A fast parameter estimation method for attributed scattering centers based on complex field separation

He Tian; Hongcheng Yin; Hongxia Mao; Weiwei Jia

doi:10.1117/12.2613535

15 February 2022 A fast parameter estimation method for attributed scattering centers based on complex field separation

He Tian, Hongcheng Yin, Hongxia Mao, Weiwei Jia

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121661S (2022) https://doi.org/10.1117/12.2613535
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

This paper presents focus on physical feature extraction and parameter estimation for satellites in space. In the context of increasingly prominent space security issues, it is necessary to improve the security and protection capabilities of the space system, especially the refined feature extraction and recognition technology of space targets. However, the feature extraction methods based on optical or radar imagery are limited by resolution and observation conditions, making it difficult to extract refined features. This paper is based on the attribute scattering center theory, using high-frequency electromagnetic wave detection method. Through the attribute parameter estimation result of the scattering center, the scattering structure on the space target can be identified and its distribution position can be analyzed, and the structure and size of the typical parts in the space target can be extracted. Aiming at the problem of high parameter dimension and large amount of calculation, an attributed scattering centers parameter estimation method with amplitude and phase separation is proposed, which reduces the time complexity of parameter estimation by an order of magnitude, saves system resources and increases the parameter estimation rate, and the estimation accuracy is better than 90%. In terms of the efficiency and accuracy of parameter estimation from simulation and experimental data, the effectiveness of the proposed method in this paper is verified.

Citation Download Citation

He Tian, Hongcheng Yin, Hongxia Mao, and Weiwei Jia "A fast parameter estimation method for attributed scattering centers based on complex field separation", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121661S (15 February 2022); https://doi.org/10.1117/12.2613535

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KEYWORDS

Scattering

Electromagnetic scattering

Radar

Associative arrays

Satellites

Feature extraction

Lithium

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