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Time service method and device using navigational satellite

A technology for navigation satellites and navigation messages, which is applied to clocks driven by synchronous motors, radio-controlled timers, electronic timers, etc.

Inactive Publication Date: 2012-02-15
TECHTOTOP MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to reduce power consumption, there are strict requirements on the time required to obtain time synchronization, and the existing timing methods are difficult to meet their requirements for timing time and low power consumption

Method used

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  • Time service method and device using navigational satellite
  • Time service method and device using navigational satellite
  • Time service method and device using navigational satellite

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] The satellite timing receiver provides the user with the timing by receiving the time information in the navigation message. The format of the navigation message frame of each satellite system is different, but their navigation message basically includes TOW (Time Of Week, second in a week), WN (Week Number, whole week number), UTC (Universal Coordinated Time, world coordination Time) correction parameters and other information, TOW appears most frequently, followed by WN, and UTC correction parameters appear least and slowest. For example, in the message of GPS, one page of navigation mess...

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Abstract

The invention discloses a time service method using a navigational satellite, which comprises the steps of: starting a time service synchronous operation by a system; firstly acquiring sending time Ti of a navigation message, and synchronizing the current time to hour, minute and second information obtained from the Ti by the system. By adopting the time service method and device, the synchronization time is shortened and the power consumption of a time service receiver is reduced. The invention is suitable for multiple kinds of satellite navigation systems, such as GPS, Big Dipper one-generation navigation satellite, Big Dipper second-generation navigation satellite, GLONASS (Global Navigation Satellite System), GALILEO and other satellite navigation systems. In addition, the invention is also suitable for dual-mode / multi-mode satellite navigation systems and dual-mode / multi-mode hybrid satellite navigation systems.

Description

technical field [0001] The invention relates to a timing method and device using navigation satellites. Background technique [0002] The existing method of time service based on navigation satellites is that the time service receiver captures the tracking satellite and demodulates the sending time of the navigation message of the navigation satellite, the running time of the navigation system of the navigation satellite, obtains the correction parameter UTCp of the world standard time, and calculates the time of the satellite. The distance between the receiver and the receiver is then converted into the navigation signal transmission delay for time synchronization. The receiver can analyze the hour, minute and second information after receiving the sending time of the satellite navigation message, and can analyze the year, month and day information after receiving the navigation system running time of the navigation satellite. Generally, the time service receiver outputs t...

Claims

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Application Information

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IPC IPC(8): G04G7/02G04R20/02
Inventor 代敏夏粮
Owner TECHTOTOP MICROELECTRONICS
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