Constant False Alarm Rate Acquisition Algorithm for Compass B1C Signal  

作　　者：Wengang Li Tianrong Qian Yiwei Wang Chen Huang 

机构地区：[1]State Key Laboratory of Integrated Service Networks, Xidian University

出　　处：《China Communications》2019年第11期201-211,共11页中国通信（英文版）

基　　金：supported by the Joint Funds of the Ministry of Education of China(No.6141A02022383);the Fundamental Research Funds for the Central Universities of Ministry of Education of China(No.20101195611)

摘　　要：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.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.

关 键 词：B1C SIGNAL NON-COHERENT ACQUISITION ACQUISITION threshold constant false ALARM rate(CFAR) 

分 类 号：TN9[电子电信—信息与通信工程]