attenuate the transmitted signal based on the signal attenuation value, and the scattering information modulation is to scatter modulate the transmitted signal based on the selected scene.

[0008] In a possible implementation, the altimeter to be measured is specifically used to determine the signal difference frequency information and delay information based on the transmitted signal and the simulated echo signal, and determine the measured altitude based on the signal difference frequency information and the delay information; The signal difference frequency information indicates the difference in frequency between the analog echo signal and the transmission signal, and the delay information indicates the delay in signal transmission time between the analog echo signal and the transmission signal.

[0009] In a possible implementation, the host computer includes a main control module and a data processing module; the high performance measurement includes at least one of measurement accuracy and measurement capability; The main control module is used to send flight trajectory generation instructions to the real-time simulator; The data processing module is used to determine the measurement performance of the altimeter to be measured based on the acquired measured altitude and flight altitude. If the difference between the measured altitude and the flight altitude is within a first preset range, it is determined that the measurement accuracy of the altimeter to be measured meets the performance requirements; if the difference between the measured altitude and the preset altitude is within a second preset range, it is determined that the measurement capability of the altimeter to be measured meets the performance requirements.

[0010] In a possible implementation, the altimeter to be measured is connected to a real-time simulator and is used to send the measured altitude to the real-time simulator, so that the real-time simulator sends the measured altitude to a host computer; or, The altimeter to be measured is connected to the host computer to send the measured altitude to the host computer.

[0011] In a possible implementation, the altimeter simulation test system further includes: A DC power supply is connected to the altimeter to be measured and is used to supply power to the altimeter to be measured.

[0012] In a second aspect, an embodiment of the present application provides an altimeter simulation test method, which is applied to the altimeter simulation test system of the first aspect, including: Sending a flight trajectory generation instruction to the real-time simulator, so that the real-time simulator generates a flight trajectory based on the parameter configuration information carried in the flight trajectory generation instruction, determines a flight altitude and a signal attenuation value based on the flight trajectory, and sends the flight trajectory to the echo simulator, and the echo simulator determines a simulated echo signal based on the flight altitude, the signal attenuation value, and the transmission signal sent by the altimeter to be measured; Based on the acquired measured altitude and the flight altitude sent by the real-time simulator, the measurement performance of the altimeter to be measured is determined; the measured altitude is obtained by the altimeter to be measured based on the transmitted signal and the simulated echo signal.

[0013] In a possible implementation, determining the high performance of the altimeter to be measured based on the acquired measured altitude and the flight altitude sent by the real-time simulator includes: If the difference between the measured altitude and the flight altitude is within a first preset range, it is determined that the measurement accuracy of the altimeter to be measured meets the performance requirements; If the difference between the measured altitude and the preset altitude is within the second preset range, it is determined that the measurement capability of the altimeter to be measured meets the performance requirement.

[0014] In a third aspect, an embodiment of the present application provides an altimeter simulation test device, comprising: A control module is used to send a flight trajectory generation instruction to the real-time simulator, so that the real-time simulator generates a flight trajectory based on the parameter configuration information carried in the flight trajectory generation instruction, determines a flight altitude and a signal attenuation value based on the flight trajectory, and sends the flight altitude and a signal attenuation value to the echo simulator, and the echo simulator determines a simulated echo signal based on the flight altitude, the signal attenuation value, and a transmission signal sent by the altimeter to be measured; The determination module is used to determine the measurement performance of the altimeter to be measured based on the obtained measurement altitude and the flight altitude sent by the real-time simulator; the measurement altitude is obtained by the altimeter to be measured based on the transmission signal and the simulated echo signal.

[0015] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method of the second aspect when the computer program is executed by a processor.

[0016] The beneficial effects of the technical solution provided by the embodiment of the present application are: The altimeter simulation test system provided in the embodiment of the present application sends a flight trajectory generation instruction to the real-time simulator through the host computer. The real-time simulator can generate a flight trajectory based on the parameter configuration information carried by the flight trajectory generation instruction, so that the flight trajectory under different flight conditions can be generated according to the different parameter configuration information set by the host computer, and the high performance measurement of the altimeter under different dynamic flight conditions can be simulated. At the same time, the real-time simulator determines the flight altitude and signal attenuation value based on the flight trajectory, and the echo simulator determines the simulated echo signal based on the flight altitude, signal attenuation value and the transmission signal sent by the altimeter to be tested, so that the altimeter to be tested can determine the measurement altitude based on the transmission signal and the simulated echo signal sent by the echo simulator, and the host computer determines the high performance measurement of the altimeter to be tested based on the measurement altitude and the flight altitude, forming a stable and efficient altimeter real-time simulation test system, a real-time simulation test system that can be used for a long time under laboratory conditions, avoiding field tests or actual machine hanging flights, shortening the test cycle and saving test costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in describing the embodiments of the present application.

