基于近场散射模型的超低空目标雷达回波模拟

doi:10.12305/j.issn.1001-506X.2022.01.18

Abstract

Abstract:

The electromagnetic scattering mechanism of ultra-low altitude target in near zone is more complex, so it is necessary to establish a more accurate and flexible echo model. Based on the improved physical optics and method equivalent current, the target near-field scattering model is established. Combined with the facet model and "four path" model, the evaluated methods of near zone scattering contributions for environment and multipath are proposed. Using the proposed electromagnetic model, the radar echo signal model is established with the radar seeker detecting the ultra-low altitude target in the near zone as the background of the scene. The validity of the near-field electromagnetic model is verified, and the signal bandwidth and the influence of the relative motion state between the radar and the target on the echo signal are simulated and analyzed. Simulation results show that the echo model better represents various scattering mechanisms in complex scenes, and has theoretical significance and practical value for exploring the characteristics and laws of ultra-low altitude targets in the near zone.

Key words: ultra-low altitude, near field, scattering model, radar echo

CLC Number:

TN011

Tong WANG, Chuangming TONG, Yijin WANG, Jie LIU. Radar echo simulation of ultra-low altitude target based on near-field scattering model[J]. Systems Engineering and Electronics, 2022, 44(1): 139-145.

Figures/Tables 9

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References 31

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Radar echo simulation of ultra-low altitude target based on near-field scattering model

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