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Method for quickly acquiring GPS signal and system thereof

A GPS signal, fast technology, applied in the field of satellite positioning reception, to achieve the effect of reducing system power consumption and saving circuit resources

Active Publication Date: 2012-02-29
杭州中科微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, several existing technologies have limitations such as complex counting and the need for auxiliary information

Method used

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  • Method for quickly acquiring GPS signal and system thereof
  • Method for quickly acquiring GPS signal and system thereof
  • Method for quickly acquiring GPS signal and system thereof

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Experimental program
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Embodiment Construction

[0045] figure 1A hardware block diagram of an embodiment of the GPS signal fast acquisition system of the present invention is given, which is a schematic block diagram of the entire system hardware platform of the embodiment. The system hardware platform consists of a correlator 102, a fast capture module 103, a time reference generator 104, an MCU microprocessor 106, and a real-time clock RTC107. The 1021-102n channels of the correlator 102 are connected to the fast capture module 103 and the time reference generator 104 , the fast capture module 103 is connected to the memory 105 and the time reference generator 104, and the MCU microprocessor 106 is connected to 1021-102n channels of the correlator 102, the fast capture module 103, the time reference generator 104 and the RTC107. The method of the invention mainly describes the method for the hardware platform to complete the acquisition of GPS signals. The 2-bit digital low-intermediate frequency GPS signal 101 is sent ...

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Abstract

The invention provides a method for quickly acquiring GPS signals and a GPS signal quick acquiring system which comprises the method. The main hardware parts of the system mainly comprise a quick acquisition module; the quick acquisition module acquires the GPS signals in parallel in large scale, obtains the initial phase and frequency information of the GPS signals and sends the signals to a correlator; and the correlator completes the carrier removal correlation of corresponding phase and frequency, and then accumulates the data and saves the data in a register. A microprocessor schedules the assembly lines of the quick acquisition module and the multi-channel correlator, simultaneously distributes the satellite number of the next quick acquisition module, confirms the data given by thechannels of the correlator by quick detection algorithm processing so as to quickly and accurately acquire the GPS signals.

Description

technical field [0001] The invention belongs to the technical field of satellite positioning and reception, and relates to a method for capturing GPS received signals, in particular to a method for quickly capturing GPS signals and a system thereof. Background technique [0002] Nowadays, the miniaturization, high precision and low power consumption of GPS (Global Positioning System) receiver chips or chipsets have effectively promoted the practical application of GPS positioning, making it gradually applied to high-end electronic devices such as mobile phones and electronic navigation. However, these high-end electronic application devices have put forward very high requirements for the development of satellite positioning receiving technology, not only requiring GPS positioning signals to be quickly captured and working in real time, but also requiring low energy consumption and low cost. Therefore, for GPS receivers, the fast acquisition of GPS signals is a very importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S1/02G01S5/02
Inventor 曾丹丹何文涛徐建华李晓江
Owner 杭州中科微电子有限公司
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