Unambiguous Tracking Method for Alternative Binary Offset Carrier Modulated Signals Based on Dual Estimate Loop
- Resource Type
- Periodical
- Authors
- Ren, Jiawei; Jia, Weimin; Chen, Huihua; Yao, Minli
- Source
- IEEE Communications Letters IEEE Commun. Lett. Communications Letters, IEEE. 16(11):1737-1740 Nov, 2012
- Subject
- Communication, Networking and Broadcast Technologies
Tracking loops
Correlation
Delay
Modulation
Accuracy
Noise
Receivers
Code tracking loop
global navigation satellite systems (GNSS)
alternative binary offset carrier (AltBOC) modulation
unambiguous tracking
- Language
- ISSN
- 1089-7798
1558-2558
2373-7891
We propose an unambiguous tracking method for Alternative Binary Offset Carrier (AltBOC) modulated signals based on the Dual Estimate Tracking (DET) loops. The proposed method employs a combined PRN code and a pure cosine signal which can be easily implemented in the hardware to make DET loops available to the complicated AltBOC signal structure. The two dimensional correlation function for AltBOC is derived, and an unambiguous delay estimate is deduced according to the correlation function. Simulation results reveal that the proposed method performed better in tracking performance than the traditional unambiguous tracking methods.