Method for determining radar target characteristic measuring synchronous scattering point area of compact range

Abstract

The invention discloses a method for determining a radar target characteristic measuring synchronous scattering point area of a compact range. The method comprises the following steps: building a three-dimensional rectangular coordinate system in a dark chamber of the compact range; determining position of a feed source of the compact range in the three-dimensional rectangular coordinate system; determining position of a reflective surface of the compact range according to the position of the feed source of the compact range and position of a test area; taking the position of the feed source of the compact range as a circle center and taking a furthest distance and a shortest distance generated when reflection wave of the feed source of the compact range is reflected by the reflective surface of the compact range and directly arrives at a target to be tested in an area to be tested as semi-diameter to build two spherical surfaces in the dark chamber of the compact range; forming a synchronous scattering point area by using the two spherical surfaces and a space between the two spherical surfaces. The method can be used for quickly finding a maximum synchronous scattering point area in the compact range with scattering signals which have interference effects and arrive at the feed source of the compact range simultaneously with scattering signals of the target to be tested.

Description

technical field [0001] The invention relates to a method for determining the area of ​​a scattering point. More specifically, it relates to a method for determining the area of ​​scattered points synchronously with measurement of characteristics of a compact field radar target. Background technique [0002] With the development of stealth and anti-stealth technology, the requirements for the measurement accuracy of radar target characteristics are getting higher and higher. In order to meet the far-field conditions of classic radar target characteristic measurement, the compact field has become the most commonly used method for radar target characteristic measurement. Schematic diagram of indoor compact field radar target characteristic measurement as shown in figure 1 As shown, the compact field feed emits spherical electromagnetic waves, which are converted into plane waves to irradiate the target to be measured after being reflected by the compact field reflector. Feed...

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Problems solved by technology

However, this processing method cannot eliminate the interference scattering signal emitted by the compact field feed source in the compact field, scattered by the scattering points in the compact field to the compact field feed source, and the transmitted wave of the compact field feed source is reflected by the compact field reflective surface. Arrive at the target to be measured, and then return to the scattered signal of the target to be measured at the same time as the scattered signal of the target to be measured by the original path, that is, if the interference scattered signal is synchronized with the time of the target to be measured way, cannot be eliminated

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