Title :
Bounds for aircraft tracking using a hydrophone array with unknown source frequency
Author :
Rice, Feng ; Gray, Doug A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Adelaide Univ., SA, Australia
Abstract :
The paper derives Cramer-Rao lower bounds (CRLBs) for airborne acoustic source tracking estimates using an array of hydrophones. The paper considers both bearing and Doppler frequency measurements in a two layer (air-sea) acoustic environment with unknown source frequency. Comparison of the CRLBs for known/unknown source frequencies is given; the CRLB for the known source frequency is lower than that for an unknown source frequency. The extended Kalman filter has been simulated and the results verified the new CRLB.
Keywords :
Kalman filters; acoustic signal processing; array signal processing; hydrophones; sonar tracking; target tracking; CRLB; Cramer-Rao lower bounds; Doppler frequency; airborne acoustic sources; aircraft tracking; bearing; extended Kalman filter; hydrophone array; source frequency; tracking estimates; two layer acoustic environment; Acoustic arrays; Acoustic sensors; Aerospace electronics; Aircraft; Frequency estimation; Frequency measurement; Sensor arrays; Signal processing; Sonar equipment; Target tracking;
Conference_Titel :
Intelligent Sensors, Sensor Networks and Information Processing Conference, 2004. Proceedings of the 2004
Print_ISBN :
0-7803-8894-1
DOI :
10.1109/ISSNIP.2004.1417462
