Mars-surface three-dimensional drawing method

Abstract

The invention discloses a Mars-surface three-dimensional drawing method, comprising the following steps of: establishing a digital elevation model and an image model; utilizing the established digital elevation model and the image model to construct a Mars-surface three-dimensional model; utilizing a Mars-surface information database and a deep-space background database to determine surface information of the Mars-surface three-dimensional model, establishing a deep-space background coordinate taking the Mars as the center and determining a time reference point; and according to the longitude and latitude of the determined display point, generating the deep-space background and calculating the light blocking condition including the display point. According to the Mars-surface three-dimensional drawing method, for the Mars detection mode such as 'landing detection' and 'suspending detection', the simulation display for the Mars surface is realized by simulation of the surface characteristics and the environment of the Mars.

Description

technical field [0001] The invention relates to a three-dimensional rendering method of the surface of Mars. Background technique [0002] The 3D simulator of the surface characteristics of Mars exploration is an important part of the early numerical simulation and simulation of my country's deep space Mars exploration mission, and it has certain strategic significance for the exploration of Mars. As the Mars exploration mission is about to be implemented, the computer 3D visual simulation technology for Mars exploration is becoming more and more popular in the aerospace field. [0003] At present, there are three modes of Mars exploration. Mode 1: Surrounding exploration, that is, the aircraft flies over Mars, and observes Mars in the orbit around the fire; Mode 2: Landing exploration, that is, the aircraft directly re-enters the surface of Mars, and on the surface of Mars. Detection; Mode 3: Floating detection, that is, after the aircraft re-enters, it conducts observatio...

AI Technical Summary

Problems solved by technology

[0004] Most of the 3D visualization simulation research in the aerospace field focuses on the simulation level of spacecraft orbital dynamics, and pays more attention to satellites and their orbits. As for the realistic simulation of the mission orbit process, simply speaking, the simulation of Mars adopts the traditional mode of "mission + orbit". Mode 3 "floating detection", this traditional method ignores the simulation and simulation of the target environment (Mars), which brings hidden dangers that cannot be ignored for landing detection and floating detection

[0005] At the same time, although the current deep space exploration software can calculate the illumination value at a certain point on Mars at a certain moment, this value is based on the assumption that the surface of Mars is a smooth sphere

Moreover, the illumination value obtained through calculation has relatively low reference value when applied to Mars exploration with complex terrain, especially in the case of mode 2 "landing detection" and mode 3 "floating detection"

[0006] In addition, the current Mars mission simulation system is mostly operated by mouse and keyboard, which requires a certain amount of operating experience and training for the operator. Proficient operation requires memorizing a series of shortcut keys and combination keys, which is not conducive to the rapid operation of operators who are not familiar with the simulation system. Finding information reduces the operability of the system

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