Fourth-order Spectra Of Sonar Signals
- 24 August 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
In active sonar, when a long pulse is transmitted the return echo is usually amplitude modulated from target dynamics, Doppler spreading, Or medium effects. Uncler these conditions, the spectrum can be severly distorted making detection and classification inlpossible. Using an amplitude modulated coded pulse train, it is shown in the paper that the fourth-order spectrum can extract range and Doppler information while for the same conditions the spectrum cannot.Keywords
This publication has 6 references indexed in Scilit:
- High-order spectra of mixture processesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Identification of nonminimum phase systems using higher order statisticsIEEE Transactions on Acoustics, Speech, and Signal Processing, 1989
- Bispectrum estimation: A digital signal processing frameworkProceedings of the IEEE, 1987
- Bispectrum estimation: A parametric approachIEEE Transactions on Acoustics, Speech, and Signal Processing, 1985
- Deconvolution and Estimation of Transfer Function Phase and Coefficients for Nongaussian Linear ProcessesThe Annals of Statistics, 1982
- TESTING FOR GAUSSIANITY AND LINEARITY OF A STATIONARY TIME SERIESJournal of Time Series Analysis, 1982