Bounds on Time-Delay Estimation for Monochromatic Signals

Anthony J. Weiss*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Time-delay estimation (TDE) of monochromatic signals, observed by spatially separated sensors, is widely used for source localization in radar/sonar applications. We use lower bounds to study the accuracy of TDE as a function of signal to noise ratio (SNR), frequency, and sensor separation. We show that the Cramer-Rao bound, which is frequently used as a standard of reference, yields optimistic predictions in many cases.

Original languageEnglish
Pages (from-to)798-808
Number of pages11
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number6
StatePublished - Nov 1987
Externally publishedYes


FundersFunder number
Army Research OfficeDAAL03-86-C-0018


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