Name
Abstract | ||
|---|---|---|
Acquisition of signals in noise, in particular CDMA signals like the Global Positioning System (GPS) L1 C/A signal, can be carried out using fixed or variable dwell times. In this work, a sequential multiple dwell procedure for verifying acquisition is examined and compared to a fixed time single dwell strategy. The procedure under analysis is the sequential probability ratio test (SPRT) which has not been widely used for GPS applications, possibly due to its sensitivity to attenuation of the received signal relative to the design point. In this paper, it is shown that for the received signal to noise ratios (SNR) typically encountered in GPS, the SPRT can outperform the single dwell detector strategy in terms of mean acquisition time. In addition, it is shown that the single dwell (SD) detector's fixed dwell time approaches the worst case dwell time for the SPRT, as design point carrier to noise ratio decreases. Thus, for very weak signals, the SPRT can be a better choice of verification algorithm than the SD strategy, under certain constraints. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/ICC.2009.5199333 | Dresden |
Keywords | Field | DocType |
gps application,gps acquisition,single dwell,fixed dwell time,sequential probability ratio test,single dwell detector strategy,single dwell strategy,fixed time,worst case dwell time,mean acquisition time,sequential multiple dwell procedure,variable dwell time,correlators,signal detection,statistics,carrier to noise ratio,attenuation,signal to noise ratio,sequential analysis,signal analysis,global positioning system,dwell time,detectors,code division multiple access,data mining,sequential estimation | Dwell time,Signal processing,Detection theory,Computer science,Carrier-to-noise ratio,Signal-to-noise ratio,Real-time computing,Sequential estimation,Detector,Sequential probability ratio test | Conference |
ISSN | ISBN | Citations |
1938-1883 E-ISBN : 978-1-4244-3435-0 | 978-1-4244-3435-0 | 5 |
PageRank | References | Authors |
0.72 | 9 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Niamh O'Mahony | 1 | 18 | 2.62 |
| Cillian O'Driscoll | 2 | 19 | 2.03 |
| Colin C. Murphy | 3 | 155 | 18.19 |