A Correction Method of Positioning for Deep-Sea Camera Data

The deep-sea camera is the most intuitive and effective detection tool for seabed investigation, accuracy of positioning can ensure its data value. A bundled ultra-short baseline (USBL) system generally employed to realize spatial an underwater camera. influence acoustic environment other factors cause USBL become unstable, leading abnormalities, or missing data, which creates difficulties positioning. In order solve problem, this paper selects “XunMei” mineralization area acquired from China south Atlantic voyage. Moreover, combined with high-precision terrain, bathymetry, ship-borne GPS were analyzed mined comprehensively. eliminate abnormal a four-dimensional anomaly culling model established based on time space scales through ArcGIS tool. Then, modeling, simulation, interpolation prediction are performed after elimination achieve geographic location correction hydrothermal sulfide near-bottom data. This method has achieved good results in practical applications. corrected water depth profile survey line compatible terrain detected at different times same area. characteristics video images sample TV grab sampling position. set high-quality (sampling test 5000 points) not participating compared following obtained: case confidence interval 95%, correlation coefficient 1, significance 0, there no significant difference between simulation original (not model), error below 5 m. shows that problem locating submarine be solved using proposed high precision bathymetry corresponding cubic polynomial least-squares model.