Test platform for hydroacoustic analog measurement of full-angle electromagnetic scattering property of target on water surface

Abstract

The invention relates to the field of radar target scattering property testing, and in particular relates to a test platform for hydroacoustic analog measurement of the full-angle electromagnetic scattering property of a target on a water surface. The test platform comprises an instrument platform, a target suspension device, a wave generation device, an underwater vertical rotation device, driving equipment and an underwater transmission platform, wherein the instrument platform, the target suspension device, the wave generation device and the driving equipment are all arranged on the water surface, and the underwater vertical rotation device and the underwater transmission platform are arranged under the water surface; and a water surface target scale model suspended on the target suspension device can rotate for 0-360 degrees, and the underwater vertical rotation device can rotate for 0-90 degrees. The test platform considers the influence of water surface fluctuation on measurementof the water surface target radar scattering property, the water surface target radar scattering property can be measured when the grazing angle is large, and the measurement requirement can be met when the grazing angle is small, and the full-angle (horizontal azimuth angle of 0-360 degrees, and grazing angle of 0-90 degrees) electromagnetic scattering property of the target on the water surfacecan be acquired by measurement.

Description

technical field [0001] The invention relates to the field of radar target scattering characteristic testing, in particular to a test platform for underwater acoustic simulation measurement of full-angle electromagnetic scattering characteristic of water surface targets. Background technique [0002] The residual angle of radar wave incidence when shore-sea radar and ship-borne radar is incident on water or air targets is usually less than 3°. The angle of incidence may be greater than 3°. For example, the new generation of anti-ship missiles generally adopts a maneuvering ballistic mode, usually approaching the surface target by sea-skimming flight, jumping again at the end of the attack, and then diving to attack the surface target. For this reason, it is necessary to study the radar scattering characteristics of water surface targets when measuring large grazing angles. [0003] Obtaining the electromagnetic scattering characteristics of water surface targets includes the...

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Problems solved by technology

[0003] Obtaining the electromagnetic scattering characteristics of water surface targets includes theoretical calculations and experiments. It is difficult to accurately model the test environment during theoretical calculations, resulting in calculation errors

At present, there are mainly three methods for experimentally measuring the scattering characteristics of water surface targets: one is the field measurement method. Personnel provide targeted shape optimization suggestions, and this method requires a lot of capital, manpower, and material resources; the second is the microwave anechoic chamber method, which is a traditional method for measuring the electromagnetic scattering characteristics of water surface targets in the current laboratory. There are the following aspects: Insufficient, first of all, for a large-scale target such as a ship, the requirements for the operating frequency of the experimental test equipment are very high, which is difficult to achieve, and secondly, it is impossible to construct an undulating sea surface environment that has a gre

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