摘要
与传统的成像声纳相比,合成孔径声纳(Synthetic Aperture Sonar,SAS)具有成像分辨率高、分辨率恒定等优点;但其成像处理数据量大,处理技术复杂,致使后处理工作量大、成图慢。基于我国引进的第一套SHADOWS合成孔径声纳系统,介绍了该系统的成像处理技术,分析了该技术的特点和难点;并采用XTF格式原始数据文件和快速分块反向传播投影(FFBP)算法进行图像后处理。相对于传统的实验室理论仿真实验,通过海试验证了该技术的可行性和适用性,并提出了存在的问题及解决办法。
Compared to the traditional sonar imaging, Synthetic Aperture Sonar （SAS） system has the advantages of higher image resolution, and the resolution is constant, etc.; However, the large volumes data of imaging processing and the complex of processing have influence on the work efficiency. The imaging processing technology of the first set of the SHADOWS synthetic aperture sonar system in China was introduced, the characteristics and difficulties of the technology was analyzed. The XTF raw data files and fast factorized back projection （FFBP） algorithm were used for image post-processing. In-situ sea test has proven the feasibility and applicability of the technology.
出处
《海洋技术》
北大核心
2013年第2期56-59,72,共5页
Ocean Technology
基金
国家海洋局重点青年科技基金资助项目(2011401)
国家海洋局南海分局海洋科学技术局长基金资助项目(1217)
关键词
合成孔径声纳
数据成像
处理技术
synthetic aperture sonar
data imaging
processing technology
