与机载平台雷达探测时的空时二维耦合杂波特性不同,天基平台雷达探测时地球自转对杂波的多普勒谱调制影响,导致杂波频谱进一步展宽,杂波抑制变得更加复杂。文中主要研究地球自转对PD体制天基平台雷达杂波回波特性的影响,并进行了仿真,首次得到PD体制下天基平台杂波回波的距离多普勒谱图,为天基雷达杂波抑制和目标检测提供理论基础和依据。

The earth rotation affects the clutter Doppler frequency, which causes clutter Doppler frequency wider, especially for space-based radar. This effect makes clutter mitigation more difficult which directly affects the performance of target detection. The effect of the earth rotation on the clutter characteristic is studied in this paper, and the conclusions provide support for SBR clutter suppression and moving target detection.

TJ761. 3