Satellite navigation method and system for wide-area detection on stellar surface

Abstract

The invention discloses a satellite navigation method for wide-area detection on a stellar surface. The satellite navigation method comprises the following steps of: (1), realizing a spatial circular queue through the control of an orbit parameter by adopting a group of navigation satellites, wherein the group of navigation satellites at least comprises a primary navigation satellite and two auxiliary navigation satellites; (2), acquiring the spatial positions of all the navigation satellites; (3), synchronizing time among all the navigation satellites through an inter-satellite link phase-locked communication; (4), issuing time signal information and ephemeris data information to a terminal user by all the navigation satellites; and (5) receiving the time signal information and the ephemeris data information of all the navigation satellites by the terminal user, and resolving the position of the terminal user by utilizing time difference measurement and curve intersection to realize the navigation positioning of the terminal user. By using the method provided by the invention, the all-coverage satellite navigation on the stellar surface of a reference star where the terminal user needing the navigation is positioned can be realized; further, a system scale is small; the economical efficiency is good; and the construction cost is low.

Description

technical field [0001] The invention relates to the technical field of satellite navigation in aerospace technology, in particular to a satellite navigation method and system for wide-area detection on the surface of a planet. Background technique [0002] With the deepening of deep space exploration, it is necessary to log in and detect some important planets, carry out long-term resident research, and even establish long-term bases. At that time, it is very necessary to know the location of the probes or other detection units that carry out large-scale research on the surface of the planet, that is, to navigate and locate the user on the surface of the planet. And this kind of exploration mission has slightly different requirements for navigation and positioning. Its requirements for real-time and accuracy are not very high. The more concerned use requirements are first, a wide coverage area, and positioning can be performed even if it is far away from the base; The posit...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a simple satellite navigation system covering the whole world. To solve this problem, if the existing technology is used to achieve large-scale signal coverage, countless base stations with global coverage need to be established or multiple ground With the support of measuring stations, control stations, and dozens of advanced satellites in orbit, the system is expensive and the construction period is long, which is economically unfeasible.

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