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Autonomous relative navigation method for multi-information fusion formation spacecrafts

A multi-information fusion and relative navigation technology, applied in the field of autonomous relative navigation of multi-information fusion formation spacecraft, can solve the problems of low navigation accuracy and no redundant navigation information

Inactive Publication Date: 2011-10-26
HARBIN INST OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing relative navigation adopts GNSS+ inter-satellite link, and there is no navigation redundancy information, resulting in low navigation accuracy, and provides a multi-information fusion formation spacecraft autonomous relative navigation method

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  • Autonomous relative navigation method for multi-information fusion formation spacecrafts
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  • Autonomous relative navigation method for multi-information fusion formation spacecrafts

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specific Embodiment approach 1

[0015] Specific implementation mode one: the following combination Figure 1 to Figure 3 Describe this embodiment, each spacecraft node involved in the method of this embodiment is provided with a pulsar navigation system 1, a GNSS satellite navigation system 2, a laser link system 3, a microwave link system 4 and a star management system 5, The realization process of the autonomous relative navigation method of multi-information fusion formation spacecraft is as follows:

[0016] Use the pulsar navigation system 1 to obtain the absolute navigation information of the spacecraft node, which is used to provide the spacecraft's low-earth orbit and deep space autonomous relative navigation; at the same time, complete the autonomous time synchronization of the spacecraft node;

[0017] Use the GNSS satellite navigation system 2 to obtain the absolute navigation information of the spacecraft node, which is used to provide the spacecraft's low-earth orbit and deep space autonomous re...

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Abstract

The invention discloses an autonomous relative navigation method for multi-information fusion formation spacecrafts, belonging to the field of aviation and space and aiming at solving the problem that current relative navigation in a manner of GNSS plus inter-satellite link leads to no navigation redundancy information so that navigation precision is low. The method according to the invention comprises the steps: absolute navigation information of nodes of a spacecraft is obtained by utilizing a pulsar navigation system and a GNSS satellite navigation system; time synchronous information and distance information in relation to the nodes of other spacecrafts are obtained via a laser link system or a microwave link system and are used for the relative navigation of formation flying of the spacecrafts; the absolute navigation information completes inter-satellite information interaction with the nodes of other spacecrafts via the laser link system or the microwave link system in order toacquire inter-satellite information interaction data of the nodes of other spacecrafts; and in combination with the inter-satellite information interaction data of the nodes of other spacecrafts, therelative navigation information is acquired by processing the absolute navigation information via a house-keeping management system and is used for the relative navigation of formation flying of the spacecrafts.

Description

technical field [0001] The invention relates to a multi-information fusion formation spacecraft autonomous relative navigation method, which belongs to the field of aerospace. Background technique [0002] Formation flight technology is an innovative means for the development of spacecraft to realize system applications. Usually, spacecraft formation flight is a space system composed of multiple spacecraft that are not physically connected and jointly realize the same space mission. It is an inevitable development of space technology in the 21st century. . During the formation flight of spacecraft, each spacecraft in the system needs to carry out independent relative navigation, and based on a certain cooperative control strategy, finally realize the overall cooperative control and cooperate with each other to complete the task. [0003] As a new space application concept, formation flight has great challenges in application theory and engineering technology. In particular...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/24
Inventor 兰盛昌潘瑞李炯卉陈雪芹马玉海许海玉林杰
Owner HARBIN INST OF TECH
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