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iGMAS multi-analysis center and multi-satellite system precision orbit product integration method

An analysis center, precision orbit technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc. Consistency etc.

Active Publication Date: 2018-08-17
NO 63921 UNIT OF PLA +1
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Problems solved by technology

[0008] The above three technical difficulties directly affect the accuracy, stability and consistency of multi-satellite system orbit integration products, and further affect the user experience of the integration products, which must be solved in the iGMAS high-precision product service

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  • iGMAS multi-analysis center and multi-satellite system precision orbit product integration method

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Embodiment Construction

[0050] In order to explain the present invention and / or the technical solutions in the prior art more clearly, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings and obtained Other embodiments.

[0051] The idea of ​​the method of the present invention is: for the satellite orbit products of the same type of observation accuracy, multiple analysis centers provide the orbit data of each satellite in the observation data of this type, preprocess the precision orbit products according to the orbit data, and count the orbit data of each analysis center Interval and time system identification, etc., select the median orbit value of different analysis centers of the same satellite as the initial inte...

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Abstract

The invention discloses an iGMAS multi-analysis center and multi-satellite system precision orbit product integration method. For a same satellite system, a plurality of analysis centers provide the orbit data of each satellite in the satellite system, according to the orbit data, the preprocessing of a precision orbit product is performed, and an orbit value median of the same satellite in different analysis centers is selected as the initial integration orbit of the satellite. A similarity transformation equation is established between an analysis center orbit and an integration orbit. According to a least square principle, adjustment is performed, similar transformation parameters and a residual error are resolved, a weight function and variance component estimation method is used to estimate the weights of different types of satellites in each analysis center, and according to the weights, the integration orbit is calculated. An observation equation is re-established so as to resolve until convergence. In the invention, a system deviation among the orbit products of the different analysis centers of multiple satellite systems can be corrected so that the acquired integration orbit product can be ensured to possess high reliability, high robustness and high precision.

Description

Technical field [0001] The invention belongs to the technical field of global satellite navigation system (GNSS) high-precision positioning, and relates to an iGMAS (Global Continuous Monitoring and Evaluation System) multi-analysis center multi-satellite system precision orbit product integrated method. Background technique [0002] Compared with the orbit products of a single analysis center and single satellite system, whether in terms of satellite selectivity, positioning convergence speed, or positioning accuracy and reliability, multiple analysis centers and multiple GNSS orbit products can greatly improve the user's product use Experience. Since its establishment, the International GNSS Service Organization (IGS) has successively carried out the reprocessing of products such as GPS orbital clock offsets in multiple analysis centers. The Global Continuous Monitoring and Evaluation System (iGMAS) under construction and development in China consists of 30 tracking stations, 3...

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Application Information

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IPC IPC(8): G01S19/20
CPCG01S19/20
Inventor 蔡洪亮赵齐乐陈国焦文海
Owner NO 63921 UNIT OF PLA
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