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

被引：0
|
作者：
Wang T. [1 ]
Tong C. [1 ]
Wang Y. [1 ]
Liu J. [2 ]
机构：
[1] Air and Missile Defense College, Air Force Engineering University, Xi'an
[2] Unit 94782 of the PLA, Hangzhou
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2022年 / 44卷 / 01期
关键词：
Near field; Radar echo; Scattering model; Ultra-low altitude;
D O I：
10.12305/j.issn.1001-506X.2022.01.18
中图分类号：
学科分类号：
摘要：
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. © 2022, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：139 / 145
页数：6
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