Underwater acoustic measurement method for scattering properties of ship target broadband radar
A technology of scattering characteristics and broadband radar, which is applied in the field of measurement of ship target broadband radar scattering characteristics, can solve the problems that the influence of electromagnetic characteristics of ship targets cannot be simulated, the measurement equipment and environmental requirements are too harsh, and achieve good realizability And operability, low cost, significant economic benefits
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[0038] Specific implementation methods, such as figure 1 As shown in Fig. 1, the underwater acoustic measurement process of ship target wideband radar scattering characteristics, first establish the basic conditions of the test: put the scaled model of the ship target under test upside down in the anechoic pool, adjust the transmitting transducer and receiving transducer The horizontal distance from the scale model of the ship target so that it satisfies the far-field conditions, while adjusting the depth of the transmitting and receiving transducers in the anechoic pool to meet the preset grazing angle of the transmitting beam , turn the scale model of the ship target to be measured to the direction to be measured;
[0039] Then simulate the water surface to produce the wave effect. In a specific embodiment, an electric fan is used to blow the water surface, and the blowing intensity of the interface is adjusted by controlling the number of fans and the blowing intensity to s...
specific Embodiment
[0043] Underwater acoustic measurement of ship target broadband radar scattering characteristics, that is, to obtain high-resolution range images of ship target, the specific implementation method adopted by the present invention is to set the size of the water pool according to the measured ship target model, and select the length, width and depth of the water pool to be selected as 10 respectively. meters, 4 meters, 1.8 meters or so. In order to simulate the real state of the surface ship target as much as possible, it is necessary to configure certain wave-making equipment in order to generate random undulating interface, random swing of the ship, and the multipath effect of the interface on propagation.
[0044] figure 2 Shown in is the schematic diagram of using the underwater acoustic measurement method to measure the broadband high-resolution range image echo of the ship target on the water surface. AFG320), high-frequency power amplifier (JYH100A), digital storage os...
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