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Method for determining absolute orbit and relative orbit of formation flight satellite

A method for determining a relative orbit and a technique for determining relative orbits, which are applied in the field of orbit determination of satellites flying in formation to achieve the effect of easy implementation and simple method.

Active Publication Date: 2012-01-18
AEROSPACE DONGFANGHONG SATELLITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above research methods have high requirements for measuring equipment: either need to use third-party measuring equipment, or require relative measuring equipment to provide functions such as distance measurement and angle measurement; but for relative and absolute orbit calculations that only rely on relative distance measurement, there is no relevant Research

Method used

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  • Method for determining absolute orbit and relative orbit of formation flight satellite
  • Method for determining absolute orbit and relative orbit of formation flight satellite
  • Method for determining absolute orbit and relative orbit of formation flight satellite

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Experimental program
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Effect test

Embodiment

[0158] The true values ​​of the instantaneous orbital elements of satellite a and satellite b selected in this embodiment at the initial moment are:

[0159]

[0160] The true value of the interstellar distance is figure 2 shown. The calculation input of this embodiment is an inter-satellite pseudorange with a sampling interval of 32s, an average value of 0, and a variance of 3m.

[0161] Applying the method of the present invention to calculate the inter-satellite pseudorange within 4 orbital periods, the estimation of the instantaneous orbital elements of satellite a and satellite b at the initial moment is as follows:

[0162]

[0163] After 10 iterations, the calculated value is as follows:

[0164]

[0165]

[0166] The calculation results of absolute orbital radicals are compared as follows:

[0167]

[0168] The calculation results of relative orbital elements are compared as follows:

[0169] project

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Abstract

The invention discloses a method for determining an absolute orbit and a relative orbit of a formation flight satellite. According to the method, aiming at a formation flight task of equipment for measuring interstellar relative distance, an absolute orbit number and a relative orbit number of two formation satellites are obtained by resolving a relative measure value of the interstellar distance. The measure value of relative distance is only needed in the resolving process and a third-party signal source is avoided, so that a receiving party of the interstellar distance can separately determine the absolute orbit number and the relative orbit number of the formation flight task without support of a ground tracking telemetry and command station, a GPS (Global Position System) and other auxiliary equipment.

Description

technical field [0001] The invention relates to a method for determining orbits of formation flying satellites. Background technique [0002] Formation flight is an important development direction in the field of small satellites in the future. Multiple satellites complete cluster flights of kilometers to hundreds of kilometers in a certain organizational form, and exchange information with each other to jointly realize tasks such as earth observation and target positioning. [0003] In order to form a stable and effective measurement baseline, each component satellite needs to complete the control of the relative state based on the relative state, and the calculation accuracy of the relative state will be an important factor in determining the success or failure of the formation mission. [0004] The absolute orbit determination of existing formation flying satellites often requires the help of third-party signal sources such as ground stations and global navigation satelli...

Claims

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Application Information

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IPC IPC(8): G01C21/24
Inventor 谭田徐明李延东陶成华蒙薇
Owner AEROSPACE DONGFANGHONG SATELLITE
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