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Satellite synchronization method in UWB positioning process

A positioning process and satellite technology, applied in the directions of synchronization devices, wireless communication, multiplexing communication, etc., can solve the problems of increasing number of satellites, frequent handovers, and poor positioning quality at the junction of cells

Inactive Publication Date: 2019-11-12
杭州微萤科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will lead to frequent handovers, poor positioning quality at cell junctions, and increased number of satellites required.

Method used

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  • Satellite synchronization method in UWB positioning process
  • Satellite synchronization method in UWB positioning process
  • Satellite synchronization method in UWB positioning process

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the present invention;

[0026] refer to Figures 1 to 3 , There are three ways of satellite networking and signal transmission in the same cell. In a cell, suppose there are n timings ( image 3 in m+2figure 1 In , the positioning network contains a main satellite A1, and the rest of the satellites are ordinary satellites. figure 2 In , each satellite has a parent satellite (except the main satellite), and the parent satellite can be the main satellite or an ordinary satelli...

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Abstract

The invention discloses a satellite synchronization method in a UWB positioning process. The method is characterized by comprising the steps: calculating clock drift coefficients of a satellite and amain satellite; calculating an initial time difference between the satellite and the main satellite; calibrating a transmitting timestamp on a main satellite clock domain; the satellite broadcasts information including clock drift coefficients of the satellite and the main satellite, a starting time difference of the satellite and the main satellite, a launching timestamp of the calibration satellite and a neighbor satellite number to all satellites or locally associated satellites; in this way, the satellite synchronization method is a pre-step of a solution for eliminating the problem of frequent switching between cells in UWB positioning, and satellites need to be synchronized firstly no matter whether UWB distributed computing is adopted for positioning or UWB centralized computing isadopted for positioning.

Description

technical field [0001] The invention relates to a UWB positioning technology, in particular to a satellite synchronization method in the UWB positioning process. Background technique [0002] At present, the cell switching of indoor positioning is realized by switching two independent cells, that is, after entering another cell, the original cell will no longer provide services. This will lead to frequent handovers, decreased positioning quality at cell boundaries, and increased number of satellites required. Contents of the invention [0003] The main purpose of the present invention is to provide a satellite synchronization method in the UWB positioning process, which eliminates the boundaries of the cells in a positioning area, and realizes the rapid synchronization of basic information between satellites through simple steps; [0004] In order to achieve the above object, the satellite synchronization method in the UWB positioning process proposed by the present inven...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04J3/06H04B7/185
CPCH04W56/0015H04J3/0661H04J3/0682H04B7/18582
Inventor 楼喜中
Owner 杭州微萤科技有限公司