Mathematical Model of Non-Coherent-DLL Discriminator Output and Multipath Envelope Error for BOC (α, β) Modulated Signals

作     者：Khaled Rouabah Chebir Saifeddine Salim Atia Mustapha Flissi Djamel Chikouche 

作者机构：Electronics Department LMSE Laboratory University of Mohamed El-Bachir El-Ibrahimi Bordj Bou Arréridj Algeria Electronis Department LIS Laboratory University of M’sila M’sila Algeria 

出 版 物：《Positioning》 (导航（英文）)

年 卷 期：2013年第4卷第1期

页      面：65-79页

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

主　　题：BOC Modulation GNSS PRN Code Multipath Discriminator Envelope Error 

摘      要：In this paper we propose the derivation of the expressions for the non-coherent Delay Locked Loop (DLL) Discriminator Curve (DC) in the absence and presence of Multipath (MP). Also derived, are the expressions of MP tracking errors in non-coherent configuration. The proposed models are valid for all Binary Offset Carrier (BOC) modulated signals in Global Navigation Satellite Systems (GNSS) such as Global Positioning System (GPS) and Future Galileo. The non-coherent configuration is used whenever the phase of the received signal cannot be estimated and thus cannot be demodulated. Therefore, the signal must be treated in a transposed band by the non-coherent DLL. The computer implementations show that the proposed models coincide with the numerical ones.