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Multi-base station ephemeris merging method

A technology of ephemeris and base stations, applied in the field of satellite positioning, can solve the problems of few satellite systems and the inability of the system to provide services, and achieve the effect of improving data accuracy and fault tolerance

Active Publication Date: 2022-06-03
北京北斗华大科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case of a single base station, there are fewer satellite systems. At the same time, once a problem occurs in the base station, the system will not be able to provide services. In the case of multiple base stations, there are more ephemeris in multiple base stations. How to filter the ephemeris and get the most Excellent ephemeris is a technical problem that needs to be solved

Method used

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Embodiment Construction

[0010] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other without conflict, and the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0011] The multi-base station ephemeris merging method according to the embodiment of the present invention operates on the data merging server, and selects the optimal ephemeris data through various strategies. The multi-base station scenario diagram of the present invention is as follows: figure 1 shown. Please refer to figure 2 , the multi-base station ephemeris combining method includes steps 1-4.

[0012] Step 1: Define a data structure in advance, denoted as MergeItem, which is used to store the data in the ephemeris merging process. The data structure includes: time date [maximum satellite number], ephemeris data two-dimensional data data [maximum satellite number] [Epheme...

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Abstract

The embodiment of the invention discloses a multi-base-station ephemeris merging method, which comprises the following steps of: 1, defining a data structure in advance; 2, collecting ephemeris data uploaded by each satellite base station, and classifying and storing the data according to an ephemeris system and a base station location; 3, checking the data according to the time, the health state and the data value range, and ensuring the data to be timely and accurate through the comparison and checking of the data combined for two times; and 4, all data files are processed in sequence. According to the method, the data is checked through the time, the health state and the data value range, and meanwhile, the data accuracy and the error-tolerant rate are improved through previous and later comparison and mutual backup supplementation.

Description

technical field [0001] The invention relates to the technical field of satellite positioning, in particular to a method for combining ephemeris of multiple base stations. Background technique [0002] A-GNSS (Assisted-GNSS), network-enhanced satellite positioning system, is to use ordinary mobile communication network to transmit enhanced correction data to shorten the first positioning time of the receiver. At the same time, satellite navigation can also be realized under certain harsh conditions. position. The auxiliary information provided includes the almanac, ephemeris, frequency range, standard time and approximate position of the navigation satellite. [0003] Among them, the ephemeris data of satellites needs to be acquired by building a base station on the ground. A single base station is not enough to cover all satellite systems in the world, and it is also not conducive to the stable operation of the system. Therefore, multiple base stations should be established...

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Application Information

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IPC IPC(8): G01S19/37G01S19/12
CPCG01S19/37G01S19/12Y02D30/70
Inventor 安士军孙中亮
Owner 北京北斗华大科技有限公司