Spaceborne laser altimeter in-orbit moon elevation detection uncertainty evaluation method

Abstract

The invention discloses a spaceborne laser altimeter in-orbit moon elevation detection uncertainty evaluation method which comprises the following steps of: screening an area of which the terrain change is flat from a laser altimeter moon surface elevation detection full-moon area; eliminating a pseudo elevation and calculating the area elevation mean value and the standard deviation in the screened area; analyzing various uncertainty influence factors influencing the elevation detection and the distribution density; and carrying out laser altimeter in-orbit moon elevation detection uncertainty evaluation in combination with the various influence factors and by utilizing the ''Monte Carlo Method for Evaluation of Measurement Uncertainty''specification and giving the elevation results. The method has the advantage that the elevation detection uncertainty can be given to the spaceborne laser altimeter in-orbit moon surface terrain elevation detection according to the selected area to provide a basis for further analyzing the source of laser altimeter measurement error and provide a reference and a basis for making a high-precision moon digital elevation map.

Description

technical field [0001] The invention relates to a method for evaluating uncertainty of on-orbit lunar elevation detection by a spaceborne laser altimeter, in particular to a method for evaluating uncertainty of on-orbit lunar elevation detection by a laser altimeter carried by CE-1. Background technique [0002] The successful launch and operation of the "Chang'e-1" lunar exploration satellite is my country's first exploration of the lunar space environment within 400,000 kilometers from the earth. The earth-moon space environment will be an important place for our country to carry out space activities in the future, and in this space region, there are strong activities such as cosmic rays, solar flares and coronal mass ejections, which are often accompanied by huge space radiation energy and high-energy Sudden release of particles. It is precisely because the "Chang'e-1" lunar exploration satellite works in the above-mentioned relatively harsh space environment, the uncert...

AI Technical Summary

Problems solved by technology

These studies mainly focus on how to use various measurement data to control and support the flight orbit of lunar satellites. However, no systematic and in-depth research has been conducted on the errors in the on-orbit measurement data and their reuse technologies.

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