High-precision real-time absolute orbit determination method

A high-precision, orbit determination technology, applied in the field of satellite navigation and positioning, can solve problems such as inability to meet high-precision real-time orbit determination requirements, reduce carrier phase real-time orbit determination reliability, and difficulty in detecting jumps and solving ambiguities. The effect of orbit prediction and extrapolation ability, improving utilization rate and orbit determination accuracy, and orbit determination and velocity measurement accuracy
CN110988941AInactive Publication Date: 2020-04-10BEIJING RES INST OF TELEMETRY +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING RES INST OF TELEMETRY
Publication Date
2020-04-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-precision real-time absolute orbit determination method. Under the application background of high-precision real-time orbit determination of a satellite-borne receiver,with a pseudo-range and a carrier phase are used as the observed quantity of a filtering equation, state parameters such as satellite operation positions and speeds are stably output with high precision by using extended Kalman filtering and combining a highly nonlinear kinetic model. While the high-precision carrier phase observed quantity is fully utilized, various ways are adopted to improve the operation efficiency, the requirements of high-precision real-time orbit determination of medium and low orbits are met, the orbit determination and speed measurement precision is greatly improved.In addition, the method also has orbit prediction and extrapolation capabilities, so that the reliability of on-orbit output of the navigation equipment is improved to a great extent. The low-orbit satellite scene simulation real-time orbit determination test is carried out on the receiver platform, the technical indexes that the real-time absolute orbit determination position precision is superior to 0.5 m and the speed measurement precision is superior to 0.5 mm / s can be realized; and compared with a conventional pseudo-range real-time single-point positioning method, the provided method enables the orbit determination speed measurement precision to be greatly improved.
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Description

technical field

[0001] The invention relates to a high-precision real-time absolute orbit determination method, in particular to a high-precision real-time absolute orbit determination method based on pseudorange and carrier phase observations, which belongs to the technical field of satellite navigation and positioning and can be applied to various types of low-orbit satellites and payloads of manned spacecraft. Background technique

[0002] With the continuous improvement of satellite independent and precise orbit determination requirements and the improvement of the performance of on-board processors, the application of GNSS in on-board orbit determination has developed extremely rapidly. On-board GNSS real-time orbit determination can provide real-time orbit data for the payloads of various medium and low orbit satellites and manned spacecraft, especially large-scale earth observation payloads. burden. Therefore, carrying out research on high-precision orbit determinat...

Claims

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