GPS signal acquisition via compressive multichannel sampling

GPS signal acquisition via compressive multichannel sampling

In this paper, we propose an efficient acquisition scheme for GPS receivers. It is shown that GPS signals can be effectively sampled and detected using a bank of randomized correlators with much fewer chip-matched filters than those used in existing GPS signal acquisition algorithms. The latter use correlations with all possible shifted replicas of the satellite-specific C/A code and an exhaust...

Multichannel Wireless Neural Signal Acquisition System

Compressive Sensing Based Robust Signal Sampling

Signal processing methods have been changed substantially over the last several decades. Traditional sampling theorem of Shannon-Nyquist states that the sampling rate must be at least twice the maximum frequency presented in the signal; however, sampling at the Nyquist rate is inefficient because the signals of interest contain only a small number of significant frequencies relative to the band...

Fast Direct GPS Signal Acquisition Using FPGA

∗ School of Electrical Engineering and Computer Science, Ohio University, Athens, OH 45701, email: [email protected], [email protected], tel: (740)593-1580, fax: (740)593-0007. Abstract − This paper presents a novel P-code generator design strategy and direct GPS P-code acquisition technique. This method not only helps software simulation and simplifies FPGA hardware desi...

Interference Effects on the GPS Signal Acquisition

Intentional or unintentional interference and jamming is one of the major concerns in using the Global Positioning System (GPS) in various critical applications. In spite of the GPS frequency bands being protected by International and Federal Communication Commission (FCC) frequency assignments, there is always a chance of disruption of the GPS signal availability in critical times and applicat...