Micro-Doppler Feature Extraction of Inverse Synthetic Aperture Imaging Laser Radar Using Singular-Spectrum Analysis

Sensors

Baisheng Yang¹  Bo Zang²  Mengdao Xing²  Mingzhe Zhu²  Xianda Zhou² 

[1] Beijing Aerospace Automatic Control Institute, Beijing 100000, China;School of Electronic Engineering, Xidian University, Xi’an 710126, China;

关键词: inverse synthetic aperture imaging laser radar;    micro-Doppler effect;    singular-spectrum analysis;   

DOI  :  10.3390/s18103303

来源: DOAJ

【 摘 要 】

Different from microwave radar, laser radar could be more sensitive to the micro-Doppler (m-D) effect due to its wave length. This limits the application of conventional methods, such as time–frequency based approach, since the processing needs a receiver with much higher sampling frequency than microwave radar. In this paper, a micro-Doppler feature extraction algorithm is proposed for the inverse synthetic aperture imaging laser radar (ISAIL). Singular-spectrum analysis (SSA) is employed for separation and reconstruction of the micro-Doppler and rigid body signal. Clear ISAIL image is obtained by minimum entropy criteria after echo signal decomposition. After theoretical derivation, the computation efficiency and ability of the proposed method is proved by the results of simulation and real data of An-26.

【 授权许可】

Unknown