A Target Detection Algorithm Based on Compressive Sensing for Random Noise Radar
Wu Xin①② Wang Yan-fei① Liu Chang①
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(Graduate University of Chinese Academy of Sciences, Beijing 100039, China)
Abstract：Random noise radar executes pulse compression via direct correlation in time domain for target detection. A novel algorithm is proposed based on compressive sensing for random noise radar system. Projection for low dimension data is adopted instead of correlation; Signal reconstruction is used to substitute signal compression; And much computational load is transferred to background processing. In this algorithm, detected targets in scene satisfy the requirement of sparsity peculiarity, and measurement matrix is constructed by selecting the rows of convolution matrix stochastically. Furthermore, two step iterative shrinkage/thresholding algorithm is applied to reconstruct target signals. With elaborate theoretical derivation, the whole processing of this algorithm is presented. Simulation results are provided to show that the algorithm is able to reconstruct targets efficiently with well computational efficiency. Moreover, factors highly influencing on the results are analyzed. In contrast to correlation operation, reconstruction error is significantly reduced and sidelobes are faithfully suppressed. In addition, phase characters of target information are preserved well.
武昕, 王岩飞, 刘畅. 基于压缩感知理论的随机噪声雷达目标检测算法研究[J]. 电子与信息学报, 2012, 34(7): 1609-1615.
Wu Xin, Wang Yan-Fei, Liu Chang. A Target Detection Algorithm Based on Compressive Sensing for Random Noise Radar. , 2012, 34(7): 1609-1615.
2012, Vol. 34 
