【摘要】 研究了反直升机雷(AHM)的抗干扰问题和分析了直升机声音特性后,提出了窄带声探测的方案及实施该方案时所需的软硬结构。并给出了硬件结构中的主要器件及参数。实验结果说明:系统的方位角探测是有效的,探测精度能够满足实用要求,还可以大大降低数据采集量和存储空间,从而提高系统的实时性和实用性。更多还原

【Abstract】 On the basis of the research of inference defense of the AHM and analysis of the helicopter sound’s properties,a new way of passive acoustic sub-band detection is provided.The structure of software and hardware for the system and their parameters are shown.Experiment results show that the system can detect effectively the azimuth angle of the target; the detection precision can meet practical applications,and collected data for time-delay estimation and memory to store data are reduced by a long way.Sequentially real time’s performance and practicality are improved.更多还原