摘要
声纳浮标是用于探测和识别水下移动目标的重要手段,被广泛应用于航空反潜领域。DIFAR(Directional Frequency Analysis and Recording)浮标就是一种典型的声纳浮标,也被称为被动定向浮标,应用于目标的初始定位。AN/SSQ-53系列声纳浮标作为DIFAR浮标的一种,是由三个声传感器集成的小型基阵,包括一个全向水听器和一对正交偶极子,其中全向水听器提供接收信号的全向声压信息,正交偶极子提供接收信号的方向信息,使其可以对目标进行方位估计。这三个声传感器分别构成三个相互独立的声信号通道:全向通道、正弦通道和余弦通道。论文介绍了DIFAR浮标目标方位估计的两种方法:FFT/B-Scan和FOS/B-Scan,通过仿真对比得出,在一定条件下FOS/B-Scan算法比FFT/B-Scan算法在目标方位估计方面性能更佳。
The sonobuoy is an impportant means for detecting and recognizing underwater moving targets,and it is widely used in aviation antisubmarine fields.The DIFAR sonobuoy is a typical sonobuoy,it is also called directional passive sonar unit which is used for search,detection and classification.The AN/SSQ-53 series DIFAR sonobuoy is a small array which uses three acoustic sensors containing an omin-directional hydrophone and a pair of separate cruciform shaped dipoles.The omin-directional hydrophone measures only the amplitude of the acoustic pressure waves,regardless of the direction of arrival.The dipoles provide directional information of the incident acoustic to estimate the bearing of the target.The three acoustic sensors respectively consist of three separate channels are referred to as the omin,sine,and cosine channels,respectively.In this paper,two methods of bearing estimation for DIFAR sonobuoy are introduced,which are FFT/B-Scan and FOS/B-Scan.The result indicates the FOS/B-Scan is better than FFT/B-Scan about bearing estimation.
作者
吴双
刘珏
刘本奇
WU Shuang;LIU Jue;LIU Benqi(Shanghai Marine Electronic Equipment Research Institute,Shanghai 201108;Science and Technology on Underwater Acoustic Antagonizing Laboratory,Shanghai 201108)
出处
《舰船电子工程》
2019年第1期35-39,共5页
Ship Electronic Engineering
