We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Frequency-Locked Detector Threshold Setting Criteria Based on Mean-Time-To-Lose-Lock (MTLL) for GPS Receivers.
- Authors
Tian Jin; Heliang Yuan; Na Zhao; Honglei Qin; Kewen Sun; Yuanfa Ji
- Abstract
Frequency-locked detector (FLD) has been widely utilized in tracking loops of Global Positioning System (GPS) receivers to indicate their locking status. The relation between FLD and lock status has been seldom discussed. The traditional PLL experience is not suitable for FLL. In this paper, the threshold setting criteria for frequency-locked detector in the GPS receiver has been proposed by analyzing statistical characteristic of FLD output. The approximate probability distribution of frequency-locked detector is theoretically derived by using a statistical approach, which reveals the relationship between probabilities of frequency-locked detector and the carrier-to-noise ratio (C/N0) of the received GPS signal. The relationship among mean-time-to-lose-lock (MTLL), detection threshold and lock probability related to C/N0 can be further discovered by utilizing this probability. Therefore, a theoretical basis for threshold setting criteria in frequency locked loops for GPS receivers is provided based on mean-time-to-lose-lock analysis.
- Subjects
PROBABILITY theory; CARRIER-to-noise ratio; APPROXIMATION theory; FREQUENCY-locked loops; GLOBAL Positioning System
- Publication
Sensors (14248220), 2017, Vol 17, Issue 12, p2808
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s17122808