Indian Journal of Science and Technology

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A Pre-Compression Algorithm for Optimal Acquisition of Modernized GNSS Signal


Affiliations
1 Department of Electronics and Communication, AU College of Engineering, Visakhapatnam - 530003, Andhra Pradesh, India
2 Samsung India, Bangalore – 560037, Karnataka, India
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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  • A Pre-Compression Algorithm for Optimal Acquisition of Modernized GNSS Signal

Abstract Views: 168  |  PDF Views: 0

Authors

S. Mariappan
Department of Electronics and Communication, AU College of Engineering, Visakhapatnam - 530003, Andhra Pradesh, India
G. Sasibhusana Rao
Department of Electronics and Communication, AU College of Engineering, Visakhapatnam - 530003, Andhra Pradesh, India
Swarna Ravindrababu
Samsung India, Bangalore – 560037, Karnataka, India
S. Sinthuja
Department of Tejas Research Centre of Excellence, AMET University, Chennai - 603112, Tamil Nadu, India
S. Rajesh
Department of Electronics and Communication Engineering, Bharath University, Chennai - 600020, Tamil Nadu, India

Abstract


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



DOI: https://doi.org/10.17485/ijst%2F2015%2Fv8i14%2F75251