An X-ray active navigation system in ultra-deep space

Abstract

The invention relates to an ultra-deep-field X-ray active navigation system. The ultra-deep-field X-ray active navigation system comprises an X-ray signal generator, a two-dimensional directing mechanism, an X-ray signal receiving and processing system and a two-dimensional directing mechanism, wherein the X-ray signal generator and the two-dimensional directing mechanism are mounted on a navigational satellite, and the X-ray signal receiving and processing system and the two-dimensional directing mechanism are mounted on an ultra-deep-field spacecraft; the X-ray signal generator on the navigational satellite is used for generating and emitting high-stability modulation X-ray pulse signals, the X-ray signal receiving and processing system on the ultra-deep-field spacecraft is used for receiving X-ray photon signals, estimating arrival time of the X-ray pulse signals and automatically working out position, speed, time and attitude information by virtue of combined observation of measured data of at least four navigational satellites. According to a method, the problems that the transmission attenuation of a traditional microwave frequency band is large in a deep field, the received signals are weak, are required to be supported by aperture antennas on ground and are easily interfered, and the like are solved; by virtue of superiorities that X-ray photon have no transmission attenuation and chromatic dispersion in a free space, are beneficial to miniaturized detection, are unlikely to be intercepted and the like, the autonomous navigation and the reliable remote data transmission of deep-field spacecrafts are realized.

Description

technical field [0001] The invention belongs to the technical field of autonomous navigation of spacecraft, and in particular relates to a system for realizing autonomous navigation of spacecraft by using X-rays as a transmission carrier. Background technique [0002] With the continuous expansion of future deep space exploration missions, more detection targets and more diverse detection modes have put forward higher requirements for spacecraft navigation and communication capabilities. The current traditional ground measurement and control network and microwave transmission links have reached their performance limits. , seeking new ways to further improve spacecraft autonomous navigation capabilities and space information transmission capabilities has become a key issue to be solved in future deep space exploration. Space-based TT&C and data transmission is a feasible way for the development of deep space TT&C in the future. Compared with the ground-based deep space TT&C n...

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the technology of the present invention is: aiming at the requirements of autonomous navigation and information transmission in the future, and overcoming the deficiencies of existing technologies, a method for autonomous navigation of ultra-deep space spacecraft is proposed, which uses X-rays as the transmission carrier and realizes deep space navigation through the constellation of navigation satellites. The orbital coverage of space vehicles solves the problems of limited transmission capacity of microwave links, limited coverage of traditional ground measurement and control, and high cost of launching space-based measurement and control satellites alone. The system structure is simple and the project is highly achievable

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