Dynamic calibration system and method for time delay of satellite-ground two-way time synchronization equipment
A technology of two-way time and synchronizing equipment, applied in the field of satellite navigation to achieve the effect of improving self-consistency
Pending Publication Date: 2022-01-04
SHANGHAI ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI +2
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[0006] The purpose of the present invention is to provide a dynamic calibration system and method for the time delay of satellite-ground two-way time synchronization equipment, so as to solve the limitations of the existing multi-satellite orbit determination when it is applied to the precise orbit determination of navigation satellites in the regional navigation system sexual problems
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[0070] The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.
[0071] 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.
[0072] 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.
[0073] In the present invention, each embodiment is only intended to illustrate the solutions of the present invention, and sho...
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The invention provides a dynamic calibration system and method for time delay of satellite-ground two-way time synchronization equipment. The system comprises a satellite clock correction unit which is configured to obtain satellite clock correction through satellite-ground two-way time synchronization data, an observed quantity correction unit which is configured to perform error correction on orbit determination pseudo-range observed quantities of different observation station receivers, and a dynamic orbit determination unit which is configured to perform dynamic orbit determination by using the satellite clock correction obtained by the satellite clock correction unit and the orbit determination pseudo-range observed quantities corrected by the observed quantity correction unit, and estimate the time delay of the satellite-ground two-way time synchronization equipment at the same time.
Description
technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a dynamic calibration system and method for time delay of satellite-ground two-way time synchronization equipment. Background technique [0002] Our country's regional satellite navigation system adopts an independent time synchronization system, which relies on the satellite-ground two-way time synchronization equipment of the regional monitoring station in the territory to monitor the satellite clock difference. Compared with GPS and Galileo navigation systems, its particularity lies in 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] my country's regional satellite navigation system mainly adopts the L-band pseudo-range navigation system. This system first needs to deduct the influence of satellite clock error and ...
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Login to View More IPC IPC(8): G01S19/27G01S19/20G04R20/02
CPCG01S19/27G01S19/20G04R20/02
Inventor 陈金平潘军洋杨建华胡小工周善石郭睿唐成盼曹月玲李晓杰刘帅辛杰杨宇飞田翌君
Owner SHANGHAI ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI