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Spatial geographic range coding method and GNSS differential enhanced positioning method in global range

A technology of geographic scope and coding method, applied in the field of GNSS differential enhanced positioning, which can solve the problems that cannot be used, shared and served on a global scale, and that GNSS differential enhanced service models and systems cannot be shared and reused. Privacy, the effect of enhancing transmission efficiency

Active Publication Date: 2022-03-25
国汽大有时空科技(安庆)有限公司
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Problems solved by technology

[0004] Purpose of the invention: In order to solve the problem that different GNSS differential enhanced service models and systems cannot be shared and reused, let alone be used, shared and served on a global scale, the present invention proposes a global GNSS differential enhanced positioning method , by adopting multi-scale step-by-step spatial range division and unified coding on a global scale, it can be applied to the spatial range division, definition and coding of different GNSS satellite systems and different differential augmentation services

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  • Spatial geographic range coding method and GNSS differential enhanced positioning method in global range
  • Spatial geographic range coding method and GNSS differential enhanced positioning method in global range
  • Spatial geographic range coding method and GNSS differential enhanced positioning method in global range

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[0031] The technical scheme of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0032] With the increasing demand for GNSS high-precision positioning, especially the rapid development of unmanned delivery, autonomous driving and driverless cars, as well as the requirements for functional safety and personal privacy, GNSS differential enhancement services are gradually shifting from PPP, N-RTK to PPP- With the development of RTK, the scope of differential enhancement services is gradually developing from a local or regional scope to a global one. Based on this development trend, the space range (or grid) of the differential augmentation service system of the Global Navigation Satellite System (Global Navigation Satellite System, referred to as GNSS) in the satellite-based augmentation and land-based augmentation systems that the present invention relates to The positioning method of the present invention, the posit...

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Abstract

The invention discloses a spatial geographical range coding method and a GNSS differential enhancement positioning method in a global range, and the method comprises the following steps: coding a spatial geographical range in which a current GNSS differential enhancement service is effective based on the spatial geographical range coding method, and obtaining a grid code in a character string form; and analyzing a grid code from the received differential enhancement service, and calculating an effective spatial geographic range of the current GNSS differential enhancement service according to a spatial geographic range coding method.

Description

technical field [0001] The invention belongs to the technical field of global satellite navigation and positioning, and in particular relates to a spatial geographic range encoding method and a global GNSS differential enhanced positioning method. Background technique [0002] In view of the fact that the global satellite navigation and positioning system is affected by relativistic effects, clock errors, satellite ephemeris errors, ionospheric delays, tropospheric delays, multipath errors, and other errors such as earth rotation, antenna phase winding, and antenna phase center errors, etc. Therefore, in the actual GNSS high-precision positioning application, the above-mentioned influencing factors need to be eliminated or corrected. Different GNSS differential augmentation service models and systems have been born in different periods. At present, the widely used GNSS differential augmentation service models and systems mainly include PPP (Precise Point Positioning, PPP for...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/41G01S19/42G01S19/07
CPCG01S19/41G01S19/42G01S19/07G01S19/071
Inventor 李慧恩李庆建
Owner 国汽大有时空科技(安庆)有限公司
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