Study on detection and recognition of phase contamination and multimode propagation in ionosphere for OTHR

IEICE Electronics Express

Li Xue¹  Jiao Pei Nan²  Deng Wei Bo¹ 

[1] Harbin Institute of Technology.;China Research Institute of Radiowave Propagation.

关键词: time reversibility;    eigenvalue decomposition;    Hankel matrix;    backscatter sounding;    detection and recognition;   

DOI  :  10.1587/elex.8.1267

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Cited-By(1)Recognition of ionosphere phase contamination and multimode propagation is an important step in rejection of clutter spectrum spread for OTHR. Based on the algorithm of time reversibility, this paper proposes a method based on eigenvalue decomposition to detect multimode propagation. Besides, a cascaded technique composed of the two methods above is proposed to recognise contaminations. Another detection algorithm based on time series Hankel matrix is proposed, which will be suitable for more widely application. For the first time, the method based on backscatter sounding is also proposed for multimode recognition, and a hybrid method based on time reversibility and Hankel matrix is also proposed to distinguish phase contamination and multimode propagation.

【 授权许可】

Unknown