Abstract
In order to improve the sensitivity of the Compass B1C signal acquisition for the receiver, the principle of constant false alarm rate (CFAR) is applied for the B1C pilot channel acquisition to realize the dynamic adjustment of the threshold of acquisition against the carrier to noise ratio. The non-coherent data/pilot combined acquisition algorithm for B1C signal is analyzed to make full use of the power of the B1C signal under the condition of low carrier to noise ratio. On this basis, to improve the acquisition sensitivity of the receiver, the principle of constant false alarm probability is applied for the non-coherent data/pilot combined acquisition algorithm. Theoretical analysis and simulations show that the non-coherent data/pilot combined acquisition algorithm with CFAR improves the B1C signal acquisition sensitivity of the receiver significantly, and achieves a better Receiver Operating Characteristic compared with the traditional acquisition algorithms.
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