[关键词]
[摘要]
针对一个波束宽度内存在多目标的情况,提出了一种基于时空级联处理的用单天线、单接收通道实现目标角度和多普勒频率联合超分辨估计的方法.与阵列天线利用目标反射波的相位关系不同,单天线、单通道方法是根据天线扫描时,对回波脉冲的增益变化而构造导向矢量阵的,此时若直接采用常规空间谱估计方法,则实现的是信号多普勒频率的超分辨,角度估计效果较差.时空级联处理方法可充分利用信号的时域结构信息,明显提高角度的估计性能,并且无需高维搜索,计算量小.计算机仿真结果证明了新算法的有效性和正确性.
[Key word]
[Abstract]
Aiming at the problem of multiple targets present in the mainlobe of a rotating antenna,a method based on temporal-spatial sequential processing to superresolve target position and Doppler frequencies is proposed,which uses only one receiver channel. Compared with using on the phase relation in array antenna,this single antenna-channel method employs the fact that the mechanical scanning antenna impresses an amplitude modulation on the signals backscattered by the targets,but it merely superresolves Doppler...
[中图分类号]
TN957.51
[基金项目]
国家自然科学基金，军队重点科研项目基金?
