In order to achieve the optimal cutting of Cobalt crusts,it is necessary to explore the tiny-terrain of the seabed and constrct an accurate regular grid DEM of the tiny-terrain. Inaccuracy of measurement would be brought in, as the tiny-terrain exploring system fixed on the mining vehicle would bump along with the mining vehicle advancing due to the rugged submarine topography. For the compensation of the tiny-terrain exploration data, it is proposed to utilize the electronic compass to measure the ...