摘要
在分析侧扫声呐成像的散射模型基础上,给出了海底混响服从瑞利分布的理论依据。分析了其它典型概率分布的合理性并给出了各概率分布参数的估计方法。通过实验来检验比较几种典型的概率分布的最佳拟合。实验结果表明:总体来看,威布尔分布更为精确,但瑞利分布仍保持了较好的拟合特性。特别是当底质粗糙、混响较强时,使用瑞利分布和威布尔分布相当。这一研究结果可为侧扫声呐图像的底质分割提供重要依据。
On the basis of analysis on scattering model of sidescan sonar imaging,theoretical basis for the Rayleigh distribution of seafloor reverberation is given. The rationality of other typical probability distributions is analyzed,and the methods for parameter estimating of the mentioned probability distributions are given. The best fitting of several typical probability distributions are tested and compared by experiments. The experimental results show that the Weibull distribution is generally more accurate,and the Rayleigh distribution still has a good fitting characteristic. The research results can provide an important basis for seabed segmentation of sidescan sonar images.
作者
霍冠英
刘静
李庆武
HUO Guan-ying LIU Jing LI Qing-wu(College of Internet of Things Engineering, Hohai University, Changzhou 213022, China Changzhou Key Laboratory of Sensor Networks and Environmental Sensing, Changzhou 213022, China)
出处
《传感器与微系统》
CSCD
2017年第3期25-28,32,共5页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(41306089)
江苏省自然科学基金资助项目(BK20130240)
关键词
侧扫声呐
海底混响
瑞利分布
威布尔分布
底质分割
sidescan sonar
seafloor reverberation
Rayleigh distribution
Weibull distribution
seabed segmentation