[0018] Figure 1 A structural schematic diagram of a first altimeter simulation test system is provided for an embodiment of the present application; Figure 2 A schematic diagram of the structure of a second altimeter simulation test system provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a third altimeter simulation test system provided in an embodiment of the present application; Figure 4 A flowchart of an altimeter simulation test method provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of an altimeter simulation test device provided in an embodiment of the present application; Figure 6 A schematic diagram of the structure of an electronic device is provided in accordance with an embodiment of the present application.

[0019] Reference numerals: 10-Altimeter simulation test system; 110-host computer, 111-main control module, 112-data processing module; 120-real-time simulator; 130-Echo Simulator; 140-altimeter to be measured; 150-DC power supply; 50-altimeter simulation test device; 510-control module; 520-Confirm module. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0021] It will be understood by those skilled in the art that, unless specifically stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the terms "including" and "comprising" used in the embodiments of the present application refer to that the corresponding features can be implemented as the presented features, information, data, steps, operations, elements and / or components, but do not exclude the implementation as other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the one element may be directly connected or coupled to the other element, or it may refer to that the one element and the other element establish a connection relationship through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein indicates at least one of the items defined by the term, for example, "A and / or B" indicates that it is implemented as "A", or is implemented as "A", or is implemented as "A and B".

[0022] First, several terms involved in this application are introduced and explained: Radio altimeter: A device that measures the height of an object above the ground; Radio altimeter target echo simulator: a device used to simulate the radio altimeter's target height echo signal on the ground or sea surface; VxWorks real-time simulator: a simulator that uses the VxWorks real-time operating system; Semi-physical simulation: a simulation technology that introduces part of the simulation object into the simulation loop through physical simulation; Supersonic cruise target: A training device capable of achieving supersonic cruise.

[0023] In the relevant technology, the radio altimeter (altimeter for short) is a key component for obtaining altitude information during the flight of a supersonic cruise target (target for short), and is mainly composed of a transmitting antenna, a receiving antenna, a transceiver component, a signal processing component, an electrical interface, etc. During the flight of the target, the altimeter transmits radio wave signals to the ground or sea surface through the transmitting antenna. A part of the radio wave signals is reflected by the ground or sea surface and received by the receiving antenna. The signal processing component calculates the distance between the aircraft and the ground or sea surface based on information such as the signal difference frequency and time delay.

[0024] The altimeter's height measurement capability and height measurement accuracy are important parameter indicators of the target control system. The height measurement capability refers to the range of relative altitudes measured by the altimeter, and the height measurement accuracy refers to the error of the altimeter in measuring relative altitudes. The target needs to be able to adapt to various types of complex flight environments such as plateaus, flat land, and sea surfaces. The altimeter radar signal faces different multipath effects in different scenarios, and its echo signal varies greatly, which will have a great impact on the altimeter's high measurement performance, and then directly affect the target flight stability. Therefore, before conducting a target flight test, it is necessary to test the altimeter's high measurement performance and conduct a semi-physical simulation test of the target in combination with the altimeter.

[0025] The conventional detection method for radio altimeters is static detection, which simulates the ground echo delay based on the propagation delay of the signal in the delay line. Existing altimeter test systems are usually based on preset parameter conditions. They calculate echo data according to predetermined parameters before testing, and simulate land or sea echoes through continuous playback of simulators to verify the high performance of radio altimeters. The combination of field tests and actual aircraft flight can provide real plateau, flat land or sea target echoes, but this method has high requirements for test equipment, and will also extend the test cycle and increase development costs.

