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A Fast Initial Convergence Method for Dynamic Precise Point Positioning

A precise single-point positioning and fast technology, applied in the field of satellite precise navigation and positioning, can solve problems such as long-term convergence and high-precision positioning, and achieve the effect of accelerating rapid convergence

Active Publication Date: 2022-02-01
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above problems, the present invention provides a fast initial convergence method for dynamic precision single point positioning, which can solve the problem that it takes a long time to converge in PPP independent working mode to achieve high-precision positioning

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  • A Fast Initial Convergence Method for Dynamic Precise Point Positioning
  • A Fast Initial Convergence Method for Dynamic Precise Point Positioning
  • A Fast Initial Convergence Method for Dynamic Precise Point Positioning

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Embodiment Construction

[0058] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0059] The dynamic precise point positioning fast initial convergence method provided by the embodiment of the present invention is based on the assistance of reference station observation information; the implementation of the method is based on the dynamic precise point positioning fast initial convergence system, refer to figure 1 As shown, the system consists of a GNSS receiver 1 at the user end, a GNSS receiver 2 at the referen...

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Abstract

The invention discloses a fast initial convergence method for dynamic precision single point positioning, the method comprises: the receiver at the user terminal receives the original observation information sent by the receiver of the reference station through the wireless communication network, and receives the precise ephemeris and the precise ephemeris provided by the IGS data analysis center. Clock difference products; the client receiver performs RTK / PPP fusion calculation, and uses the original observation information to assist in accelerating the initial convergence of PPP; judges whether PPP has completed convergence, and switches to PPP independent working mode if convergence is completed. This method utilizes the observation information of the reference station and realizes the acceleration of the initial convergence of PPP through RTK / PPP fusion calculation. Integrating the respective technical advantages of RTK and PPP, and without the need to build a large number of reference stations, it can provide an effective solution for PPP rapid convergence in some special application scenarios such as stations, docks and airports.

Description

technical field [0001] The invention relates to the field of satellite precise navigation and positioning, in particular to a fast initial convergence method for dynamic precise single point positioning. Background technique [0002] The rapid initial convergence problem is an important factor restricting the popularization and application of Precise Point Positioning (PPP) technology. In order to improve the convergence time of PPP and improve its real-time performance, many scholars have studied the factors that may affect the convergence performance, and proposed a series of methods to accelerate the convergence of PPP. For example, a higher-precision positioning function model is used, and the quality control of the observation data is carried out at the same time, and observation data containing gross errors are eliminated; multi-system fusion is used to improve the spatial geometry of the satellite; when the Kalman filter is used for parameter calculation, the setting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 赵龙张且且周建华
Owner BEIHANG UNIV
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