Correction method for near-field effect of triplet target array

Abstract

The invention provides a near-field effect correction method for a three-element group target array. The method comprises: step one, calibrating the precision of an array three-element group and measuring horizontal and vertical position accuracy respectively; step two, according to measurement results from the step one, acquiring weight values of horizontal and vertical correction functions; stepthree, according to weighted values, acquiring a horizontal correction function and a vertical correction function; step four, according to the location of the target at the array, finding out a corresponding three-element group and calculating a precise normalized location of a target point in the three-element group; step five, carrying out calculation at the precise position in the three-element group to obtain a new normalized coordinate position of the target in the three-element group; and step six, acquiring energy values of three horn antennas of the three-element group. Therefore, aproblem of an offset between an ideal position and an actual position of a radiation center due to the near-field effect of the three-element group is solved.

Description

Technical field[0001]The invention relates to a correction method, in particular, to a correction method of the near field effect of a triple target array.Background technique[0002]The hardware-in-the-loop simulation system is a system that simulates the target signal in the laboratory and analyzes and verifies the guidance and control system. The hardware-in-the-loop simulation system plays an indispensable role in reducing research and development costs, shortening the development cycle, and providing development levels.[0003]The hardware-in-the-loop simulation test system is a large and complex system, and the important part of the triple array system is used to simulate the electromagnetic environment and radiate target signals. The antenna array is mainly composed of adjacent antenna triads, and each triad is composed of horn antennas at the three vertices of an equilateral triangle. The radar signal reflected by the target is simulated by the radio frequency radiation of the a...

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Problems solved by technology

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a method for correcting the near-field effect of triplet target arrays, which can solve the problem of deviation between the ideal position of the radiation center and the actual position caused by the triplet near-field effect

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