Navigation satellite multi-satellite orbit determination system and method based on satellite-ground bidirectional clock difference constraint

A technology for navigation satellites and satellite clock errors, applied in the field of navigation satellites, can solve problems such as the limitations of precise orbit determination of navigation satellites, and achieve the effects of reducing correlation, improving orbit determination accuracy, and improving availability.

Pending Publication Date: 2022-01-04
SHANGHAI ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI +2
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Problems solved by technology

[0004] The object of the present invention is to provide a navigation satellite multi-satellite orbit determination system and method constrained by satellite-ground two-way clock difference

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  • Navigation satellite multi-satellite orbit determination system and method based on satellite-ground bidirectional clock difference constraint
  • Navigation satellite multi-satellite orbit determination system and method based on satellite-ground bidirectional clock difference constraint
  • Navigation satellite multi-satellite orbit determination system and method based on satellite-ground bidirectional clock difference constraint

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[0051] The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

[0052] It should be noted that components in the various figures may be shown exaggerated for the purpose of illustration and are not necessarily true to scale. In the various figures, identical or functionally identical components are assigned the same reference symbols.

[0053] In the present invention, unless otherwise specified, "arranged on", "arranged on" and "arranged on" do not exclude the presence of intermediates between the two. In addition, "arranged on or above" only means the relative positional relationship between two parts, and under certain circumstances, such as after the product direction is reversed, it can also be converted to "arranged under or below", and vice versa Of course.

[0054] In the present invention, each embodiment is only intended to illustrate the solutions of the present invention, and sho...

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Abstract

The invention provides a navigation satellite multi-satellite orbit determination system and method based on satellite-ground bidirectional clock difference constraint, and the system comprises an error correction unit which is configured to carry out the error correction of the orbit determination pseudo-range observed quantity of different ground monitoring station receivers of a Beidou system according to the satellite clock difference, wherein the satellite clock difference comes from satellite-ground time synchronization based on a radio bidirectional method; and the system further comprises a multi-satellite orbit determination unit which is configured to perform multi-satellite precise orbit determination by using the orbit determination pseudo-range observed quantity corrected by the error correction unit.

Description

technical field [0001] The present invention generally relates to the technical field of navigation satellites, and more specifically relates to a multi-satellite orbit determination system and method for navigation satellites constrained by satellite-ground two-way clock differences. Background technique [0002] my country's regional satellite navigation system uses a mixed constellation composed of GEO / IGSO / MEO satellites, relying on regional monitoring stations within the territory to monitor the satellites. Compared with GPS and Galileo navigation systems, the particularity of this hybrid constellation is that the current orbit determination technology used by navigation satellites is the pseudo-range orbit determination method under the condition of multi-satellite and multi-station support. [0003] In the pseudo-range orbit determination method, my country's regional satellite navigation system mainly adopts the L-band pseudo-range navigation system. The navigation ...

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Application Information

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IPC IPC(8): G01S19/27G01S19/20G04R20/02
CPCG01S19/27G01S19/20G04R20/02
Inventor 刘利唐成盼刘金获胡小工郭睿周善石李晓杰曹月玲刘帅杨宇飞郭靖蕾蒲俊宇
Owner SHANGHAI ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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