CNI external field wireless automatic detection equipment

Abstract

The invention discloses CNI external field wireless automatic detection equipment, and aims to provide an external field detection CNI device and method which are simple and convenient to operate andhigh in detection efficiency. According to the technical scheme, a radio frequency channel unit sends a received signal to a radio frequency channel unit for processing and then sends the processed signal to a signal processing unit; AD conversion is carried out on the radio frequency modulated signal to obtain a baseband signal; or the baseband signal is converted into a radio frequency signal through digital-to-analog DA conversion; modulation / demodulation, dispreading / de-hopping, error correction coding and decoding, beam envelope processing and time measurement of various modes are realized; one or more specific tasks or services is distributed to form a reconfigurable FPGA program storage space processing platform capable of configuring standard signals; detection of different functions is achieved through loading software, control over the working parameters and the working state of the detection host and control over the working parameters and the working state of the detected aircraft CNI system are completed, and a display control unit displays a user operation interface and conducts data monitoring.

Description

technical field [0001] The present invention relates to the field of aviation wireless automatic testing, in particular to an outfield wireless detection device and method for an avionics integrated communication and navigation identification system (CNI) based on software radio architecture, through wireless technology, zero intermediate frequency technology and comprehensive design. Background technique [0002] The avionics communication navigation and identification subsystem (Communication Navigation and Identification, CNI) is an important part of the aircraft's integrated radio frequency sensor system. Identification, complete voice / data communication between aircraft and aircraft, aircraft and ground, navigation, air traffic control response, identification friend or foe and audio alarm and internal self-inspection functions, focusing on checking whether the CNI system can correctly control various equipment attached to it The working status and various functions of ...

AI Technical Summary

Problems solved by technology

The application shows that although the tester solves the problems of difficult real-time collection of large data volumes and difficult traceability of fault causes in the CNI system, its shortcoming is that the CNI field tester can only monitor and detect the bus signals of the CNI system. To check whether the CNI function is normal, it is not possible to conduct a full-process test on functional link resources starting from the aircraft antenna, resulting in insufficient and incomplete test results

These testing equipment have a single detection function, large size, heavy weight, and a low degree of integration, resulting in more than a dozen types of testing equipment required for the CNI function testing of aircraft in the field, huge volume and weight, and complicated operation, which is very inconvenient for storage and inspection. use

At the same time, the current detection methods for aircraft are still limited to wired detection methods, manual testing methods, and airborne formal waveform testing methods. The wired detection method will cause deviations in the disassembly and assembly of the aircraft structure, and the detection takes a long time; the manual testing method is complex and cumbersome to operate. , time-consuming, and low efficiency; airborne formal waveform testing has a very long development and joint test cycle due to the cumbersome confidentiality management process and complex protocol waveforms, and there is a large risk of confidentiality

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