第二讲合成孔径声纳成像及其研究进展

文章在介绍了图像声纳的特点、合成孔径声纳（synthetic aperture sonar,SAS）产生背景和发展过程的基础上,对合成孔径声纳的原理、技术难点、成像算法等问题进行了讨论.着重分析了合成孔径声纳成像过程中高分辨率的获取方法、水声信道对成像的影响、多子阵技术及其成像算法、稳定的声纳运动平台和运动监测问题、运动补偿与自聚焦方法等.文章还给出了国内外合成孔径声纳研究的最新进展情况,进而展望了合成孔径声纳的应用前景.

Synthetic aperture sonar imaging and its developments

The features of imaging sonar, and the background and early development of synthetic aperture onar (SAS) are reviewed. The principle, difficulties and imaging algorithms of SAS are discussed, with special emphasis on ways to achieve high resolution, the influence of underwater acoustic channels on imaging, multi sub-array techniques and corresponding imaging algorithms, stable motion platforms and motion sensors, and motion compensation and autofocusing. The latest developments and future prospects of SAS are also presented.