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Baseband module of GPS (global positioning system) receiver and GPS signal acquiring and tracing method

A GPS signal and receiver technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve problems such as inability to give positioning results

Inactive Publication Date: 2013-06-05
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problem that the GPS receiver in the prior art cannot provide positioning results in an indoor environment with signal occlusion and interference, and provides a radio receiver baseband processing module solution for receiving GPS signals with high sensitivity

Method used

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  • Baseband module of GPS (global positioning system) receiver and GPS signal acquiring and tracing method
  • Baseband module of GPS (global positioning system) receiver and GPS signal acquiring and tracing method
  • Baseband module of GPS (global positioning system) receiver and GPS signal acquiring and tracing method

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Embodiment

[0031] Embodiment: a kind of GPS receiver baseband module of the present embodiment, as figure 1 As shown, it includes acquisition and tracking module 1, synchronization and navigation message extraction module 2, star selection calculation module 3, observation quantity calculation module 4, error correction module 5 and navigation positioning calculation module 6 connected in sequence, and acquisition and tracking module 1 It is connected with the radio frequency front-end circuit 7.

[0032] Such as figure 2 As shown, the capture and tracking module 1 includes a first multiplier 101 and a second multiplier 102, the output of the first multiplier 101 is connected to the first Fourier transform circuit 105 through the first integration circuit 103, and the second multiplier 102 The output end is connected to the first Fourier transform circuit 105 through the second integrating circuit 104, and the first Fourier transform circuit 105 is connected to an input end of the thir...

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Abstract

The invention discloses a baseband module of a GPS (global positioning system) receiver and a GPS signal acquiring and tracing method. The baseband module comprises an acquiring and tracing module, a synchronization and navigation message extraction module, a satellite selection calculation module, an observation amount calculation module, an error correction module and a navigation location resolution module which are connected with one another in sequence, wherein the acquiring and tracing module is connected with an RF (radio frequency) front-end circuit. Based on a rapid acquisition algorithm and a high-sensitivity carrier tracing technique, the baseband module can be used for achieving weak signal GPS location in high-noise environment. The baseband module is suitable for all types of GPS location equipment.

Description

technical field [0001] The invention relates to a GPS receiver device, in particular to a GPS receiver baseband module and a GPS signal acquisition and tracking method. Background technique [0002] The satellite positioning system is a satellite-based radio navigation system that can provide all-weather, uninterrupted, high-precision, real-time navigation and positioning services for various carriers on land, sea and air. At present, the most widely used satellite positioning system is the GPS of the United States, which has penetrated into various fields of the national economy and daily life, such as maritime navigation, urban traffic management, commercial logistics management, ship ocean navigation, precise timing, geodesy, precision agriculture etc. [0003] When the GPS signal (spread spectrum signal) reaches the ground receiver, it is quite weak, about -130dBmW, which is 20-30dB lower than the internal thermal noise of the receiver. In particular, in complex enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/29
Inventor 高法钦
Owner ZHEJIANG SCI-TECH UNIV
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