摘要
在合成孔径声纳(Synthetic Aperture Sonar,SAS)的成像处理中,声纳基阵的不稳定是影响成像质量的重要因素,运动误差的存在会直接导致图像的畸变和分辨率下降,在实际的SAS成像中必须考虑运动误差的影响。结合SAS成像的特点,分析了传统运动补偿算法的不足,并提出了针对强点目标的局部优化方案,最后通过仿真和试验数据进行了有效性验证。
The instabilities of the towfish is has an important effect on the image quality in SAS image processing. The motion errors can distort the images and lower the resolution. So it is very necessary to compensate the motion errors in SAS imaging. Based on the features of SAS imaging model, the traditional motion compensation algorithms are analyzed and an optimized algorithm for strong point target is proposed. The validity of the algorithm is examined through computer simulation and lake-trials data processing.
出处
《声学技术》
CSCD
北大核心
2008年第3期315-318,共4页
Technical Acoustics
基金
国家863项目(2002AA631110)
