非相干MIMO雷达模糊函数特性优化

距离折叠、多普勒频率混杂和匹配滤波杂波抑制性能是雷达在杂波条件下的基本性能.为揭示非相干MIMO雷达的此类性能,对非相干MIMO雷达的模糊函数特性均进行深入研究和优化设计,包括无模糊时延、无模糊多普勒、无模糊区区面积和无模糊区内的副瓣水平等特性.经过波形优化设计,在时延-多普勒平面上,非相干MIMO雷达的无模糊区面积被优化为1(无单位),无模糊区内的副瓣水平与SIMO雷达相当.因此,非相干MIMO雷达的距离折叠、多普勒频率混杂和匹配滤波杂波抑制性能与SIMO雷达相当.仿真结果表明,非相干MIMO雷达的无模糊区面积被优化为1. 

Optimization on the Ambiguity Properties of Non-Coherent MIMO Radar

For shedding light on the properties of range-folding, Doppler-frequency aliasing, and clutter rejection in match filtering of the MIMO radar, the paper was focused on analyzing and optimizing the ambiguity properties of the non-coherent MIMO radar, including the unambiguous delay interval and Doppler interval, the unambiguous area and the sidelobe level in the unambiguous area. As a result, the unambiguous area of the non-coherent MIMO radar in the delay-Doppler plane was optimized to be 1(dimensionless), and the sidelobe level in the unambiguous area was optimized to equal the sidelobe level of the SIMO radar, thus the non-coherent MIMO radar can match the SIMO radar in the performance of range-folding, Doppler-frequency aliasing, and clutter rejection in match filtering. And the simulation of the non-coherent MIMO radar ambiguity function displays an unambiguous area of 1.