摘要
现有的发射波形和回波处理方法在满足潜艇定位、识别需求等方面效果有限,研究组合波形和新的回波处理方式是主动声纳设计的重要内容。为克服HFM波形探测目标时的峰脊线和虚假亮点干扰,提出一种基于HFM的组合波形W-HFM。并且采用宽带模糊函数分析对比单一波形与组合波形的分辨力。简要分析了虚假亮点的形成机理,并提出了不同于匹配滤波的高分辨接收机。仿真结果表明,发射W-HFM波形并采用高分辨接收机处理目标回波不仅能有效抑制“X”型旁瓣干扰,而且基本消除了虚假亮点,获得了多个目标的速度-时延高分辨。
The existing methods of transmitting waveform and echo processing are limited in satisfying the requirements of sub⁃marine positioning and identification.The study of combined waveform and new echo processing method is an important part of ac⁃tive sonar design.In order to overcome the interference of peak ridge and false bright spot in HFM waveform detection,a W-HFM combined waveform based on HFM is proposed.The resolution of single waveform and combination waveform is analyzed by using wideband ambiguity function.The formation mechanism of false bright spot is briefly analyzed and a high resolution receiver differ⁃ent from matched filter is proposed.The simulation results show that using the high-resolution receiver to transmit W-HFM wave⁃form and process the target echo can not only effectively suppress the"X"type side lobe interference,but also eliminate the false bright spot and obtain the high speed-delay resolution of multiple targets.
作者
娄良轲
王平波
LOU Liangke;WANG Pingbo(College of Electronic Engineering,Naval University of Engineering,Wuhan 430033;No.91911 Troops of PLA,Sanya 572000)
出处
《舰船电子工程》
2020年第10期154-158,共5页
Ship Electronic Engineering
关键词
组合波形
波形设计
速度-时延高分辨
宽带模糊函数
combined waveform
waveform design
speed-delay high resolution
wideband ambiguity function
