Numerical simulation method for landing landmark deployment for small celestial body surface landing guidance

The invention discloses a landing landmark deployment numerical simulation method for small celestial body surface landing guidance, which comprises the following steps: establishing a gravel pile small celestial body surface mechanical environment, and building a weathered layer particle bed model; establishing a particle damping landmark ball model used when the detector lands; reading the initial state parameters of the particle damping landmark ball system and the particles of the weathered layer on the surface of the small celestial body of the gravel pile, carrying out particle damping landmark ball deployment simulation, and obtaining an energy loss curve in the particle damping landmark ball deployment process; on the premise that the stacking configuration is kept, physical parameters of the damping particles are changed according to gradients, and the damping performance of the damping particles is optimized; changing physical parameters of particles of the weathered layer according to the gradient