Investigation of Correction Method of the Spacecraft Low Altitude Ranging

TL;DR

This paper proposes a gamma ray-based correction method for spacecraft low altitude measurement and landing control, using a theoretical model validated by experiments to improve landing accuracy in deep space missions.

Contribution

It introduces a novel altitude correction algorithm based on gamma ray reflection gradients, validated through mathematical derivation and experimental verification.

Findings

Algorithm is feasible and effective for altitude correction.

Method adapts to different landing speeds and parameters.

Provides valuable data for spacecraft landing control.

Abstract

gamma ray altitude control system is an important equipment for deep space exploration and sample return mission, its main purpose is a low altitude measurement of the spacecraft based on Compton Effect at the moment when it lands on extraterrestrial celestial or sampling returns to the Earth land, and an ignition altitude correction of the spacecraft retrograde landing rocket at different landing speeds. This paper presents an ignition altitude correction method of the spacecraft at different landing speeds, based on the number of particles gamma ray reflected field gradient graded. Through the establishment of a theoretical model, its algorithm feasibility is proved by a mathematical derivation and verified by an experiment, and also the adaptability of the algorithm under different parameters is described. The method provides a certain value for landing control of the deep space exploration spacecraft landing the planet surface.