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Satellite navigation system and GPS bimodule time service device

A technology of satellite navigation system and timing module, which is applied in the field of communication devices, can solve problems such as unreliability, and achieve the effect of reasonable structure, simple structure and high reliability of timing

Inactive Publication Date: 2008-08-27
JIANGSU BEIDOU TECHNOLOGY CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a "Beidou No. 1" satellite navigation system and GPS dual-mode timing device with a reasonable structure, which can solve the unreliable problem of unit GPS timing

Method used

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  • Satellite navigation system and GPS bimodule time service device

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Embodiment Construction

[0020] A "Beidou-1" satellite navigation system and GPS dual-mode timing device, comprising a Beidou-1 timing module 1 and a GPS timing module 2, the Beidou-1 timing module and the GPS timing module are respectively connected to a timing information fusion circuit 3.

[0021] The Beidou No. 1 timing module 1 includes a receiver 5 connected to the receiving antenna 4, the receiver 5 is connected to the baseband signal processing circuit 6, and the baseband signal processing circuit 6 is connected to the interface information processing circuit 7; the GPS timing module 2 includes a receiving antenna 8 The connected receiver 9, the receiver 9 is connected with the baseband signal processing circuit 10, and the baseband signal processing circuit is connected with the interface information processing circuit 11; the interface information processing circuit 7 of the Beidou No. 1 timing module is connected with the interface information processing circuit 11 of the GPS timing module C...

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Abstract

The invention discloses a 'BDStar' satellite navigation system and a GPS double mode time service device which comprise a 'BDStar' time service module and a GPS time service module, wherein both time service modules are respectively connected with a time service information fusion circuit. The system and the device which have a reasonable structure adopts 'BDStar' satellite receiver and a GPS satellite receiver redundancy backup to realize double mode time service; therefore, the system and the device, which realize double mode time service, give preference to time benchmark and realize automatic switching.

Description

Technical field: [0001] The invention relates to a communication device. Background technique: [0002] Since the "Beidou-1" satellite navigation system was put into operation in 2002, my country has established a regional satellite navigation and positioning system. The system uses synchronous orbit satellites for navigation and positioning, and also has a strong timing capability. The timing service scope includes my country's territory and Southeast Asia. [0003] New technologies such as 3G, NGN, ASON, and softswitch are the future development direction, and they are also the focus of attention of operators. These new technologies need to support the network system simultaneously. In the network built by two 3G systems, CDMA2000 and TD-SCDMA, high-precision time synchronization (better than 10μs) is required between base station systems, because in soft handover, if RNC (radio network controller) and NodeB (base station ) without time synchronization, there may be a mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S1/02G01S1/04G01S5/02G01S19/03H04B7/26H04W56/00
Inventor 杨俊单庆晓张璞姜剑国乔纯捷陈建云钟小鹏明德祥
Owner JIANGSU BEIDOU TECHNOLOGY CO LTD
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