Navigation satellite low-orbit monitoring constellation optimization design method

Abstract

The invention provides a navigation satellite low-orbit monitoring constellation optimization design method. An existing technology foundation and a future technology development trend are fully considered, navigation satellite low-orbit monitoring constellation design requirements and constraint conditions are analyzed, a Walker-[delta] constellation and a sun synchronous regression orbit are selected, and an elevation criterion containing a monitoring station cover factor, a performance factor and a constellation orbit parameter is built at the same time, so a navigation satellite low-orbit monitoring constellation going through the optimization design has good monitoring performance. The optimization design of the navigation satellite low-orbit monitoring constellation can be effectively achieved according to the navigation satellite low-orbit monitoring constellation optimization design method brought forward in the invention, the technical scheme is scientific and optimal, and the navigation satellite low-orbit monitoring constellation optimization design method has high implementability; and the designed constellation can use the less total number of satellites to achieve a large monitoring station cover factor and a large performance factor.

Description

technical field [0001] The invention belongs to the technical field of low-orbit monitoring constellation design for navigation satellites, and in particular relates to an optimal design method for low-orbit monitoring constellations for navigation satellites. Background technique [0002] Traditional satellite orbit determination is completed by ground-based monitoring stations. Ground-based orbit determination methods are restricted by geographical and political factors. In the case of limited deployment of regional stations, monitoring stations can only track and observe navigation satellites in limited arcs, and the accuracy of orbit determination is limited. It is difficult to meet the increasing demand for orbital accuracy. With the maturity of orbit determination technology of data-borne low-orbit satellites, the inter-satellite measurement of high and low satellites provides a new way of orbit determination for navigation satellites. [0003] At present, my country'...

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Problems solved by technology

[0004] As a space-based monitoring station, low-orbit satellites have optimization problems. One is the rational use of existing low-orbit satellites, and there is a problem with the selection of existing satellites; the other is the construction of small satellite monitoring constellations for navigation satellite monitoring. The constellation configuration Requires optimized design to achieve optimal monitoring capability

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