Non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance

Abstract

According to the non-navigation GEO satellite forwarding type orbit determination method based on low orbit satellite assistance provided by the invention, the time delay of a downlink signal forwarded by a GEO satellite to a ground station and the low orbit satellite is measured by carrying a forwarding type receiver on the low orbit satellite, a ground forwarding type orbit determination network is assisted to carry out precise orbit determination on the GEO satellite, and the orbit determination precision is improved. Compared with the prior art, an uplink signal of the ground station is forwarded by the repeater carried by the GEO satellite, one path is received by the ground station, the other path is received by the low-orbit satellite serving as the motion observation station, and the GEO satellite does not need to carry an atomic clock; according to the method, the relative motion of the GEO satellite and the motion observation station can be artificially created, the orbit measurement geometric factors of the GEO are improved, the motion observation station assists the ground forwarding type orbit measurement network to carry out combined orbit determination, and the orbit determination precision is improved.

Description

technical field [0001] The invention belongs to the technical field of satellite orbit determination, in particular to a non-navigation GEO satellite transponder orbit determination method based on low-orbit satellite assistance. Background technique [0002] The high-orbit and static-earth characteristics of GEO satellites have two sides. The advantage is that they have a wide ground coverage, so they are widely used in communications, meteorology, navigation and positioning, and data relay. Fixed, and when the distribution of observation stations is limited by geographical conditions, the orbit determination accuracy of GEO satellites is not ideal. [0003] The existing technology uses high-precision repeater GEO satellite orbit determination technology to achieve satellite orbit determination. However, in this technology, the distribution of repeater ground stations is limited, and the geometrical changes between ground stations and GEO satellites are small. This static p...

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Problems solved by technology

[0002] The high-orbit and geostationary characteristics of GEO satellites have two sides. The advantage is that the ground covers a wide range, so it is widely used in communication, meteorology, navigation and positioning, and data relay. The defect is the geometric configuration of the satellite and the ground station Fixed, and when the distribution of observation stations is limited by geographical conditions, the orbit determination accuracy of GEO satellites is not ideal

[0003] The existing technology uses high-precision repeating GEO satellite orbit determination technology to realize satellite orbit determination, but the distribution of repeating ground stations in this technology is limited, and the geometric configuration between the ground station and the GEO satellite has little change. This static pseudo-range observation method The dynamic constraints on GEO satellites are weak, so it has a great impact on the orbit determination accuracy of GEO satellites

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