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Proceedings Paper

Electromagnetic model based SAR ATR through attributed scatterers
Author(s): Conghui Ma; Gongjian Wen; Feng Gao; Xiaohong Huang; Xiaoliang Yang
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Paper Abstract

Electromagnetic model (em-model) provides a concise and physically relevant description of target through representative scatterers. In a forward built em-model, detailed information about each scatterer’s position, scattering amplitude along with its provenance can be predicted. This makes em-model a good candidate for use in synthetic aperture radar (SAR) automatic target recognition (ATR). In this paper, we introduce scatterers’ provenance as attributed information into target recognition, and an attributed em-model based target recognition method is proposed. Firstly, according to the purpose of ATR, each scatterer in em-model is endowed with an importance factor based on its provenance. Secondly, a detection is implemented to decide whether the em-model predicted scatterer has a corresponding scatterer in measured data. If the scatterer exist in measured target, evaluate how similar the scatterer pair resembled with each other. Next, similarities of all the scatterer pairs are synthesized as a whole match score between em-model and SAR data. In the synthesis, the importance factor servers as a weighting factor that scatterer with more attention will be more discriminative for recognition. In the end, target in measured SAR data is recognized as the model type or not based on the match score. The novelty of this method comes from taking into account of the provenance information of scatterers as attributed information and endowing the scatterers with different important factors according to their importance in recognition. This makes the attributed scatterer based recognition method pertinent to the purpose of ATR. Experiments on simulated Tank SAR data that produced by a high frequency electromagnetic simulation software verified the effectiveness of this method.

Paper Details

Date Published: 21 October 2016
PDF: 6 pages
Proc. SPIE 9993, Millimetre Wave and Terahertz Sensors and Technology IX, 99930M (21 October 2016); doi: 10.1117/12.2241891
Show Author Affiliations
Conghui Ma, National Univ. of Defense Technology (China)
Gongjian Wen, National Univ. of Defense Technology (China)
Feng Gao, National Univ. of Defense Technology (China)
Xiaohong Huang, National Univ. of Defense Technology (China)
Xiaoliang Yang, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 9993:
Millimetre Wave and Terahertz Sensors and Technology IX
Neil A. Salmon; Sherif Sayed Ahmed, Editor(s)

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