[0026] Through research, it is found that the radio altimeter test system can send altitude simulation control instructions to the exciter through the control and analysis module. The altitude simulation control instructions include altitude value and corresponding attenuation value instructions. The exciter generates and sends altitude simulation signals to the radio altimeter. The control and analysis module receives the radio altimeter test data and completes the radio altimeter test. At the same time, the continuous wave radio altimeter test device can set any altitude within the height measurement range through the host computer software test interface, and the test device automatically realizes the detection of the continuous wave radio altimeter test performance.

[0027] However, the above methods are unable to verify the real-time high performance of the altimeter, and are unable to truly simulate the working state of the altimeter under different dynamic flight conditions.

[0028] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0029] See also Figure 1 As shown, the embodiment of the present application provides a structural schematic diagram of a first altimeter simulation test system 10. The altimeter simulation test system 10 comprises: a real-time simulator 120, an echo simulator 130, an altimeter to be tested 140 and a host computer 110.

[0030] The real-time simulator 120 is used to generate a flight trajectory based on parameter configuration information carried in the flight trajectory generation instruction when receiving the flight trajectory generation instruction sent by the host computer 110, and determine the flight altitude and signal attenuation value based on the flight trajectory.

[0031] The echo simulator 130 is connected to the real-time simulator 120 , and is used to determine a simulated echo signal based on the flight altitude and signal attenuation value sent by the real-time simulator 120 and the transmission signal sent by the altimeter to be measured 140 .

[0032] The altimeter to be measured 140 is connected to the echo simulator 130 , and the altimeter to be measured 140 is used to determine the measurement altitude based on the transmission signal and the simulated echo signal sent by the echo simulator 130 .

[0033] The host computer 110 is connected to the real-time simulator 120 , and the host computer 110 is used to determine the measurement performance of the altimeter 140 to be measured based on the acquired measurement altitude and the flight altitude sent by the real-time simulator 120 .

[0034] The altimeter simulation test system 10 provided in the embodiment of the present application sends a flight trajectory generation instruction to the real-time simulator 120 through the host computer 110. The real-time simulator 120 can generate a flight trajectory based on the parameter configuration information carried by the flight trajectory generation instruction, thereby being able to generate flight trajectories under different flight conditions according to the different parameter configuration information set by the host computer 110, thereby simulating the high performance of the altimeter under different dynamic flight conditions.

[0035] At the same time, the real-time simulator 120 of the embodiment of the present application determines the flight altitude and the signal attenuation value based on the flight trajectory, and the echo simulator 130 determines the simulated echo signal based on the flight altitude, the signal attenuation value and the transmission signal sent by the altimeter 140 to be measured, so that the altimeter 140 to be measured can determine the measurement altitude based on the transmission signal and the simulated echo signal sent by the echo simulator 130, and the host computer 110 determines the measurement performance of the altimeter 140 to be measured based on the measurement altitude and the flight altitude, thereby forming a stable and efficient altimeter real-time simulation test system, which is a real-time simulation test system that can be used for a long time under laboratory conditions, avoiding field tests or actual machine flight, shortening the test cycle and saving test costs.

[0036] See also Figure 1As shown, the altimeter 140 to be measured is connected to the real-time simulator 120, and is used to send the measured height to the real-time simulator 120, so that the real-time simulator 120 sends the measured height to the host computer 110. As another example, the altimeter 140 to be measured is connected to the host computer 110, and is used to send the measured height to the host computer 110.

[0037] In some embodiments, the real-time simulator 120 is specifically used to generate a flight trajectory based on parameter configuration information through a target mathematical simulation model, determine a flight altitude based on position information in the flight trajectory, and determine a signal attenuation value based on the flight altitude.

[0038] Optionally, the parameter configuration information is used to generate a corresponding flight trajectory for the target mathematical simulation model. By configuring different parameter configuration information on the host computer, flight trajectories under different flight conditions can be obtained. The parameter configuration information can be used to configure interference conditions, and the generated flight trajectories are mostly typical flight trajectories.

[0039] Optionally, the real-time simulator 120 is a VxWorks real-time simulator, and the target mathematical simulation model is a target mathematical trajectory simulation model calculation software.

[0040] The embodiment of the present application uses the mathematical simulation model of the target to provide the flight altitude and signal attenuation value of the target under different dynamic conditions through the VxWorks real-time simulator to achieve high performance verification of the altimeter's real-time measurement. Moreover, the mathematical simulation model of the target in the embodiment of the present application can generate flight trajectories under various interference conditions, and can test the altimeter's real-time measurement capability and accuracy under different dynamic conditions.

