Seabed topographic contour match based on angle code technique

Seabed topographic match is a very important work for fulfilling the blend of different-source sounding data and the underwater positioning and navigation. Contour match is a classic method for the seabed topographic match. However, the traditional contour match algorithm will lead to obvious time consuming and mismatch, especially in the longer contour match. Thus, a kind of contour match algorithm based on angle code technique is presented and studied in this paper. Firstly, the principle of this match method is detailed. Then some key problems are studied, and the matching procedure is given out. Besides, the method was used for a simulation experiment of underwater topographic matching navigation, the satisfying results are achieved.