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Pseudo-range differential method with time maintaining characteristic

A pseudo-range difference and time technology, applied in the field of satellite positioning, can solve the problem that it is difficult to ensure the continuity of user positioning

Active Publication Date: 2017-05-31
山东天星北斗信息科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the data delay of wireless transmission, there is a certain data delay when the rover user receives the pseudo-range observation value of the reference station, usually between 1 and 3 seconds, so it is difficult for real-time dynamic users to ensure the continuity of user positioning sex

Method used

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  • Pseudo-range differential method with time maintaining characteristic
  • Pseudo-range differential method with time maintaining characteristic
  • Pseudo-range differential method with time maintaining characteristic

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Embodiment Construction

[0053] The present invention will be further explained below in conjunction with the accompanying drawings.

[0054] A pseudo-range difference method with time-maintaining characteristics. The user of the rover receives the data of the reference station once, and the user of the rover can realize continuous positioning for about 1 minute, which ensures the continuity of the positioning of the user terminal and reduces the data received by the user of the reference station at the same time. Traffic, reducing the cost of user positioning. Including the following steps:

[0055] Step 1), the reference station will t 1 The original observation value at time is encoded and sent to the mobile station user through the wireless network, and the t 2 time rover user observations and t 1 Data preprocessing is performed on the reference station observations at time, and the data of the common satellite is selected from the two groups of observations; where, t 2 time later than t 1 Th...

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Abstract

The invention discloses a pseudo-range differential method with a time maintaining characteristic. A pseudo-range differential strategy with the time maintaining characteristic is utilized. According to the method, a mobile station user receives reference station data; and the mobile station user can realize continuous positioning for about one minute, thereby ensuring positioning continuity of a user terminal, reducing data traffic of the mobile station user from a reference station, and reducing positioning cost of the user.

Description

technical field [0001] The invention relates to the field of satellite positioning, in particular to the application of satellite positioning in submeter-level dynamic positioning. Background technique [0002] In sub-meter level positioning, the pseudo-range differential positioning model is usually used, which is a strict differential positioning model. The existing pseudo-range differential positioning model requires the reference station and the rover user to perform synchronous observations, which requires the reference station to be real-time The observation data is sent to the mobile station user in time. For the real-time dynamic positioning user, it is necessary to receive the observation data of the reference station in real time and perform synchronous processing to realize the difference and difference to calculate the user position. However, due to the data delay of wireless transmission, there is a certain data delay when the rover user receives the pseudo-rang...

Claims

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Application Information

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IPC IPC(8): G01S19/42
CPCG01S19/42
Inventor 杨涛邢建平王胜利叶平
Owner 山东天星北斗信息科技有限公司
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