Study on Improvement of Multibeam Backscatter Angular Response Model

• Main Authors: YAN Jun, ZHANG Hongmei, ZHAO Jianhu, MENG Junxia
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2016-11-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: multibeam image; backscatter; angular response parameters; model improvement
• Online Access: http://html.rhhz.net/CHXB/html/2016-11-1301.htm

Because multibeam backscatter data is greatly affected by the AR (angular response) and the AR correction models are not perfect in the complex seabed, the multibeam image quality is seriously reduced. This paper puts forward an improved AR model and a correction method. Firstly, we average continual pings to obtain the AR curve; Secondly, we give out the extraction method of AR parameters; Thirdly, we use the parameters to establish the improved AR model of different sections of one ping; Finally, we use the model to weaken the AR effect in multibeam backscatter images. The validities of the method have been verified by the experiments of the field multibeam acoustic backscatter.