浅析SHADOWS合成孔径声纳的数据成像处理技术
|
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.
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.
引文
[1]牟健,贺惠忠,姜峰.SHADOWS合成孔径声纳系统及性能测试[J].中国海洋大学学报,2011,Z2:159-163.
[2]钱刚.合成孔径声纳技术研究[D].西安:西北工业大学硕士学位论文,2003.
[3]Bucknam J N.SHADOWS Synthetic Aperture Sonar System Operator manual[M].FRANCE:IXSEA,2010:1-10.
[4]武法东,付宗堂,王小牛,等.地理信息系统基本原理[M].北京:电子工业出版社,2001.
[5]PINTO M A.High resolution seafloor imaging with synthetic aperture sonar[J].IEEE Oceanic Engineering Society Newsletter,2002,3:15-20.
[6]张春华,刘纪元.(第二讲)合成孔径声纳成像及其研究进展[J].物理,声纳技术及其应用专题,2006,35(5):408-413.
[7]Lars M H Ulander,Hans Hellsten,G Stenstrom.Synthetic-aperture radar processing using fast factorized back-projection[J].IEEE Transaction onAerospace and Electronic Systems,2003,39(3):760-776.
[2]钱刚.合成孔径声纳技术研究[D].西安:西北工业大学硕士学位论文,2003.
[3]Bucknam J N.SHADOWS Synthetic Aperture Sonar System Operator manual[M].FRANCE:IXSEA,2010:1-10.
[4]武法东,付宗堂,王小牛,等.地理信息系统基本原理[M].北京:电子工业出版社,2001.
[5]PINTO M A.High resolution seafloor imaging with synthetic aperture sonar[J].IEEE Oceanic Engineering Society Newsletter,2002,3:15-20.
[6]张春华,刘纪元.(第二讲)合成孔径声纳成像及其研究进展[J].物理,声纳技术及其应用专题,2006,35(5):408-413.
[7]Lars M H Ulander,Hans Hellsten,G Stenstrom.Synthetic-aperture radar processing using fast factorized back-projection[J].IEEE Transaction onAerospace and Electronic Systems,2003,39(3):760-776.