A Method for Measuring Insertion Loss at Any Position of Radome

Abstract

The invention discloses a method for measuring insertion loss of any position of an antenna housing. When an antenna housing is at any position, the noise temperature of the antenna with or without the housing is measured by an Y-factor method, the residual antenna noise temperature which is caused by the antenna housing is obtained by calculating the difference of the noise temperature of the antenna with or without the housing, and thus, the insertion loss of the antenna housing is determined. The method is simple and practicable and has popularization and application value.

Description

technical field [0001] The invention relates to a radar radome, a ship-borne radome, a satellite communication ground station radome, etc., and is particularly suitable for the measurement of insertion loss at any position of the radome. Background technique [0002] The radome is a kind of dielectric shell used to protect the antenna, so that the antenna can avoid possible damage in various harsh environments, and it is widely used. Such as radar radome, shipboard radome, satellite communication ground station radome, etc. Insertion loss is one of the most important technical indicators of a radome. Usually, the far-field method is used to measure the signal power level received by the antenna with or without a hood, so as to determine the insertion loss of the radome. This method for measuring radome insertion loss has the following limitations: [0003] 1. The traditional far-field method measures the insertion loss of the radome. Since the elevation angle of the transc...

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Problems solved by technology

[0003] 1. The traditional far-field method measures the insertion loss of the radome. Since the elevation angle of the transceiver antenna is fixed, the measured insertion loss of the radome is the local insertion loss of a certain elevation angle, and the insertion loss of any position of the radome cannot be measured;

[0004] 2. The insertion loss of the radome is very small, and the conventional far-field method is used for measurement. Due to the limitation of the height of the antenna erection, ground reflection is inevitable, which affects the measurement accuracy of the insertion loss of the radome;

[0005] 3. The traditional far-field method measures the insertion loss of the radome, and the test system and measurement method are complicated

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