GNSS receiver and method for operating multiple base stations at the same frequency

A receiver and reference station technology, applied in the field of global satellite navigation surveying and mapping, can solve the problems of small number of transmission channels, limited, unable to carry out normal measurement, etc., to achieve the effect of avoiding mutual interference

Inactive Publication Date: 2018-12-25
GUANGZHOU SOUTH SATELLITE NAVIGATION INSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the relatively limited radio frequency bands currently open for the surveying and mapping industry, the number of transmission channels is relatively small, so when multiple base stations need to be set up in an area to work, the same radio frequency will interfere with each other, resulting in the failure of normal measurement Case

Method used

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  • GNSS receiver and method for operating multiple base stations at the same frequency

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Embodiment 1

[0026] This embodiment discloses a GNSS receiver, including a wireless communication module and a central processing unit, the central processing unit is used to receive and send differential correction data through the wireless communication module, and the central processing unit divides the same period into different times interval, and the time interval corresponds to the index number in the differential correction data one by one, and the GNSS receiver transmits the differential correction data or receives the differential correction data within the corresponding time interval. The wireless communication module includes the network module and the radio module. There are two ways for the user to choose. When using the GNSS receiver, the user can set the base station and the mobile station according to their own needs, and set it as the base station. It is mainly used for long-term continuous observation of satellite navigation signals, and the observation data is transmitte...

Embodiment 2

[0029] At present, in the field of surveying and mapping, the main technical means of transmitting differential correction data through radio stations is that only one base station is allowed to broadcast differential data in the same frequency band and cycle. Under normal circumstances, there will be no conflicts. Because the distance of the base station to transmit data is also limited, so When different construction teams need to measure, in most cases they will be outside the transmission distance. Generally, it is rare to set up two or more base stations. Even if they do, most of them are the construction party themselves To negotiate the use period, so as to complete the measurement of instrument data. In the case of long-term observation and in-depth customer demand, the applicant has learned that there may be such problems. In order to improve efficiency, the applicant thinks and develops the following methods to carry out multiple operations at the same frequency. bas...

Embodiment 3

[0039] Embodiment 3 discloses a readable computer storage medium, which is used to store a program, and when the program is executed by a processor, the method for operating multiple reference stations at the same frequency in Embodiment 2 is realized.

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Abstract

The invention discloses a method for operating a plurality of reference stations at the same frequency, comprising the steps of: receiving step: receiving all differential correction data from a basestation through the wireless communication module, wherein differential correction data comprises an index number; judgment step: determining whether the index number of the received base station is consistent with the index number of the current mobile station, if yes, the differential correction data corresponding to the base station is retained, if not, the differential correction data of the corresponding base station is filtered. The invention also discloses a GNSS receiver and a computer readable storage medium. The method for operating multiple base stations at the same frequency of thepresent invention sets different broadcast delays at different base stations. Therefore, the mobile station can only receive the differential correction data broadcast at a certain base station and time, thereby it is possible to avoid mutual interference caused by arranging multiple base stations at the same frequency.

Description

technical field [0001] The invention relates to the technical field of global satellite navigation surveying and mapping, in particular to a GNSS receiver and a method for operating multiple reference stations at the same frequency. Background technique [0002] At present, RTK is a commonly used GNSS measurement method. RTK technology is a real-time dynamic positioning technology for carrier phase observation. In the field of RTK measurement, it is necessary to use wireless data transmission stations to transmit real-time differential correction data between the reference station and the mobile station. Effects of real-time corrections. However, due to the relatively limited radio frequency bands currently open for the surveying and mapping industry, the number of transmission channels is relatively small, so when multiple base stations need to be set up in an area to work, the same radio frequency will interfere with each other, resulting in the failure of normal measureme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/14G01S19/21
CPCG01S19/14G01S19/21
Inventor 文述生李宁王江林闫少霞周光海肖浩威庄所增潘伟峰陶超韦锦超
Owner GUANGZHOU SOUTH SATELLITE NAVIGATION INSTR
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