专利详情

专利名称	Method of signal processing for high resolution bathymetric sidescan sonar
申请号	US20060490078	专利类型	US
公开（公告）号	US2007091723	公开（授权）日	2007.04.26
申请（专利权）人	中国科学院声学研究所	发明（设计）人	ZHU WEIQING (CN);LIU XIAODONG (CN);XU WEN (CN)
主分类号	G01S15/89	IPC主分类号	G01S15/89;G01S15/00
专利有效期	Method of signal processing for high resolution bathymetric sidescan sonar 至Method of signal processing for high resolution bathymetric sidescan sonar	法律状态
说明书摘要	A processing method of this invention relates to an angle of arrival estimation technique, where by a high resolution bathymetric sidescan sonar signal process method it measure the micro-geomorphy of the sea bottom. This is the multi-subarray sub-space fitting method. The invention shows that when the array elements number is fixed, no matter there is mutual coupling or not between array elements, there exists one sub-array which has the smallest phase estimation standard deviation, the method of this invention overcomes the phase error caused by mutual coupling and enhances the measurement precision.