顾福飞, 张群, 梁颖, 杨秋, 孙凤莲. 基于压缩感知的地面运动目标成像方法[J]. 电波科学学报, 2013, 28(4): 760-766.
      引用本文: 顾福飞, 张群, 梁颖, 杨秋, 孙凤莲. 基于压缩感知的地面运动目标成像方法[J]. 电波科学学报, 2013, 28(4): 760-766.
      GU Fufei, ZHANG Qun, LIANG Ying, YANG Qiu, SUN Fenglian. Imaging method of ground moving targets based on compressed sensing[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2013, 28(4): 760-766.
      Citation: GU Fufei, ZHANG Qun, LIANG Ying, YANG Qiu, SUN Fenglian. Imaging method of ground moving targets based on compressed sensing[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2013, 28(4): 760-766.

      基于压缩感知的地面运动目标成像方法

      Imaging method of ground moving targets based on compressed sensing

      • 摘要: 针对地面运动目标成像数据量过大不便于数据存储和传输的问题,提出了一种基于压缩感知的地面运动目标成像方法.该方法对沿距离向脉冲压缩之后的数据进行双通道的相位中心偏置天线杂波对消处理,获取地面运动目标的数据信息,沿方位向进行低维观测获得压缩的回波数据,利用分数阶傅里叶变换矩阵作为稀疏基矩阵,并结合平滑i0算法实现最终的运动目标成像,同时利用获得的最优阶数进行运动目标的参数估计.仿真实验验证了所提方法的有效性和可行性.

         

        Abstract: The amount of echo data is huge in ground moving targets imaging, which severely increases data transmission and storage load. To solve this problem, an imaging method of ground moving targets is proposed based on compressed sensing. Firstly, the displaced phase center antenna (DPCA) technique is induced to cancel the pulse compression echo data in the range direction with dualchannels. Secondly, the echo data in the azimuth direction is compressed by using the low dimensional measurement matrix, and the discrete fractional Fourier transform matrix is adopted as the sparse basis matrix. Then the smoothing L0 algorithm is utilized to reconstruct the moving targets, and the moving parameters of moving targets can be obtained by the optimal orders. Finally, the feasibility and effectiveness of the proposed method is proved by the simulation results.

         

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