噪声调频连续波雷达空间目标探测性能分析

在轨雷达探测空间目标时,目标相对雷达的速度高、距离远,采用通常的周期性信号雷达对其探测会产生距离模糊或速度模糊,采用解模糊的方法会增加系统的复杂性.文中采用噪声调频连续波雷达对空间目标进行探测,其发射信号无周期,作用距离无模糊.从体制上分析,其町测定远距离高速目标,并讨论其检测性能,与常规线性调频连续波雷达进行了仿真比较,证明了噪声调频连续波雷达对空间目标探测的有效性.

Space Target Detection Performance Analysis of Noise FMCW Radar

Due to very high speed and very long range of space targets relative to the orbital radar, it is difficult for periodic signal radars with periodic range ambiguity and velocity ambiguity to detect them. Although there are some methods to resolve the ambigu-ity, it will increase the system complexity. An approach to detect space targets by noise frequency-modulation continuous wave (NFMCW) radar is presented. Its transmitted signal has no period and no range ambiguity, and it can detect high-speed and long range targets in principle. The detection performances of NFMCW radar are analyzed and compared with linear frequency-modula-tion continuous wave (LFMCW) radar. The simulation results show the effectiveness of NFMCW radar for detecting space targets.