【摘 要】
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With the development of the Beidou satellite navigation system,its receiver sensitivity requirements continue to rise.Compared with tracking,it is difficult to
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With the development of the Beidou satellite navigation system,its receiver sensitivity requirements continue to rise.Compared with tracking,it is difficult to improve the sensitivity for the reason that acquisition needs a larger amount of calculation and facesa high real‐time requirement.As a result,acquisition is the key factors limiting the sensitivity.In this paper,in order to improve the Compass B1‐frequency signal acquisition sensitivity,it designs a standard called the mean detection probability based on the analysis of the pseudo‐code mismatch,Doppler mismatch,coherent integration,non‐coherent accumulation,detection probability and false alarm probability.According to the standard,it achieves a high sensitivity of‐147dBm Compass B1 signal acquisition method and it is verified by simulation.
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