Monostation radar target characteristic measurement method for determining region of synchronous scattering points

Abstract

The invention discloses a monostation radar target characteristic measurement method for determining a region of synchronous scattering points. The method comprises the following steps: establishing a three-dimensional rectangular coordinate system in a darkroom; determining the position where an emitting-receiving antenna is in the three-dimensional rectangular coordinate system; taking the position where an emitting-receiving antenna is as the center of a circle, taking the nearest distance and the furthest distance away from the emitting-receiving antenna in a testing region where a target to be measured is as semi-diameters respectively, and constructing two ball surfaces in the darkroom; taking the two ball surfaces and the space between the two ball surfaces as the region of synchronous scattering points through monostation radar target characteristic measurement. According to the method, the region of synchronous scattering points that signals of a target to be measured at any position of a testing region reach the emitting-receiving antenna simultaneously in the darkroom can be quickly searched; by uniformly adding wave-absorbing materials with high performance in the region or finding a solution to remove scattering sources, the scattering signal strength of the parts can be greatly reduced, and the influence of scattering of the parts on the measurement accuracy of the scattering signals of the target to be measured is reduced.

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 ​​the scatter point synchronously in the measurement of the characteristics of a monostatic 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 measurement is usually carried out in a microwave anechoic chamber. Schematic diagram of indoor single-station far-field radar target characteristic measurement as shown in figure 1 As shown, the single-station measurement means that the transmitting antenna and the receiving antenna are located at the same position or are the same antenna. The distance satisfies the far-field condition, the transmitti...

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Problems solved by technology

However, this processing method cannot eliminate the scattered signals that reach the receiving antenna at the same time as the scattered signals in the darkroom and the target to be measured. If the distances between the receiving antennas are equal, these unwanted scattered signals will also fall into the rectangular box in Figure b, and arrive at the same time as the target signal to be measured, and it will be difficult to eliminate them by the above-mentioned method of adding time-domain gates

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