Weak signal acquisition based on circular correlation and half-bit

2010 ◽  
Author(s):  
Yi Zhang ◽  
Chao-chao Jing ◽  
Peng Wu
Keyword(s):  
Signal Acquisition ◽  
Weak Signal ◽  
Circular Correlation

scholarly journals Efficient BeiDou DBZP‐based weak signal acquisition scheme for software‐defined receiver

2018 ◽  
Vol 12 (6) ◽  
pp. 654-662 ◽  
Author(s):  
Qian Meng ◽  
Jian‐Ye Liu ◽  
Qing‐Hua Zeng ◽  
Shao‐Jun Feng ◽  
Rui Xu
Keyword(s):  
Signal Acquisition ◽  
Weak Signal ◽  
Acquisition Scheme

Fast Algorithm with Improved Circular Correlation Method for GPS Signal Acquisition

2013 ◽  
Vol 706-708 ◽  
pp. 794-797
Author(s):  
Yan Min Li ◽  
Qing Ming Yi ◽  
Min Shi
Keyword(s):  
Carrier Frequency ◽  
Fast Algorithm ◽  
Signal To Noise Ratio ◽  
Correlation Method ◽  
Signal Acquisition ◽  
Processing Efficiency ◽  
Coherent Integration ◽  
Circular Correlation ◽  
Acquisition Speed ◽  
Gps Signal Acquisition

In order to improve acquisition speed and carrier frequency accuracy, a fast algorithm to acquire GPS signal is proposed. Signal-to-Noise Ratio is improved by coherent integration and non-coherent integration. The advantages of serial sliding algorithm and circular correlation algorithm are combined to achieve high carrier frequency accuracy. Removing the information of C/A code makes serial search from two-dimensional to one-dimensional to achieve less computation. Simulation shows weak signal of-30dB S/N is successfully acquired. The error of carrier frequency is controlled within 50Hz. So the data processing efficiency for the tracking loop is greatly increased.

scholarly journals GPS Civil Signal Self-Interference Mitigation During Weak Signal Acquisition

2007 ◽  
Vol 55 (12) ◽  
pp. 5859-5863 ◽  
Author(s):  
Yu T. Morton ◽  
Mikel Miller ◽  
James Tsui ◽  
David Lin ◽  
Qihou Zhou
Keyword(s):  
Interference Mitigation ◽  
Signal Acquisition ◽  
Weak Signal
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