一种距离相位编码距离模糊抑制技术

A range ambiguity suppression technology based on range phase coding

提出一种距离相位编码距离模糊抑制技术,该技术通过发射距离相位编码多波形信号,造成距离模糊信号相对于目标信号在距离频域产生频谱偏移。再针对目标信号构造匹配滤波函数和对应其频谱支撑区间的滤波器,滤除部分距离模糊能量并造成距离模糊信号脉压后散焦,从而实现距离模糊的有效抑制,提高合成孔径雷达(SAR)图像质量。最后给出面仿真结果,证明该方法的可行性和有效性。

A range ambiguity suppression technology based on range phase coding for synthetic aperture radar（SAR） is presented in this paper. The range phase coded multi-waveform signal is transmitted by means of the technology,which leads to the spectral offset of the range ambiguity signal relative to target signal in range frequency domain. The matched filtering function and filter corresponding to spectrum support section are constructed for the target signal to filter out the segmental range ambiguous energy and defocus the range ambiguity signal after pulse pressure,so as to suppress the range ambiguity effectively and improve the SAR image quality. The planar simulation result is given in this paper,which proves that the method is feasible and effective.