Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 14, Pages: 1-6
S. Mariappan1 *, G. Sasibhusana Rao1 , Swarna Ravindrababu2 , S. Sinthuja3 and S. Rajesh4
1 Department of Electronics and Communication, AU College of Engineering, Visakhapatnam - 530003, Andhra Pradesh, India; [email protected], [email protected]
2 Samsung India, Bangalore – 560037, Karnataka, India; [email protected]
3 Department of Tejas Research Centre of Excellence, AMET University, Chennai - 603112, Tamil Nadu, India
4 Department of Electronics and Communication Engineering, Bharath University, Chennai - 600020, Tamil Nadu, India
The acquisition of GNSS signal is the most challenging part of any GNSS receiver. With the modernized GNSS system having longer code length and wider bandwidth, the size of the data block becomes large. To reduce the computational load of the processor, the reduction in the size of the data block without compromise in the acquisition loop performance provides overall improvement to the system. Here, a model is developed for acquisition of GPS signal L1 and L2C by compressing the input raw GPS signal with sequences of perfect periodic autocorrelation properties such as the Ipatov sequence. A compression matrix of the required dimension is constructed for compressing the input GPS signal. The improvement in the acquisition performance of the model is discussed.
Keywords: Acquisition, Compression, GPS, L2C, Modernised GPS
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