|Table of Contents|

New Effective Weak GPS Signal Processing Method in Mulitipath Interference Environment

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2009年01期
Page:
64-68
Research Field:
Publishing date:

Info

Title:
New Effective Weak GPS Signal Processing Method in Mulitipath Interference Environment
Author(s):
LI Ming-jiang1ZHANG Yi2ZHANG Zhong-zhao1
1.Communication Research Center,Harbin Institute of Technology,Harbin 150001,China;2.Satellite Application Department,Chinese Academy of Space Technology,Beijing 100086,China
Keywords:
multipath interference global positioning system weak signals high sensitivity receivers frequency domain correlation difference accumulation
PACS:
P228.4
DOI:
-
Abstract:
In order to enhance the gain of the global positioning system(GPS) receiver,a long integration time is needed.The most challenging problems are navigation data transitions,Doppler frequency error and square loss caused by non-coherent integration.For those bad factors,fast Fourier transformation acquisition has much superiorities than traditional ways.Different coherent integration improves integration time and removes square loss.Full-bit searching method estimates the optimal combination of these navigation data very well.Combining the superiorities of the two algorithms,an improved weak signal acquisition method is proposed.Simulation results prove that the proposed method can improve the receiving performances of GPS in multipath interference environment by means of Monte-Carlo.

References:

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Last Update: 2012-11-19