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A method and device for realizing positioning by a GNSS receiver

A receiver, carrier phase technology, applied in measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of high economic cost and cumbersome operation process, and achieve the effect of low cost, simple operation and high positioning accuracy

Active Publication Date: 2019-11-26
UNICORE COMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above two methods based on inter-station differences can effectively improve the relative positioning accuracy of GNSS receivers, but both require two (or more than two) GNSS receivers, the operation process is cumbersome and the economic cost is high

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  • A method and device for realizing positioning by a GNSS receiver
  • A method and device for realizing positioning by a GNSS receiver
  • A method and device for realizing positioning by a GNSS receiver

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0036] Some special industry applications do not have very high requirements for absolute positioning accuracy, but they have higher requirements for relative positioning accuracy. Typical application scenarios include agricultural sowing and harvesting, etc. If there are some technologies that can obtain stable With consistent accuracy and relatively low economic cost, this technology will become very valuable.

[0037] The accuracy of carrier phase observations is two orders of magnitude higher than that of pseudorange observations, and can reach millimeter-level measuremen...

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Abstract

The invention discloses a method and device for positioning a GNSS receiver. The method includes calculating the pseudorange single difference between two satellites according to the obtained pseudorange original observation value; calculating the inter-satellite and inter-epoch double-difference observation value according to the obtained carrier phase original observation value of the carrier phase; calculating the doppler single-difference observation value between the two satellites according to the doppler observation value of the GNSS receiver; and estimating the position information of the GNSS receiver according to the pseudorange single difference, the carrier phase original observation value of the carrier phase, and the doppler single-difference observation value obtained through calculation. By means of a single-station positioning, the high positioning precision, simple operation and low cost are achieved being independent from extra satellite orbit, satellite dock error correction or other external data and without the need for extra reference station to provide differential data.

Description

technical field [0001] The present invention relates to but not limited to positioning technology, especially a method and device for GNSS receiver to realize positioning. Background technique [0002] Generally speaking, the position information of a Global Navigation Satellite System (GNSS, Global Navigation Satellite System) receiver can be calculated by using pseudorange observation values ​​of four (or more) satellites and broadcast ephemeris. At the same time, GNSS receivers also provide carrier phase observations with higher accuracy than pseudorange observations. Correct use of carrier phase observations can effectively improve the positioning accuracy of GNSS receivers. [0003] In terms of single station positioning technology, in order to improve the positioning accuracy of GNSS receivers, an intuitive method is to use carrier phase to smooth the pseudorange observations, but the improvement of positioning accuracy is quite limited; another technique using carrier...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/42G01S19/41
CPCG01S19/41G01S19/42
Inventor 陈孔哲刘亮胡刚王献中
Owner UNICORE COMM INC
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