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GNSS global high-precision enhanced positioning method based on cloud positioning

An enhanced positioning and high-precision technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc.

Active Publication Date: 2019-01-29
武汉羲和科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the RTK method, the PPP method does not depend on the tracking station distance, but requires tens of minutes of convergence time

Method used

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  • GNSS global high-precision enhanced positioning method based on cloud positioning
  • GNSS global high-precision enhanced positioning method based on cloud positioning
  • GNSS global high-precision enhanced positioning method based on cloud positioning

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] 1. The global high-precision cloud positioning service system that integrates and enhances the region, see figure 1 .

[0040] Select a uniformly distributed tracking station network from the massive reference station resources of the cloud positioning platform, and generate global differential precision information products according to the differential information of the tracking station network. The global differential precision information products include orbit, clock error, pseudorange deviation and phase deviation.

[0041]Based on global differential precision information products, combined with cloud positioning platform reference stations and server resources, each reference station adopts PPP mode to generate single-station precision information products. The single-station precision information products include ionosphere and pre-test residuals (OMC) . Compared with the traditional double-difference large network calculation mode, the PPP mode can reduce t...

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Abstract

The invention discloses a cloud positioning based GNSS global highly precise and enhanced positioning method, which is designed to achieve enhanced positioning both online and offline. With the rapid development of reference station positioning resources, the uneven distribution of reference station resources and the dependence of the RTK service performance on the density of reference station resources, the simple RTK service on a cloud positioning service platform is difficult to meet the requirements of users for high precision in a wider area. In light of this, based on the abundant reference station resources of the could positioning platform and in combination of PPP and RTK, an effective and flexible GNSS enhanced method is provided, which is especially suitable to achieve enhanced positioning of a cloud positioning platform area.

Description

technical field [0001] The invention relates to the field of high-precision satellite navigation and positioning, in particular to a GNSS global high-precision enhanced positioning method based on cloud positioning. Background technique [0002] With the rapid development of satellite navigation and positioning technology, people put forward higher and higher requirements for the accuracy of navigation and positioning. The positioning accuracy of the satellite navigation system itself is 4 to 20 meters, which cannot meet the needs of high-precision users. Global differential precise positioning currently mainly adopts the wide-area real-time precise positioning mode based on satellite-based enhancement, which can greatly improve the accuracy, availability, continuity and integrity of the navigation service of the satellite navigation system in the enhanced signal coverage area. The realization of the current augmentation system largely depends on the ground reference statio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/42G01S19/07
CPCG01S19/07G01S19/42
Inventor 辜声峰施闯楼益栋唐卫明章红平
Owner 武汉羲和科技有限公司