Abstract: Surface sampling,applied in situ exploration and sample return mission at this stage,is an important method of acquiring extraterrestrial body characteristics. For big sampler, some constraints are introduced into lunar surface sampling process under uneven terrain. The influences of uneven terrain were analyzed, considering a class of big scaled sampler. The sufficient condition of adoptable surface sampling was proposed, and the establishing method of adoptable point which contains visual subarea division, subarea extension, local average normal vector sparse and base point sphere detection was constructed. Numerical simulations demonstrate the effectiveness of the establishing approach, and the speediness of subarea and parallel computing.

Key words: luna；surface sampling, uneven terrain, adoptable point, parallel computing