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- Title
Unambiguous Tracking Method Based on Combined Correlation Functions for sine/cosine-BOC CBOC and AltBOC Modulated Signals.
- Authors
Jiawei REN; Guitong YANG; Weimin JIA; Minli YAO
- Abstract
Unambiguous tracking for Binary Offset Carrier (BOC) modulated signals' is an important requirement of modern Global Navigation Satellite System (GNSS) receivers. An unambiguous tracking method based on combined correlation functions for even/odd order sine/cosine-BOC, Composite BOC (CBOC) and Alternate BOC (AltBOC) modulated signals is proposed. Firstly, a unified mathematical formulation for all kinds of BOC modulations is introduced. Then an unambiguous tracking method is proposed based on the formulation and the idea of pseudo correlation function (PCF) method. Finally, the tracking loop based on the proposed method is designed. Simulation results indicate that the proposed method can remove side peaks while retaining the sharp main peak for all kinds of BOC modulations. The tracking performance for AltBOC is examined and the results show that the proposed method has better performance in thermal noise and long-delay multipath mitigation than the traditional unambiguous tracking methods.
- Subjects
ARTIFICIAL satellite tracking; STATISTICAL correlation; GLOBAL Positioning System; MATHEMATICAL formulas; BINARY number system; COMPUTER simulation
- Publication
Radioengineering, 2014, Vol 23, Issue 1, p244
- ISSN
1210-2512
- Publication type
Article