Method for rapid finding of navigational satellite and orbit determination based on ground receiver

A technology for navigation satellites and receivers, applied in the field of satellite communications, can solve problems such as inability to quickly and effectively find and locate satellites, and achieve the effect of narrowing the search range and improving the search accuracy rate.

Active Publication Date: 2018-06-26
SPACE STAR TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing Beidou positioning cannot quickly and effectively find and locate stars in some areas

Method used

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  • Method for rapid finding of navigational satellite and orbit determination based on ground receiver
  • Method for rapid finding of navigational satellite and orbit determination based on ground receiver
  • Method for rapid finding of navigational satellite and orbit determination based on ground receiver

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Embodiment Construction

[0042] Hereinafter, the present invention will be described in detail based on the drawings.

[0043] Such as figure 1 As shown, after power-on, the ground receiver information processing unit first performs interface setting and initialization according to the setting parameters, and performs spiral search according to the prefabricated position area in two ways;

[0044] With the preset position as the center of ±90°, when the search range is divided into odd search areas, the spiral search is performed on the preset position area first, and then the spiral search is performed on different search areas on both sides of the center;

[0045] With the preset position as the center, the search range is ±90° from the center. When the search range is divided into an even number of search areas, the left or right spiral search is performed on the preset position in turn, and the search area on one side (left or right) is searched. After completion, switch to the other side (right ...

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Abstract

The invention relates to a method for rapid finding of a navigational satellite and orbit determination based on a ground receiver. The method includes the steps that a ground receiver first searchesfor and stores all visible satellites; satellite finding is performed by using the latest almanac, a rough estimation of the position and speed of a user and the GPS estimation; during next satellitefinding, the ground receiver determines satellites in the horizon range to perform fast homing; the satellite position of the corresponding epoch is determined; a virtual observed quantity is obtained; data processing is completed, and an optimal estimation of the satellite state is given. According to the method, through the ground receiver as a ground receiving point, satellite signals are received and calibrated by combination with signals issued by the navigational satellite and information stored in the ground receiver, parameter estimation is performed according to a solved phase ambiguity, the carrier phase ambiguity solving success rate is improved, invalid search range and time are effectively reduced, and the rapid satellite finding capability and the navigational satellite orbitdetermination are further improved.

Description

technical field [0001] The invention belongs to the field of satellite communication, and relates to a ground receiver-based method for quickly finding and determining orbits of navigation satellites. Background technique [0002] my country's rail industry started in the 1990s. Various aspects of artificial earth satellite orbit mechanics, including perturbation motion equations and solutions, transformation theory, perturbation force model, post-Newton effect, orbit improvement methods, etc.; deduced many key formulas, combined theory with precise orbit determination software , developed orbit calculation software; navigation satellites determined real-time orbits and clocks. In recent years, more and more research institutions in my country have joined the ranks of Beidou Data Analysis Center. [0003] As of the end of 2012, my country has launched 14 Beidou navigation satellites, including 5 GEO satellites, 5 IGSO satellites, and 4 MEO satellites. The Beidou navigation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/24
CPCG01S19/24
Inventor 胡静关新锋张斯炜栾金金郭文军郭荣刘永刚
Owner SPACE STAR TECH CO LTD
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