Inverted VLBI deep space unidirectional navigation positioning method

Abstract

The invention provides an inverted VLBI deep space unidirectional navigation positioning method. By the advantages of improvement of deep space distance measurement and speed measurement precision ofa deep space atomic clock as compared with an existing atomic clock, three or more ground deep space station ascending transmitting signals provide navigation positioning service for a deep space detector in a coverage range by a broadcasting mode, the deep space detector receives ascending signals of the more than three deep space stations, base line information among the more than three deep space stations is utilized fully, and on-orbit real-time self-localization is realized by unidirectional inverted VLBI angle measurement and unidirectional ascending range measurement information. The advantages of unidirectional remote distance measurement are achieved by high stability and high accuracy of the deep space atomic clocks to a maximum extent, and dependence of the deep space detector to the ground deep space stations is relieved.

Description

technical field [0001] The invention relates to an inverted VLBI deep space one-way navigation and positioning method, belonging to the technical field of deep space navigation. Background technique [0002] Navigation and positioning of deep space probes is one of the most important technologies in deep space exploration activities. At present, the navigation and positioning of almost all deep space probes rely on two-way radio measurements to obtain the distance and Doppler measurements of the transmitting station and the probe. However, as the distance between the probe and the earth increases, the delay of two-way propagation also increases. The deep space navigation and positioning based on two-way measurement cannot meet the requirements of deep space exploration tasks with high real-time performance. It is the navigation task when the probe or astronaut needs real-time position information to land safely at the destination. Therefore, it is of great value and signif...

AI Technical Summary

Problems solved by technology

This method uses the baseline information of multiple deep space stations to solve the problem of non-convergent iterations and inability to solve the problem caused by excessive DOP when performing long-distance positioning based on the one-way ranging system, and solves the problem of poor timeliness of two-way navigation in deep space. The problem

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