Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic
A frequency-domain segmental shift average periodogram acquisition algorithm for GPS signals with low SNR and high dynamic was proposed. First, the parallel rough compensation of Doppler frequency rate and C/A code phase as well as segmental FFT was applied with the received signal. Second, the comp...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2015-03-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015080/ |
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| _version_ | 1841539695879651328 |
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| author | Zhu-lin XIONG Ce-lun LIU Jian-ping AN Ze-bin XIE |
| author_facet | Zhu-lin XIONG Ce-lun LIU Jian-ping AN Ze-bin XIE |
| author_sort | Zhu-lin XIONG |
| collection | DOAJ |
| description | A frequency-domain segmental shift average periodogram acquisition algorithm for GPS signals with low SNR and high dynamic was proposed. First, the parallel rough compensation of Doppler frequency rate and C/A code phase as well as segmental FFT was applied with the received signal. Second, the compensation interval was extended to precise estimation interval based on the number of data segments. Third, the branch with the nearest compensation value was chosen as the estimation branch of each estimation value and the difference of two values was reduced by segmental fre-quency spectrum shift. The correlation value of each estimation branch was obtained by non-coherent accumulation of all shifted frequency spectrums. Last, the maximum correlation value was sent to a constant false alarm rate detector to de-termine whether the acquisition was success. The results show that compared with the traditional periodogram algorithm, the proposed algorithm has much lower computational complexity and a little performance loss. |
| format | Article |
| id | doaj-art-e9614905448242288fc67aca6715c9a1 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2015-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-e9614905448242288fc67aca6715c9a12025-01-14T06:45:50ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2015-03-013624024559691230Low complexity acquisition algorithm for GPS signals with low SNR and high dynamicZhu-lin XIONGCe-lun LIUJian-ping ANZe-bin XIEA frequency-domain segmental shift average periodogram acquisition algorithm for GPS signals with low SNR and high dynamic was proposed. First, the parallel rough compensation of Doppler frequency rate and C/A code phase as well as segmental FFT was applied with the received signal. Second, the compensation interval was extended to precise estimation interval based on the number of data segments. Third, the branch with the nearest compensation value was chosen as the estimation branch of each estimation value and the difference of two values was reduced by segmental fre-quency spectrum shift. The correlation value of each estimation branch was obtained by non-coherent accumulation of all shifted frequency spectrums. Last, the maximum correlation value was sent to a constant false alarm rate detector to de-termine whether the acquisition was success. The results show that compared with the traditional periodogram algorithm, the proposed algorithm has much lower computational complexity and a little performance loss.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015080/GPSC/A code acquisitionlow complexityhigh dynamiclow signal-to-noise ratio |
| spellingShingle | Zhu-lin XIONG Ce-lun LIU Jian-ping AN Ze-bin XIE Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic Tongxin xuebao GPS C/A code acquisition low complexity high dynamic low signal-to-noise ratio |
| title | Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic |
| title_full | Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic |
| title_fullStr | Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic |
| title_full_unstemmed | Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic |
| title_short | Low complexity acquisition algorithm for GPS signals with low SNR and high dynamic |
| title_sort | low complexity acquisition algorithm for gps signals with low snr and high dynamic |
| topic | GPS C/A code acquisition low complexity high dynamic low signal-to-noise ratio |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015080/ |
| work_keys_str_mv | AT zhulinxiong lowcomplexityacquisitionalgorithmforgpssignalswithlowsnrandhighdynamic AT celunliu lowcomplexityacquisitionalgorithmforgpssignalswithlowsnrandhighdynamic AT jianpingan lowcomplexityacquisitionalgorithmforgpssignalswithlowsnrandhighdynamic AT zebinxie lowcomplexityacquisitionalgorithmforgpssignalswithlowsnrandhighdynamic |