[0041] In some embodiments, the echo simulator 130 includes a scene selection module, and the scene selection module is used to select a scene, and the scene includes at least one of the following: ground surface and water surface.

[0042] The echo simulator 130 is specifically used to perform echo simulation processing on the transmitted signal based on the flight altitude, signal attenuation value and selected scene to obtain a simulated echo signal; the echo simulation processing includes at least one of the following: delay processing, signal attenuation processing, and scattering information modulation.

[0043] Among them, the delay processing is to delay the transmission signal based on the flight altitude, the signal attenuation processing is to attenuate the transmission signal based on the signal attenuation value, and the scattering information modulation is to scatter modulate the transmission signal based on the selected scene.

[0044] Optionally, the water surface may be a sea surface or a river surface. For example, when a transmitted signal encounters the ground or the sea surface, the signal will be scattered differently, and modulation processing can be performed on the scattering of the transmitted signal according to the scene. It takes a certain amount of time for the transmitted signal to be reflected from the ground or the sea surface, so the received echo signal will have a delay, so the transmitted signal needs to be delayed. The transmitted signal will be attenuated during the transmission process, so signal attenuation processing is required.

[0045] In some embodiments, the altimeter to be measured 140 is specifically used to determine the signal difference frequency information and delay information based on the transmission signal and the simulated echo signal, and determine the measured altitude based on the signal difference frequency information and delay information; Among them, by comparing the transmission signal and the simulated echo signal, signal difference frequency information and delay information can be obtained. The signal difference frequency information indicates the difference in frequency between the simulated echo signal and the transmission signal, and the delay information indicates the delay in signal transmission time between the simulated echo signal and the transmission signal. There will be a certain frequency difference between the frequency of the simulated echo signal and the frequency of the transmission signal, forming the signal difference frequency information. There will be a time difference between the transmission time of the transmission signal sent by the altimeter 140 to be measured and the reception time of the corresponding simulated echo signal, forming the delay information.

[0046] Specifically, the transmission signal is a radio signal, which is a radio frequency signal, and the altimeter to be measured 140 is a radio altimeter. The altimeter to be measured 140 continuously sends the transmission signal to the echo simulator 130 through the transmission feeder.

[0047] See also Figure 2 As shown, the embodiment of the present application provides a structural diagram of a second altimeter simulation test system 10. The host computer 110 includes a main control module 111 and a data processing module 112; the high performance measurement includes at least one of the measurement accuracy and the measurement capability.

[0048] The main control module 111 is used to send a flight trajectory generation instruction to the real-time simulator 120 .

[0049] The data processing module 112 is used to determine the measurement performance of the altimeter 140 to be measured based on the acquired measured altitude and flight altitude. If the difference between the measured altitude and the flight altitude is within a first preset range, it is determined that the measurement accuracy of the altimeter 140 to be measured meets the performance requirements; if the difference between the measured altitude and the preset altitude is within a second preset range, it is determined that the measurement capability of the altimeter 140 to be measured meets the performance requirements.

[0050] Optionally, the first preset range and the second preset range can be set according to the experience of the technicians. When the measured altitude is not much different from the flight altitude, it means that the measurement accuracy of the altimeter 140 to be measured is high. When the measured altitude is not much different from the preset altitude, it means that the measured altitude of the altimeter 140 to be measured does not deviate from the standard altitude, and is within the altitude measurement capability of the altimeter 140 to be measured, meeting the altitude measurement capability requirements.

[0051] In some embodiments, the altimeter simulation test system 10 further includes a DC power supply 150. The DC power supply 150 is connected to the altimeter 140 to be tested, and is used to supply power to the altimeter 140 to be tested.

[0052] Optionally, the DC power supply 150 may be a DC regulated power supply, for example, the altimeter 140 to be measured may be supplied with a power supply voltage of 28V.

[0053] See also Figure 3 As shown, the present application embodiment provides a structural schematic diagram of a third altimeter simulation test system 10. Figure 3 As shown, the VxWorks real-time simulator represents the real-time simulator 120, the radio altimeter target echo simulator represents the echo simulator 130, the radio altimeter represents the altimeter to be measured 140, the DC regulated power supply represents the DC power supply 150, the main control software corresponds to the main control module 111, and the data processing software corresponds to the data processing module 112. The VxWorks real-time simulator and the radio altimeter target echo simulator transmit data through a serial port or a network. The radio altimeter target echo simulator and the radio altimeter transmit data through a receiving feeder and a transmitting feeder.

