Title :
Motion detection using TDOA and FDOA measurements
Author :
Ulman, R.J. ; Gerantiotis, E.
Author_Institution :
Army Res. Office, Research Triangle Park, NC
fDate :
4/1/2001 12:00:00 AM
Abstract :
A stationary transmitter can be located using two moving receivers using time and frequency difference of arrival (TDOA/FDOA). However, transmitter motion will cause a bias on the FDOA, resulting in inaccurate locations. If motion is detected, the position is known to be inaccurate. This paper contains two algorithms for detecting motion using TDOA and FDOA measurements. The distribution for the two algorithms are derived for each hypothesis and performance is compared using simulation results
Keywords :
frequency measurement; least squares approximations; maximum likelihood estimation; radio direction-finding; radio transmitters; time measurement; FDOA measurements; LRT algorithms; TDOA measurements; frequency difference of arrival; likelihood ratio test algorithm; motion detection; signal modelling; stationary fit test; stationary transmitter location; time difference of arrival; transmitter motion; two moving receivers; Analytical models; Delay; Detection algorithms; Frequency; Motion detection; Motion measurement; Performance analysis; Testing; Time measurement; Transmitters;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
