Multipurpose aircraft precision radio altitude simulator

Abstract

The invention provides a multipurpose aircraft precision radio altitude simulator. The simulator at least comprises a fixed attenuator, an electric / optical conversion module, a program-controlled optical fiber matrix delay module, an optical / electric conversion module, a program-controlled compensation buffer output module, a control module, a radio frequency cable, a control cable, an input interface and an output interface. According to the multipurpose aircraft precision radio altitude simulator provided by the invention, an optical fiber delay technology is adopted as a precise delay meansof radio signals, the optical fiber segment and length of an optical fiber delay matrix unit can be adjusted and controlled as required, the provided radio altitude simulation environment variable and adjustment range are large and the accuracy is high, and the simulator has the excellent characteristics of simple structure, good universality and the like. The simulator can be used as independentequipment, can also be integrated into other related systems, and provides an excellent radio altitude variable simulation environment for radio altimeter detection with comprehensive functional performance, and has high popularization and application value in radio altimeter detection.

Description

technical field [0001] The invention relates to the technical field of aircraft system testing, in particular to a multi-purpose aircraft precision radio altimeter simulator, which is used for airborne radio altimeter detection. Background technique [0002] The radio altimeter simulator is an essential and important device or component in the radio altimeter detection device. Its function is mainly to provide a radio altimeter simulation environment that meets certain requirements for the detection of the radio altimeter. It mainly uses the radio signal delay mechanism to accurately delay the input and output of the radio altimeter transceiver transmission signal, and through the formula H=T c / 2 (c is the speed of light) Calculate the radio altitude analog value H reflected by the delay time T. The delay time characteristics of the radio signal input and output of the radio altitude simulator reflect the simulated environment characteristics of the radio altitude value it ...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the technical defects of the existing radio altimeter simulators in the range of analog parameters, accuracy, and adjustment capabilities, a multi-purpose aircraft precision radio altimeter simulator is proposed to meet the needs of multi-purpose aircraft with comprehensive functional performance. Radio altimeter detection usage requirements

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