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High-temperature target RCS test calibration method

A calibration method and target technology, used in radio wave measurement systems, instruments, etc., can solve the problems of low test efficiency and long heating time.

Active Publication Date: 2020-01-14
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

The disadvantage of this method is that the high-temperature standard body calibration heating time is long, resulting in low test efficiency

Method used

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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The purpose of the present invention is to test RCS data of high temperature targets. In the actual scene, the temperature field around the high-temperature target is significantly different from the normal temperature. According to the heat diffusion equation, the air temperature at different positions in the space caused by the high-...

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Abstract

The invention relates to a high-temperature target RCS test calibration method. According to one embodiment, the method comprises the following steps: collecting echo level data of a calibration bodyin a normal temperature state and collecting echo level data of an empty chamber in a normal temperature state; after heating a to-be-measured target at a specified temperature, acquiring echo level data of the to-be-measured target; and according to the echo level data of the calibration body, the echo level data of the empty chamber, the echo level data of the to-be-measured target, and predetermined calibration body theoretical RCS data, calculating RCS data of the to-be-measured target. Therefore, the rapid test calibration of the high-temperature target RCS can be realized.

Description

technical field [0001] The invention relates to the technical field of RCS testing, in particular to a high-temperature target RCS testing calibration method. Background technique [0002] Some parts of the aircraft will have different degrees of temperature changes during the flight, such as the head, air inlet and tail nozzle of the high-speed aircraft. As the requirements for stealth performance become higher and higher, it is more and more important to obtain the change of stealth performance of the target under high temperature. For the stealth performance test of the target at high temperature, the research of various domestic units basically focuses on the high-temperature material parameters and reflectivity test. The research on the high-temperature RCS test of the stealth target is still in its infancy, and there is no standard test and calibration method. According to the calibration method of the target RCS test at normal temperature, the test at high temperatur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 王岩汪勇峰吕鸣戚开南赵轶伦袁晓峰
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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