Performance of a single-beam pulse-to-pulse coherent Doppler profiler
- 1 July 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Oceanic Engineering
- Vol. 21 (3) , 290-297
- https://doi.org/10.1109/48.508159
Abstract
We report on the testing of a single-beam 1.7-MHz coherent Doppler sonar. The system is PC-controlled, using a digital signal processor (DSP) to acquire and extract the velocity and backscatter amplitude data. Results from a series of tow-tank calibration tests demonstrate an accuracy in the order of 5 mm s/sup -1/ for data rates of 10 profiles/second over a 1-2 m range with 1.5-cm range bins. An expression for system accuracy is developed which allows generalization to other pulse-to-pulse coherent Doppler systems. We present data showing the systematic decorrelation of backscatter signals due to particle advection: increased decorrelation is seen in the transducer near-field. Example observations of velocity profiles in laboratory-generated waves are presented.Keywords
This publication has 9 references indexed in Scilit:
- Single beam, high resolution pulse-to-pulse coherent Doppler profilerPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Open-Channel Flow and Turbulence Measurement by High-Resolution Doppler SonarJournal of Atmospheric and Oceanic Technology, 1994
- Performance of a broad-band acoustic Doppler current profilerIEEE Journal of Oceanic Engineering, 1991
- Probing water turbulence by high frequency Doppler sonarGeophysical Research Letters, 1990
- Development of a Practical Coherent Acoustic Doppler Current ProfilerPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1987
- Pulse-to-Pulse Coherent Doppler Sonar Signal Processing TechniquesJournal of Atmospheric and Oceanic Technology, 1984
- Analysis of Transit Time Effects on Doppler Flow MeasurementIEEE Transactions on Biomedical Engineering, 1976
- Numerical Comparison of Five Mean Frequency EstimatorsJournal of Applied Meteorology, 1975
- A covariance approach to spectral moment estimationIEEE Transactions on Information Theory, 1972