Radar altimeter low intercept performance test method

Abstract

The invention discloses a radar altimeter low intercept performance testing method, aiming to provide a radar altimeter low intercept performance test method with complete test indicators, high test accuracy and low test cost. The present invention is realized through the following technical solutions: the control computer sends the complex scene simulation information to the radar altimeter complex scene simulator, outputs the generated echo signal to the radar altimeter to start the radio frequency control software, and manages the radiation switch of the radar altimeter in real time State, analyze the demand for effective radiation power when the radar altimeter works normally at any height within the altimetry range, determine the minimum radiation power under the premise of meeting the high performance, and send the transmitted signal to The power meter is used to test the transmission signal of the radar altimeter, and the radiation time and radiation power are transmitted to the performance analysis computer. According to the measurement results of the radiation parameters of the power meter, the power control range, step, accuracy and interception factor are calculated.

Description

technical field [0001] The invention relates to a low interception performance test method of a radar altimeter. Background technique [0002] Radar altimeter is an active remote sensing device that uses radio technology to measure the vertical distance of the aircraft from the current earth surface. It was initially used to measure the height of the aircraft above the ground, and later gradually expanded to other aspects, such as low-altitude navigation, terrain avoidance, etc. application. The radar altimeter uses the echo of its own transmitted signal to realize the altimetry function. The radar altimeter echo is formed by the backscattering and reflection of the electromagnetic waves radiated from the radar altimeter by the earth's surface. The earth's surface is used as the target of the radar altimeter. The wave is a surface target echo, which is much more complicated. The radar altimeter echo is related to the scattering characteristics of the surface of the area i...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the low interception performance of the current radar altimeter is difficult to accurately and quantitatively evaluate, and to provide a test with complete indicators, high test accuracy and low test cost, which can simulate complex scene echoes and quantitatively test radar Method of low interception performance of altimeter under radio frequency control software

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