Transceiving channel self-inspection method of navigation management inquiry and response simulator

Abstract

The invention discloses a transceiving channel self-inspection method of a navigation management inquiry and response simulator. According to the transceiving channel self-inspection method, operatingfrequencies of a transmitter and a receiver respectively are controlled by means of a signal processing module, channels of radio frequency signals of the transmitter are designed into two switchablepaths, one path can be output to an antenna port by means of a front-end amplifier, and the other path can be connected to a receiver module by means of a coupler. When self-inspection begins, the signal processing module outputs an excitation pulse signal to the transmitter, the transmitter generates a radio frequency signal and outputs the radio frequency signal to the receiver by means of a circulator, the receiver performs mixing demodulation on the radio frequency signal to obtain a baseband signal and then transmits the baseband signal to the signal processing module, and the signal processing module judges whether the transceiving channel operates normally or not according to the received baseband signal. Proved by engineering practice, the detection method is precise and effective, the detection efficiency and reliability of self-inspection of the navigation management inquiry and response simulator are improved, and the manpower and material cost are saved.

Description

technical field [0001] The invention belongs to the field of data transmission channel testing, in particular to a self-checking method of a transceiver channel for an air traffic control inquiry response simulator. Background technique [0002] Secondary surveillance radar (SSR for short) system consists of interrogator and transponder. The interrogator of the secondary radar system can transmit 1030MHZ interrogation signal and receive the 1090MHZ response signal of the transponder to obtain the position and height of the target. , flight number, identification code and other information. Secondary radar systems are widely used in the field of traffic control in military and civil aviation. [0003] The air traffic control interrogation and response simulator is a special detection device for detecting whether the secondary radar system is working normally. Its working mode can be set to interrogator mode or transponder mode through mode configuration, so as to detect tran...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the detection efficiency is low due to the self-inspection of the transceiver channel of the existing air traffic control inquiry response simulator mainly through external detection equipment or by adding an additional self-inspection oscillation source. The present invention proposes an air traffic control inquiry The transceiver channel self-test method of the response simulator does not need to increase the self-test oscillation source and external detection equipment, and the closed self-test of the transceiver channel can be completed only through its own transceiver module

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