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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.

Active Publication Date: 2014-09-10
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a storage and retrieval method for GPS satellite broadcast ephemeris data, to solve the problem of using station observation data and satellite ephemeris data to match and calculate satellite coordinates, the matching target is not strong, and the calculation efficiency is low question

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  • Storage and retrieval method for GPS satellite broadcast ephemeris data
  • Storage and retrieval method for GPS satellite broadcast ephemeris data

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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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.

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...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/22
Inventor 王新志岳东杰柯福阳贾军辉
Owner NANJING UNIV OF INFORMATION SCI & TECH
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