TY - GEN
T1 - Optimal radio emitter location based on the Doppler effect
AU - Amar, Alon
AU - Weiss, Anthony J.
PY - 2008
Y1 - 2008
N2 - Differential Doppler is a common technique for emitter localization in which the signal of a stationary emitter is intercepted by at least two moving receivers. The frequency difference between the receivers is measured at several locations along their trajectories and the emitter's position is then estimated based on these measurements. This two-step approach is suboptimal since each measurement is performed independently, although all measurements correspond to the same position. Instead, a single step maximum likelihood approach is proposed here for known and unknown waveforms. The position is determined directly from all the observations by a search in the position space. Simulations show that the proposed method outperforms the differential Doppler method for weak signals while both methods converge to the Cramer Rao bound for strong signals. Also, in some cases of interest the proposed method inherently selects reliable observations while ignoring unreliable data.
AB - Differential Doppler is a common technique for emitter localization in which the signal of a stationary emitter is intercepted by at least two moving receivers. The frequency difference between the receivers is measured at several locations along their trajectories and the emitter's position is then estimated based on these measurements. This two-step approach is suboptimal since each measurement is performed independently, although all measurements correspond to the same position. Instead, a single step maximum likelihood approach is proposed here for known and unknown waveforms. The position is determined directly from all the observations by a search in the position space. Simulations show that the proposed method outperforms the differential Doppler method for weak signals while both methods converge to the Cramer Rao bound for strong signals. Also, in some cases of interest the proposed method inherently selects reliable observations while ignoring unreliable data.
UR - http://www.scopus.com/inward/record.url?scp=52949144231&partnerID=8YFLogxK
U2 - 10.1109/SAM.2008.4606823
DO - 10.1109/SAM.2008.4606823
M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???
AN - SCOPUS:52949144231
SN - 9781424422418
T3 - SAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop
SP - 54
EP - 57
BT - SAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop
T2 - SAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop
Y2 - 21 July 2008 through 23 July 2008
ER -