Storage and retrieval method for GPS satellite broadcast ephemeris data

A technology of ephemeris data and satellite broadcasting, applied in the field of satellite application research, can solve the problems of weak matching target and low calculation efficiency, and achieve the effect of improving calculation efficiency, high retrieval efficiency and strong target.
CN104035976AActive Publication Date: 2014-09-10NANJING UNIV OF INFORMATION SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF INFORMATION SCI & TECH
Publication Date
2014-09-10

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Abstract

The invention discloses a storage and retrieval method for GPS satellite broadcast ephemeris data. The method comprises the steps that a data storage area is divided into an ephemeris data part and an indexing data part, and the GPS satellite broadcast ephemeris data are stored according to satellite serial numbers, wherein the indexing data part comprises the total number of epoches, the number of CPS and ephemeris position information, and the ephemeris position information comprises cycles per second of a GPS and the stored position of the ephemeris data. According to the storage and retrieval method for the GPS satellite broadcast ephemeris data, when observation station observation data and the satellite ephemeris data are utilized for calculating the coordinates of a satellite, the target performance is high, retrieval efficiency is high, and calculating efficiency can be greatly improved.
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Description

technical field

[0001] The invention relates to a method for storing and retrieving GPS satellite broadcast ephemeris data, which belongs to the field of satellite application research. Background technique

[0002] GPS is the abbreviation of Global Positioning System (Global Positioning System) in English. It is a system that uses GPS satellites to perform real-time positioning and navigation around the world. The principle of GPS positioning and navigation is to use the coordinates of GPS satellites in space as known values. Users use the receiver to measure the distance from a certain point to the satellite. The coordinates are calculated using the resection algorithm to calculate the position of the receiver. Therefore, knowing the satellite orbit coordinates is a prerequisite for GPS positioning.

[0003] GPS broadcast ephemeris is a navigation message containing orbital information transmitted by satellites. After receiving these signals, users can obtain the require...

Claims

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