Autonomous navigation system and its autonomous navigation method based on space laser communication terminal

Abstract

The invention discloses an autonomous navigation system and an autonomous navigation method thereof based on a laser space communication transceiver. Based on the traditional laser space communication transceiver, a star capturing system is added, so that fixed stars and planets or satellites thereof can be recognized and the azimuth information can be obtained; by calculating the included angle among the fixed stars-space crafts-planets (or planets thereof), the position information of the space crafts can be obtained finally so as to achieve the navigation process. The laser space communication transceiver can obtain the navigation information without a set of additional autonomous navigation device, so that the relevant research, development, launch and running expense is saved, and the volume, weight and power consumption of the effective load of the aircrafts are reduced; the integral performance of the autonomous navigation system is improved; approximate real-time flight track correction is provided for deep space exploration according to the navigation result, so that not only can the signal round-trip delay between satellites and the ground be eliminated, but also ground data processing can be omitted.

Description

technical field [0001] The invention relates to spacecraft autonomous navigation technology, in particular to an autonomous navigation system and an autonomous navigation method based on a space laser communication terminal. Background technique [0002] With the continuous development of aerospace technology and deep space exploration technology, the performance requirements for spacecraft navigation are also getting higher and higher. The autonomous navigation of spacecraft has been widely valued because of its advantages of real-time, low cost and strong survivability. As early as in the 1970s, LeMay summarized the spacecraft autonomous navigation device into the following four characteristics: (1) autonomous control; (2) real-time operation; (3) without the aid of communication with other stars; (4) without Rely on ground stations. The autonomous navigation of a spacecraft relies on spaceborne equipment and technology to provide accurate orbit and attitude parameters f...

AI Technical Summary

Problems solved by technology

[0003] The main method of celestial navigation is to use star sensors, sun sensors, earth sensors, magnetometers, laser altimeters and other instruments to realize autonomous navigation functions. This method is characterized by the need to use special and independent equipment, and its consequences are undoubtedly It increases the overall cost, volume, weight and power consumption of the spacecraft, as well as the cost of launch and maintenance

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