Method for eliminating multi-path reflection interference error in HIRF test

A technology of reflection interference and ground reflection, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem that it cannot truly reflect the flight status of aerospace vehicles

Active Publication Date: 2015-02-25
SHANGHAI RADIO EQUIP RES INST
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AI Technical Summary

Problems solved by technology

Due to the existence of ground multipath reflection interference, the ground simulation test cannot truly reflect the flight status of the aerospace vehicle, and the test results have errors due to ground multipath reflection interference.

Method used

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  • Method for eliminating multi-path reflection interference error in HIRF test
  • Method for eliminating multi-path reflection interference error in HIRF test
  • Method for eliminating multi-path reflection interference error in HIRF test

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Embodiment Construction

[0063] The following combination Figure 1 ~ Figure 4 , a preferred embodiment of the present invention is described in detail.

[0064] Such as figure 1 Shown, for the HIRF test that the present invention provides the flow chart of the elimination method of ground multipath reflection interference error, this method comprises the following steps:

[0065] S1. Determine the position of the center test point and the positions of N auxiliary test points according to the HIRF test, and configure and establish a ground multipath reflection interference model; wherein, the ground multipath reflection interference model includes transmitting antenna gain, transmitting antenna position and height, and ground Reflection coefficient.

[0066] Such as figure 2 As shown, in the step S1, in the process of establishing the ground multipath reflection interference model, the test distance R between the transmitting antenna and the central test point position needs to meet the following ...

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Abstract

The invention relates to a method for eliminating the multi-path reflection interference error in an HIRF test. The method comprises the steps that first, the position of a center test point and the positions of N auxiliary test points are determined according to the HIRF test, and a ground multi-path reflection reference model is established; second, a ray path tracking method is used for calculating the total electric field strength of the center test point and the total electric field strength of the N auxiliary test points; third, a least square error approach method is used for determining the undetermined coefficients in a total electric field strength function of the center test point, and a collineation electromagnetic wave component and a ground reflection electromagnetic wave component at the center test point are separated; fourth, the elimination factors of ground multi-path reflection interference are determined, and the ground multi-path reflection interference error of the center test point is eliminated. The method is used for eliminating the ground multi-path reflection interference error of the data of the HIRF test, it is guaranteed that the data of the HIRF test are correct, and influences caused by the ground multi-path reflection interference error in an aerospace vehicle HIRF ground-based simulation test are eliminated.

Description

technical field [0001] The invention relates to a method for eliminating ground multipath reflection interference errors in a HIRF (High Intensity Radio Field, high-intensity radiation field) ground simulation test of an aerospace vehicle, and belongs to the field of electromagnetic environment effect testing of aerospace vehicles. Background technique [0002] The external man-made electromagnetic interference received by aerospace vehicles includes electromagnetic radiation from airports (ground control radars, etc.), ground transmitters (commercial radio stations, etc.), ships (navigation radars, etc.) and air (tracking radars, etc.), the sum of these radiations Called the HIRF environment. In the past ten years, with the development of radar, microwave cellular communication, artificial communication network and radio frequency source of equipment, the HIRF environment faced by aerospace vehicles has become more and more complex. influence is also becoming apparent. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 方金鹏武亚君张元陈奇平
Owner SHANGHAI RADIO EQUIP RES INST
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