Variable Time Delay Estimation in Colored and Correlated Noise Environment

Nader M. Namazi, Bharat Biswal

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A new iterative algorithm for variable time delay estimation (TDE) is presented. The algorithm is based on a system model where two received signals of the form r1(i) = s(i)+n1(i) r2(i) = s(i-D(i)) + n2(i) are used to estimate the delay. In the model i is the discrete-time index, s(i) is the source signal, D(i) is the (integer) delay waveform, and n1(i) and n2(i) are colored and correlated noises. Based on the minimum mean-squared error criterion and a linearized observation model, we devise an iterative delay estimator. The estimator involves a weighting function that is designated to facilitate the convergence to delay estimate. Simulations are run to test the performance of the algorithm. Results of the simulations are presented.

Original languageEnglish (US)
Pages (from-to)597-604
Number of pages8
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number2
StatePublished - Apr 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering


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