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Satellite positioning method and device and computer readable storage medium

A satellite positioning device and satellite positioning technology, applied in the field of satellite positioning, can solve the problems of high cost of GNSS receivers, inability to connect GNSS receivers, and inability to reduce cold start time, etc., to achieve the effect of reducing cold start time

Inactive Publication Date: 2019-07-09
SHANGHAI FUKONG HUALONG MICROSYST TECH
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, in some remote areas, such as the sea or mountains, the GNSS receiver cannot connect to the mobile network, so that it cannot obtain the assisted positioning data provided by the server, so the cold start time cannot be reduced
In addition, in order to support wireless communication technology, GNSS receivers are also equipped with corresponding hardware devices, resulting in high cost of GNSS receivers

Method used

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  • Satellite positioning method and device and computer readable storage medium
  • Satellite positioning method and device and computer readable storage medium
  • Satellite positioning method and device and computer readable storage medium

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Embodiment Construction

[0026] It can be seen in practical applications that, for different application scenarios, the time to first location may include a hot start time, a warm start time, and a cold start time.

[0027] For hot start, that is, when the GNSS receiver is restarted in a short period of time, the ephemeris, almanac, precise time, and receiver position obtained by the GNSS receiver analysis are all valid, so that the carrier Doppler frequency shift and PN can be calculated Code phase to realize fast recapture and tracking of satellites. At the same time, fast positioning can be realized by calculating the satellite position according to the analyzed ephemeris parameters. Typically, the warm start time for a GNSS receiver is a few seconds.

[0028] For warm start, the ephemeris parameters received by the GNSS receiver have been invalidated, but the parameters such as the almanac and the approximate position of the receiver are still valid. At this time, the approximate position of the...

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PUM

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Abstract

The invention discloses a satellite positioning method and device and a computer readable storage medium. The satellite positioning method comprises the steps of: obtaining forecast tracks of all thesatellites in a prior visible satellite table at the current moment according to a pre-stored history broadcast ephemeris and the prior visible satellite table; and carrying out positioning operationaccording to the forecast tracks of all the satellites in the prior visible satellite table at the current moment. Through above scheme, the cold starting time of GNNS receivers can be shortened without increasing the cost of the GNSS receivers.

Description

technical field [0001] Embodiments of the present invention relate to the field of satellite positioning, and in particular, to a satellite positioning method and device, and a computer-readable storage medium. Background technique [0002] With the development and wide application of the Global Navigation Satellite System (GNSS) technology, the requirements for the accuracy, sensitivity and response speed of the GNSS receiver are getting higher and higher. Time To First Fix (TTFF) is an important index to measure the performance of GNSS receivers, which refers to the time when the receiver tracks and captures GNSS satellites and realizes navigation and positioning after it is turned on. The length of the first positioning time directly affects the user experience. [0003] For different application scenarios, the time to first fix includes hot start time, warm start time and cold start time. Generally speaking, the hot start time is the shortest, followed by the warm star...

Claims

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Application Information

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IPC IPC(8): G01S19/31
CPCG01S19/31
Inventor 金锐李蔚戴忠东杨松绍董亮廖小勇李博峰
Owner SHANGHAI FUKONG HUALONG MICROSYST TECH
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