[0054] based on Figure 3 The altimeter simulation test system 10 shown in the present application provides an altimeter machine performance test implementation method: (1) A DC regulated power supply supplies power to the altimeter, which continuously sends a transmit signal to the radio altimeter target echo simulator through a transmit feeder. (2) Sending a target flight trajectory generation instruction to the VxWorks real-time simulator through the master control software of the host computer 110; (3) After the simulation starts, the VxWorks real-time simulator sends the flight altitude and signal attenuation values ​​calculated by the target mathematical simulation model to the radio altimeter target echo simulator through the serial port; (4) The radio altimeter target echo simulator performs ground or sea surface scattering information modulation and delay processing based on the received transmission signal, flight altitude and signal attenuation value, and sends a simulated echo signal to the radio altimeter through the receiving feeder; (5) The radio altimeter calculates the current measured altitude based on the difference frequency information and delay information between the transmitted signal and the simulated echo signal, and sends it to the VxWorks real-time simulator through the serial port; (6) The data processing software of the host computer 110 receives the flight altitude and measured altitude sent back by the VxWorks real-time simulator, and performs data processing and altimeter performance analysis.

[0055] The embodiment of the present application utilizes target mathematical trajectory simulation model calculation software, and provides the flight altitude trajectory and signal attenuation of the target under different scenarios and dynamic conditions through the VxWorks real-time simulator; the ground or sea surface scattering information modulation and delay processing are performed through the radio altimeter target echo simulator, and the altimeter height measurement data can also be connected to the target semi-physical simulation system, forming a stable and efficient target radio altimeter real-time simulation test system, which can be used for a long time under laboratory conditions.

[0056] See also Figure 4 As shown, the present application embodiment provides a flow chart of an altimeter simulation test method. Figure 4 As shown, the altimeter simulation test method is applied to the altimeter simulation test system 10 of the embodiment of the present application, including: step S401 to step S402.

[0057] S401, sending a flight trajectory generation instruction to the real-time simulator 120, so that the real-time simulator 120 generates a flight trajectory based on the parameter configuration information carried in the flight trajectory generation instruction, determines a flight altitude and a signal attenuation value based on the flight trajectory, and sends the flight trajectory to the echo simulator 130, and the echo simulator 130 determines a simulated echo signal based on the flight altitude, the signal attenuation value, and the transmission signal sent by the altimeter to be measured 140; S402 , determining the measurement performance of the altimeter to be measured 140 based on the acquired measurement altitude and the flight altitude sent by the real-time simulator 120 ; the measurement altitude is obtained by the altimeter to be measured 140 based on the transmission signal and the simulated echo signal.

[0058] The altimeter simulation test method in the embodiment of the present application uses the host computer 110 as the execution end.

[0059] In some embodiments, in step S402, based on the acquired measured altitude and the flight altitude sent by the real-time simulator 120, determining the high performance of the altimeter 140 to be measured includes: If the difference between the measured altitude and the flight altitude is within the first preset range, it is determined that the measurement accuracy of the altimeter 140 to be measured meets the performance requirement; If the difference between the measured altitude and the preset altitude is within the second preset range, it is determined that the measurement capability of the altimeter 140 to be measured meets the performance requirement.

[0060] The altimeter simulation test method of the embodiment of the present application is applied to the altimeter simulation test system 10 of the embodiment of the present application. For the contents not described in detail in the altimeter simulation test method, please refer to the above-mentioned altimeter simulation test system 10.

[0061] See also Figure 5 As shown, the present application embodiment provides a structural schematic diagram of an altimeter simulation test device 50. Figure 5 As shown, the altimeter simulation test device 50 includes: a control module 510 and a determination module 520 .

