高分辨距离像的运动参数估计

Movement Parameter Estimation in High Resolution Range Profile

本文研究了加性高斯色噪声背景中一维高分辨距离成像中的运动估计 .导弹和目标的相对运动对一维高分辨距离成像有较大影响 ,阶跃变频体制回波信号可以表示为多项式相位的形式 ,速度和加速度的影响分别体现在二次和三次多项式相位上 .循环平稳处理方法对高斯色噪声不敏感 ,对非高斯色噪声也有较强的抑制作用 ,而且在低信噪比情况下工作良好 .应用于低信噪比环境中 .为了在复杂的地面环境中得到较好的距离像 ,本文采用循环平稳处理方法在较强的噪声背景下对速度进行估计 。

This paper studies the movement estimation of the high resolution radar signal with additional Gaussian color noise. Movement between the missile and the target has notable influence on the range profile. The stepped frequency echo has polynomial phase, and the influence of velocity and acceleration was expressed as the second the third phase. Cyclostationary method is not sensitive to the Gaussian color noise and can do with non-Gaussian color noise as well, which is proved to be effective in low SNR environment. In this paper, the cyclostationary method is used to estimate the movement parameters from the phase in low SNR environment and to get ideal range profile as the result.