Ephemeris data processing method and device, equipment and storage medium

A technology of ephemeris data and processing method, applied in the fields of navigation, satellite communication, positioning, and computer, which can solve the problems of poor real-time performance and achieve the effect of enriching ephemeris data

Inactive Publication Date: 2021-06-01
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The satellite position calculated by using the precise ephemeris is more accurate, but the precise ephemeris generally requires post-processing of the satellite tracking station, and the real-time performance is poor

Method used

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  • Ephemeris data processing method and device, equipment and storage medium
  • Ephemeris data processing method and device, equipment and storage medium
  • Ephemeris data processing method and device, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0048]16,257,1,-1,2,34,-64,89,60,30,-11,-22,-108,18,1,-38,-84,11,-73,-121,-83, 62,-44,-11,-76,1,-80,-127,-72,6,-79,-21,83,2,102,-88,83,3,62,-4,-50,23 ,74,-97,-21

[0049] The above example is the message data of a GPS satellite. The first data after comma separation is the satellite number (16), the second data is the type (257, indicating GPS), and the rest of the data are binary byte data output data. The specific meaning can be obtained through further analysis.

example 2

[0051] 18,769,1,1,13,110,65,-14,105,-21,116,-64,47,52,99,40

[0052] The above is the message data of a GLONASS satellite. The first two digits separated by commas are the satellite number (18) and type (769, indicating GLONASS), and the remaining data is the data after binary byte data output. The specific meaning can be obtained through further analysis.

[0053] In an implementation manner, for binary message data, specific format conversion may be performed for different chips and different satellite systems.

[0054] For example, see Figure 2a , in the complete ephemeris of a GPS satellite, the navigation message (Navigation Message) may include multiple frames of data. One frame may include 1500 bits of data, and one frame may be further divided into five sub-frames (Sub-frames), each of which has a length of 300 bits. The subframe may include TLW (Telemetry word, telemetry word), HOW (Hand over word, handover word), data (data), and so on. Wherein, the TLW may incl...

Embodiment approach

[0069] In one embodiment, the method also includes:

[0070] S42. Authenticate the ephemeris data acquisition request;

[0071] S43. In the case of passing the authentication, analyze and judge the validity of the ephemeris data acquisition request;

[0072] S44. When the analysis and legality judgment are successful, search the database for the ephemeris data corresponding to the ephemeris data acquisition request.

[0073] Exemplarily, in S41, after receiving the ephemeris data acquisition request from the target device, the server can use the device information and / or user information carried in the ephemeris data acquisition request to perform authentication to determine the ephemeris data acquisition request. Whether the request is from an authorized device and / or an authorized user. If it is from an authorized device and / or an authorized user, it can be determined that the authentication is passed. If the authentication is passed, the ephemeris data acquisition reques...

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Abstract

The invention provides an ephemeris data processing method and device, equipment and a storage medium, and relates to the fields of satellite communication, positioning, navigation and the like. According to the specific implementation scheme, the ephemeris data processing method comprises the following steps: receiving original ephemeris data from a plurality of pieces of user equipment; and analyzing the original ephemeris data according to the analysis mode of each user equipment and the satellite ephemeris protocol of each galaxy. According to the embodiment of the invention, the ephemeris data of multiple pieces of user equipment can be processed and stored in a centralized manner, and ephemeris data can be stored more completely, so that richer ephemeris data is provided.

Description

technical field [0001] The present disclosure relates to the field of computer technology, in particular to satellite communication, positioning, navigation and other fields. Background technique [0002] Satellite ephemeris data includes radio signals emitted by positioning satellites that describe the orbital information of each satellite. The position of each satellite can be calculated according to the ephemeris data, so as to further apply the positioning algorithm to realize the position calculation. The ephemeris data mainly includes broadcast ephemeris and precise ephemeris. The broadcast ephemeris is generally obtained by the receiver along with the radio signal broadcast by the satellite, and has strong real-time performance. The satellite position calculated using the precise ephemeris is more accurate, but the precise ephemeris generally requires post-processing by the satellite tracking station, and the real-time performance is poor. On the mobile phone, if th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04B7/185
CPCH04L69/22H04B7/18513G01S19/258G01S19/05G01S19/33G01S19/08G01S19/256G01S19/27
Inventor 单广荻贾海禄陈希夏磊
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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