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Satellite signal capturing device and method and satellite navigation receiver

A satellite signal capture and satellite technology, applied in the field of communication, can solve the problem of long capture time, achieve the effect of improving capture efficiency and shortening cold start time

Pending Publication Date: 2021-06-04
北京和协航电信息科技有限公司
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Problems solved by technology

[0003] The purpose of the embodiment of the present application is to provide a satellite signal acquisition device and method, and a satellite navigation receiver to improve the problem of long acquisition time in the satellite-by-satellite acquisition method in the prior art

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  • Satellite signal capturing device and method and satellite navigation receiver
  • Satellite signal capturing device and method and satellite navigation receiver
  • Satellite signal capturing device and method and satellite navigation receiver

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0066] Global Navigation Satellite System (GNSS) has become one of the fastest-growing information industries in the world. It has the characteristics of all-weather, global, real-time and continuity, and can provide users with services such as positioning, timing and speed measurement. . At present, the world's four major satellite navigation systems include: GPS of the United States, GLONASS of Russia, Beidou satellite navigation system of China and Galileo satellite navigation system of Europe.

[0067] The main working principle of GNSS is: the navigation message modulates the carrier and the pseudo-random code twice in the form of data to form radio waves and then radiate continuously to the ground. The user obtains the satellite signal in the field of vision through ...

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Abstract

The embodiment of the invention relates to the technical field of communication, and provides a satellite signal capturing device and method and a satellite navigation receiver. The method comprises the steps of inputting digital intermediate frequency data of all satellites in a satellite system to be captured into the satellite signal capturing device and processing into detection data and verification data; meanwhile, generating a local pseudo code of any target satellite and processing the local pseudo code into a detection pseudo code and a verification pseudo code; performing parallel detection on the detection data and the detection pseudo code through a detection unit to obtain a code phase maximum value and a Doppler maximum value; enabling a verification unit to verify the code phase maximum value and the Doppler maximum value according to the verification data and the verification pseudo code to obtain a capture result of the target satellite; and finally, uniformly reporting the capturing results of all satellites in the system to a central processing unit, so that the central processing unit tracks the successfully captured satellites. The capturing efficiency is greatly improved, and the cold start time of the system is shortened.

Description

technical field [0001] The embodiments of the present application relate to the technical field of communications, and in particular, to a satellite signal acquisition device and method, and a satellite navigation receiver. Background technique [0002] At present, for single or multiple systems, the two-dimensional search of Doppler and code phase of different satellite signals is carried out by means of satellite-by-satellite acquisition. Since the total number of visible satellites for each system is more than 32, if the satellites are captured one by one, the time consumption will increase with the increase of the number of satellites to be captured, thus affecting the cold start time of the system. Contents of the invention [0003] The purpose of the embodiment of the present application is to provide a satellite signal acquisition device and method, and a satellite navigation receiver, so as to improve the problem of long acquisition time in the satellite-by-satelli...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/13G01S19/30G01S19/29
CPCG01S19/13G01S19/30G01S19/29
Inventor 王炎曹士龙
Owner 北京和协航电信息科技有限公司
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