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Interests in Time and Frequency Estimation

Alfred Hero has been interested in time and frequency estimation for
over a decade; his 1984 Princeton PhD thesis was in the area of time delay
estimation. These estimation problems are non-linear and arise in a very
large number of applications including: active and passive radar and sonar,
digital communications, array processing, direction finding, time-of-flight
metrology, and MRFM.

Journal Articles

N. Antoniadis, and A.O. Hero

"Time delay estimation for filtered Poisson processes using an
EM-type algorithm,"

*IEEE Trans. on Signal
Processing*, Vol. 42, No. 8, pp 2112-2123, Aug. 1994.
IEEE Explore reprint
(.pdf) .

N. Petrick, A.O. Hero, N.H. Clinthorne, W.L. Rogers

"A fast least squares estimator arrival time estimator for scintillation
pulses,"

*IEEE Trans. on Nuclear Science *,
Vol. NS-41, No. 4, pp. 758-760, Aug. 1994.
IEEE Explore reprint
(.pdf) .

N. Petrick, A.O. Hero, N.H. Clinthorne, W.L. Rogers, and J.M. Slosar

"Least squares arrival time estimators for single and piled up
scintillation pulses,"

*IEEE Trans. on Nuclear Science *,
Vol. NS-40, No. 4, pp. 1026-1031, Aug. 1993.
IEEE Explore reprint
(.pdf) .

N. Petrick, A.O. Hero, N.H. Clinthorne, and W.L. Rogers

"Least squares arrival time estimators for photons detected using a
photomultiplier tube,"

*IEEE Trans. on Nuclear Science *,
Vol. NS-39, No. 4, pp. 738-743, Aug. 1992.
IEEE Explore reprint
(.pdf) .

A.O. Hero, N.H. Clinthorne and W.L. Rogers

"A lower bound on PET timing estimation with pulse pileup,"

*
IEEE Trans. Nuclear Science*, Vol. NS-38, No. 2, pp. 709-712, April 1991.

A.O. Hero

"Timing estimation for filtered Poisson processes in
additive Gaussian noise,"

*IEEE Trans. on Information Theory*,
Vol. IT-37, pp. 92-106, Jan. 1991. Explore reprint
(.pdf) .

N.A. Petrick, A.O. Hero, N.H. Clinthorne, and W.L. Rogers

"First photoelectron timing error evaluation of a new scintillation detector
model,"

*IEEE Trans. on Nuclear Science*,
Vol. NS-38, No. 2, pp. 174-177, April 1991. Explore reprint
(.pdf) .

N.H. Clinthorne, N.A. Petrick, W.L. Rogers, A.O. Hero,

"A fundamental limit on timing performance with scintillation detectors,"

*IEEE Trans. on Nuclear Science*,
Vol. NS-37, No. 2, pp. 658-663, April 1990. Explore reprint
(.pdf) .

N.H. Clinthorne, A.O. Hero, and N. Petrick

"Lower bounds on scintillation detector timing performance,"

* Nuclear Instrumentation and
Methods in Phys. Res.*, Vol. A299, pp. 548-553, 1990.

N.H. Clinthorne, W.L. Rogers, L. Shao, A.O. Hero, K.F. Koral,

"A new method for assessing position-sensitive detector performance,"

*IEEE Trans. on Nuclear Science*,
Vol. NS-36, No. 2, pp. 1127-1131, April 1989. Explore reprint
(.pdf) .

A.O. Hero and S.C. Schwartz

"Poisson models and mean square error for correlator estimators of time
delay,"

* IEEE Trans. on Information Theory *,
Vol. IT-34, pp. 287-303, March 1988.

A.O. Hero and S.C. Schwartz

"A new generalized cross-correlator,"

*IEEE Trans. on Acoustics, Speech and Signal Processing *,
Vol. ASSP-33, No. 1, pp. 38-45, Feb. 1985.

Also appeared in the book
*Coherence and Time Delay Estimation: An Applied Tutorial for Research,
Development, Test, and Evaluation Engineers*, G.C. Carter, Ed., IEEE Press,
1993.

Conference Proceedings
C. Hory, M. Ting and A. O. Hero, "Frequency estimation derived from a
dynamical system analysis," in Proceedings of IEEE Workshop Statistical
Signal Processing (.pdf) ,
St. Louis, 2003.

J.K. Kim and A.O. Hero

"Error intensity measures for multi-parameter tracking and passive
bearing estimation,"

*Proceedings of the IEEE 1989
International Conference on Acoustics, Speech, and Signal Processing*, pp.
2641-2644, Glasgow, UK, May 1989.

Prof. Alfred Hero III

Dept. of Electrical Engineering and Computer Science

The University of Michigan

1301 Beal Avenue

Ann Arbor, MI 48109-2122

Tel. (313) 763-0564

FAX: (313) 763-8041

WWW:
http://www.eecs.umich.edu/~hero/hero.html

email: