Paper Info
Title
GPS-free Localization Using Asynchronous Beacons
Abstract
We consider the problem of localizing two sensors using their TDOA measurements of signals from beacons with known positions. Beacons and sensors have asynchronous local clocks or oscillators with unknown clock skews and offsets. We analyze the effect of the clock skews and offsets on the TDOA estimations, and introduce a novel approach using the difference in TDOA (DTDOA) measurements to mitigate the effects of clock skews and offsets on the location estimates. We propose an algorithm for location and velocity estimation based on DTDOA, and perform simulations to verify the robustness of our algorithm to asynchronous local clocks in the beacons and sensors.
Year
DOI
Venue
2012
10.1109/MSN.2012.37
MSN
Keywords
Field
DocType
localization,unknown clock skew,tdoa estimation,location estimate,tdoa signal measurement,velocity estimation,dtdoa measurement,gps-free localization,clocks,tdoa measurement,asynchronous local clock,oscillator,sensor localization,asynchronous beacon,signals of opportunity,direction-of-arrival estimation,asynchronous clocks,location estimation,asynchronous beacons,time-of-arrival estimation,clock skew,mobile computing,difference in tdoa,novel approach,clock offset,known position
Mobile computing,Beacon,Asynchronous communication,Computer science,Robustness (computer science),Real-time computing,Global Positioning System,Multilateration,Velocity estimation
Conference
ISBN
Citations 
PageRank 
978-1-4673-5808-8
2
0.40
References 
Authors
17
4
Name
Order
Citations
PageRank
Mei Leng122313.44
Wee Peng Tay256152.82
Chong Meng Samson See317519.41
Sirajudeen Gulam Razul49614.41