[0062] The control module 510 is used to send a flight trajectory generation instruction to the real-time simulator 120, so that the real-time simulator 120 generates a flight trajectory based on the parameter configuration information carried in the flight trajectory generation instruction, determines the flight altitude and the signal attenuation value based on the flight trajectory, and sends them to the echo simulator 130. The echo simulator 130 determines the simulated echo signal based on the flight altitude, the signal attenuation value and the transmission signal sent by the altimeter to be measured 140; The determination module 520 is used to determine the measurement performance of the altimeter to be measured 140 based on the acquired measurement altitude and the flight altitude sent by the real-time simulator 120; the measurement altitude is obtained by the altimeter to be measured 140 based on the transmission signal and the simulated echo signal.

[0063] Optionally, the determination module 520 is used to determine that the measurement accuracy of the altimeter 140 to be measured meets the performance requirements if the difference between the measured altitude and the flight altitude is within a first preset range; if the difference between the measured altitude and the preset altitude is within a second preset range, determine that the measurement capability of the altimeter 140 to be measured meets the performance requirements.

[0064] The device of the embodiments of the present application can execute the method provided by the embodiments of the present application, and the implementation principles are similar. The actions performed by each module in the device of each embodiment of the present application correspond to the steps in the method of each embodiment of the present application. For the detailed functional description of each module of the device, please refer to the description in the corresponding method shown in the previous text, which will not be repeated here.

[0065] An embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory, and the processor executes the above computer program to implement the steps of the method of the embodiment of the present application.

[0066] See also Figure 6 As shown, an embodiment of the present application provides a structural schematic diagram of an electronic device 4000. Figure 6The electronic device 4000 shown includes: a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, such as through a bus 4002. Optionally, the electronic device 4000 may also include a transceiver 4004, which may be used for data interaction between the electronic device and other electronic devices, such as data transmission and / or data reception. It should be noted that in actual applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present application.

[0067] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. Processor 4001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0068] The bus 4002 may include a path to transmit information between the above components. The bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0069] The memory 4003 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), magnetic disk storage media, other magnetic storage devices, or any other medium that can be used to carry or store computer programs and can be read by a computer, without limitation herein.

[0070] The memory 4003 is used to store the computer program for executing the embodiment of the present application, and the execution is controlled by the processor 4001. The processor 4001 is used to execute the computer program stored in the memory 4003 to implement the steps shown in the above method embodiment.

[0071] An embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method of the embodiment of the present application are implemented.

[0072] The computer-readable medium of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0073] In an embodiment of the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device, or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in combination with an instruction execution system, device, or device. The program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0074] The embodiment of the present application also provides a computer program product, including a computer program, which can implement the steps and corresponding contents of the aforementioned method embodiment when executed by a processor.

[0075] It should be understood that, although each operation step is indicated by arrows in the flowchart of the embodiment of the present application, the implementation order of these steps is not limited to the order indicated by the arrows. Unless clearly stated herein, in some implementation scenarios of the embodiment of the present application, the implementation steps in each flowchart can be performed in other orders according to demand. In addition, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on actual implementation scenarios. Some or all of these sub-steps or stages may be executed at the same time, and each sub-step or stage in these sub-steps or stages may also be executed at different times respectively. In different scenarios of execution time, the execution order of these sub-steps or stages may be flexibly configured according to demand, and the embodiment of the present application does not limit this.

[0076] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or a part of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories), or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0077] The above is only an optional implementation method for some implementation scenarios of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. An altimeter simulation test system, characterized in that: include: The real-time simulator is used to generate a flight trajectory based on parameter configuration information carried in the flight trajectory generation instruction when receiving the flight trajectory generation instruction sent by the host computer, and determine the flight altitude and signal attenuation value based on the flight trajectory; An echo simulator, connected to the real-time simulator, for determining a simulated echo signal based on the flight altitude sent by the real-time simulator, the signal attenuation value, and a transmission signal sent by the altimeter to be measured; an altimeter to be measured, connected to the echo simulator, and used to determine a measured altitude based on the transmitted signal and the simulated echo signal sent by the echo simulator; The host computer is connected to the real-time simulator and is used to determine the measurement performance of the altimeter to be measured based on the acquired measurement altitude and the flight altitude sent by the real-time simulator.

2. The altimeter simulation test system according to claim 1, characterized in that: The real-time simulator is specifically used to generate a flight trajectory based on the parameter configuration information through a target mathematical simulation model, determine the flight altitude based on the position information in the flight trajectory, and determine the signal attenuation value based on the flight altitude.

