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Precision positioning method and device based on BDS/GNSS multi-mode chip

A precision positioning and chip technology, applied in the field of satellite positioning, can solve problems such as insufficient precision

Pending Publication Date: 2019-12-13
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a precise positioning and device based on BDS / GNSS multi-mode chip to overcome the current problem of insufficient precision when using carrier phase measurement for satellite positioning

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  • Precision positioning method and device based on BDS/GNSS multi-mode chip

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Embodiment Construction

[0029] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0030] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides a precision positioning method and device based on a BDS / GNSS multi-mode chip. The method comprises the steps of: calculating a real-time double-difference correction number delta inverted delta Ru of an observation station according to obtained approximate coordinates of the observation station; determining a double-difference observation value of the observation station, wherein the double-difference observation value is related to instantaneous position coordinates of the observation station; correcting the double-difference observation value by using the double-difference correction number of the observation station to obtain a corrected double-difference observation value; and determining the instantaneous position coordinates of the observation station according to the corrected double-difference observation value, and using the instantaneous position coordinates as a positioning result of the observation station. By adopting the method, three-dimensional coordinates of the observation station can be provided in real time according to an obtained carrier phase difference, and centimeter-level precision is achieved.

Description

technical field [0001] The present invention relates to the technical field of satellite positioning, and more specifically, to a precise positioning method and device based on a BDS / GNSS multi-mode chip. Background technique [0002] Carrier phase measurement technology is one of the main methods of high-precision positioning at present. Centimeter-level positioning using carrier phase measurements is now widely used in surveying, geodesy, geophysics and many industrial applications. [0003] At present, the use of carrier phase measurement to achieve centimeter-level positioning has disadvantages such as cumbersome calculations and low accuracy. Contents of the invention [0004] The invention provides a precise positioning and device based on BDS / GNSS multi-mode chip, so as to overcome the problem of insufficient accuracy in satellite positioning by carrier phase measurement at present. [0005] In a first aspect, the present invention provides a method for precise po...

Claims

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Application Information

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IPC IPC(8): G01S19/33G01S19/41G01S19/44G01S19/42G01S19/22G01S19/07G01S19/08G01S19/04
CPCG01S19/33G01S19/41G01S19/44G01S19/425G01S19/22G01S19/07G01S19/08G01S19/04Y02D30/70
Inventor 刘丹夏玉华郭培莹关大英李素莹
Owner AEROSPACE INFORMATION