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

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

Inactive Publication Date: 2012-05-02
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 GPS receiver baseband module of this embodiment, such as figure 1 As shown, it includes a capture and tracking module 1, a synchronization and navigation message extraction module 2, a star selection calculation module 3, an observation quantity calculation module 4, an error correction module 5, and a navigation and positioning solution module 6, which are connected in turn. The capture and tracking module 1 Connected to the RF front-end circuit 7 .

[0032] like figure 2 As shown, the acquisition and tracking module 1 includes a first multiplier 101 and a second multiplier 102. The output end of the first multiplier 101 is connected to the first Fourier transform circuit 105 through the first integrating circuit 103. The output terminal is connected to the first Fourier transform circuit 105 through the second integrating circuit 104, the first Fourier transform circuit 105 is connected to an input terminal of the third multiplier 106, and the input te...

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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] Satellite positioning system is a satellite-based radio navigation system, which 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, geodetic survey, 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...

Claims

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Application Information

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IPC IPC(8): G01S19/29
Inventor 高法钦
Owner ZHEJIANG SCI-TECH UNIV
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