Method for determining relative orbit elements based on inter-satellite distance

Abstract

The invention discloses a method for determining the relative orbit elements based on inter-satellite distance. The method comprises the following steps: S1, acquiring four extreme values of the distance between two satellites within a sampling period; S2, establishing the relationship between the relative distance and the relative orbit elements; and S3, establishing the mapping relationship between the inter-satellite distance extreme value error and the relative orbit element error, parsing out the relative semi-major axis error and the relative angle-of-tilt error based on the relative orbit element error, and obtaining the relative orbit elements. According to the technical scheme, complex three-dimensional spatial motion is converted into two-dimensional planar motion on the basis of a formation flight relative kinematics equation. The error between the actual value and the nominal value of inter-satellite distance and the error between the actual value and the nominal value of relative orbit elements are converted into linear relationship characterization, and the error between the actual value and the nominal value of relative orbit elements can be directly determined according to the error between the actual value and the nominal value of inter-satellite distance.

Description

technical field [0001] The invention relates to a method for determining the relative orbit elements of satellite formation flight, more particularly, it uses four relative distances between the main star and the slave satellites to determine the relative orbit elements. Background technique [0002] The author Yu Jinpei published "Modern Small Satellite Technology and Application" in March 2004. In "3. Small Satellite System", the composition of the general satellite system is disclosed, such as figure 1 shown. The on-board computer, also known as the on-board computer, is responsible for the storage and processing of on-board data and programs, as well as the coordination and management of various subsystems. A GPS receiver is an instrument that receives signals from the Global Positioning System satellites and determines the position in space on the ground. [0003] The satellite formation flight system needs to maintain a certain configuration during the flight, but du...

AI Technical Summary

Problems solved by technology

This method of directly making a difference to obtain the error is not high in accuracy, and there is too much measurement information, which puts forward higher requirements for the on-board measurement device

Therefore, how to make full use of the on-board measurement information and design a simple, effective and high-precision method for determining the relative orbit element error of the satellite formation system is an urgent need in engineering. There is no clear solution to this problem

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