Multi-C/A code acquisition method

Yao Cheng Lin, Shau-Shiun Jan

Research output: Contribution to conferencePaperpeer-review

5 Citations (Scopus)

Abstract

There are about 30 GPS satellites in space, but the number of satellite received by a conventional receiver is about 10 or 11 under the clear sky. When the users are in urban area or any difficult environment, the number of satellite in view will be significantly reduced. Thus, the acquisition method needs to be improved to identify more satellites. If the receiver extends the searching space or increases the coherent integration time and non-coherent stages, then it needs more time to identify all satellite. The proposed idea in this paper is to acquire the satellite with strongerpower first, and it will then change the acquisition method to deal with the satellite with weak power. This new acquisition method will slightly change the conventional FFT method, and it can combine with the other acquisition methods for the weak signal process. The main algorithm of this new acquisition method is to process the convolution with the summation of multi-C/A codes, and we call that Multi-C/A code acquisition method". The new method can save the processing time to acquire strong power satellite first, and the saving in the processing time could be used to acquire weak power satellite with other acquisition methods.

Original languageEnglish
Pages594-602
Number of pages9
Publication statusPublished - 2007 Aug 23
EventInstitute of Navigation National Technical Meeting, NTM 2007 - San Diego, CA, United States
Duration: 2007 Jan 222007 Jan 24

Other

OtherInstitute of Navigation National Technical Meeting, NTM 2007
CountryUnited States
CitySan Diego, CA
Period07-01-2207-01-24

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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