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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lu Hu Lian BaoWang Wu Peng Li Yan |
| Copyright Year | 2009 |
| Description | Author affiliation: Science Institute, Air Force Engineering University, Xi'an City, ShaanXi province, China (Li Yan) || Electronic Information School, Northwestern Polytechnical University, Xi'an City, ShaanXi province, China (Lu Hu; Lian BaoWang; Wu Peng) |
| Abstract | As the typical CDMA application, the spread spectrum pseudorandom noise (PRN) codes in GPS are C/A code applied to standard positioning service and P code applied to precise positioning service presenfly.P code has a higher tolerance to jamming and spoofing compared with the C/A code, but P code is usually acquired depending on C/A code.In the precondition of good cross correlation and partial autocorrelation of P code, an improved direct P code acquisition algorithm based on unsymmetrical FFT and coherent accumulation is proposed and realized. Compared to conventional slipping correlation method, the time of novel direct P code acquisition algorithm is reduced more than ten times and the computational complexity is reduced rapidly. It's also useful for other direct long PRN codes acquisition. |
| Starting Page | 1769 |
| Ending Page | 1772 |
| File Size | 461745 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424427994 |
| DOI | 10.1109/ICIEA.2009.5138500 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-05-25 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Global Positioning System Signal processing algorithms Jamming Frequency Cities and towns Hardware Field programmable gate arrays Correlators Military computing Array signal processing Coherent Accumulation P Code Direct Acquisition XFAST Unsymmetrical FFT |
| Content Type | Text |
| Resource Type | Article |
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