Crosswise Reconstructing and Folding Based Rapid Acquisition Method for Time Division Data Multiplexing Long PN-code Signals

Hong Li, Mingquan Lu, Zhenming Feng

Abstract:	To increase the survivals of Global Navigation Satellite System (GNSS) signals in weak and jammed environments, a technique called time division data multiplexing has been utilized in modernized GNSS signals. Different from conventional techniques, it modulates odd chips but not even chips, and makes conventional long PN-code acquisition methods based on frequency-domain correlation technique cannot be directly applied. To the end, a crosswise reconstructing and folding based acquisition method is proposed in the paper. By rearranging local code replicas and absorbing the advantages of previously proposed folding technique, the method not only is capable of preventing possible energy cancellation of odd and even chips and makes frequency-domain correlation technique applicable to TDDM signals acquisition, but also accelerates the search speed of testing code phases. Simulation results show the validity of the method.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	357 - 364
Cite this article:	Li, Hong, Lu, Mingquan, Feng, Zhenming, "Crosswise Reconstructing and Folding Based Rapid Acquisition Method for Time Division Data Multiplexing Long PN-code Signals," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 357-364.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In