雷达信号检测用CFAR检测器?，单元平均恒虚警检测——CA-CFAR检测器：包括对于无目标、仅有噪声的信号进行CA-CFAR检测的仿真(CFAR detector for radar signal detection, unit average constant false alarm detection - CA-CFAR detector: Simulation of CA-CFAR detection for signals with no target and only noise)