4Chen Y Q,Y C Liu.Correction for the Seabed Distortion Caused by the Angular Beam-width of Echo Sounders[J].The Hydrographic Journal,1997,(4):15~23.
5Chen Y Q,Y C Liu.Improvement of Accuracy and Reliability of Hydrographic Survey in Near Shore Water and Harbor Areas[R].Research Report LSGI.The Hong Kong Polytechnic University,1996.