3. The altimeter simulation test system according to claim 1, characterized in that: The echo simulator includes a scene selection module, and the scene selection module is used to select a scene, and the scene includes at least one of the following: ground surface, water surface; The echo simulator is specifically used to perform echo simulation processing on the transmission signal based on the flight altitude, the signal attenuation value and the selected scene to obtain a simulated echo signal; the echo simulation processing includes at least one of the following: delay processing, signal attenuation processing, and scattering information modulation; Among them, the delay processing is to delay the transmission signal based on the flight altitude, the signal attenuation processing is to attenuate the transmission signal based on the signal attenuation value, and the scattering information modulation is to scatter modulate the transmission signal based on the selected scene.

4. The altimeter simulation test system according to claim 1, characterized in that: The altimeter to be measured is specifically used to determine signal beat frequency information and delay information based on the transmitted signal and the simulated echo signal, and determine the measured altitude based on the signal beat frequency information and the delay information; The signal frequency difference information indicates the difference in frequency between the analog echo signal and the transmission signal, and the delay information indicates the delay in signal transmission time between the analog echo signal and the transmission signal.

5. The altimeter simulation test system according to claim 1, characterized in that: The host computer includes a main control module and a data processing module; the high performance measurement includes at least one of measurement accuracy and measurement capability; The main control module is used to send a flight trajectory generation instruction to the real-time simulator; The data processing module is used to determine the measurement performance of the altimeter to be measured based on the acquired measured altitude and the flight altitude. If the difference between the measured altitude and the flight altitude is within a first preset range, it is determined that the measurement accuracy of the altimeter to be measured meets the performance requirements; if the difference between the measured altitude and the preset altitude is within a second preset range, it is determined that the measurement capability of the altimeter to be measured meets the performance requirements.

6. The altimeter simulation test system according to claim 1, characterized in that: The altimeter to be measured is connected to the real-time simulator and is used to send the measured height to the real-time simulator, so that the real-time simulator sends the measured height to the host computer; or, The altimeter to be measured is connected to the host computer and is used to send the measured altitude to the host computer.

7. The altimeter simulation test system according to claim 1, characterized in that: Also includes: A direct current power supply is connected to the altimeter to be measured and is used to supply power to the altimeter to be measured.

8. A method for simulating an altimeter test, characterized in that: The altimeter simulation test system applied to any one of claims 1 to 7 comprises: Sending a flight trajectory generation instruction to a real-time simulator, so that the real-time simulator generates a flight trajectory based on parameter configuration information carried in the flight trajectory generation instruction, determines a flight altitude and a signal attenuation value based on the flight trajectory, and sends the flight trajectory to an echo simulator, wherein the echo simulator determines a simulated echo signal based on the flight altitude, the signal attenuation value, and a transmission signal sent by the altimeter to be measured; Based on the acquired measured altitude and the flight altitude sent by the real-time simulator, the measurement performance of the altimeter to be measured is determined; the measured altitude is obtained by the altimeter to be measured based on the transmitted signal and the simulated echo signal.

9. The altimeter simulation test method according to claim 8, characterized in that: Determining the high performance of the altimeter to be measured based on the acquired measured altitude and the flight altitude sent by the real-time simulator, including: If the difference between the measured altitude and the flight altitude is within a first preset range, it is determined that the measurement accuracy of the altimeter to be measured meets the performance requirement; If the difference between the measured altitude and the preset altitude is within a second preset range, it is determined that the measurement capability of the altimeter to be measured meets the performance requirement.

10. An altimeter simulation test device, characterized in that: include: A control module, used for sending a flight trajectory generation instruction to a real-time simulator, so that the real-time simulator generates a flight trajectory based on parameter configuration information carried in the flight trajectory generation instruction, determines a flight altitude and a signal attenuation value based on the flight trajectory, and sends the flight altitude and a signal attenuation value to an echo simulator, wherein the echo simulator determines a simulated echo signal based on the flight altitude, the signal attenuation value, and a transmission signal sent by the altimeter to be measured; The determination module is used to determine the measurement performance of the altimeter to be measured based on the acquired measurement altitude and the flight altitude sent by the real-time simulator; the measurement altitude is obtained by the altimeter to be measured based on the transmission signal and the simulated echo signal.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 8 to 9 are implemented.

Images