A Non-linear Algorithm for Digital Beamforming of a Wideband Active Sonar Array
نویسنده
چکیده
A signal interpolation technique based on the Hilbert transform of a signal is proposed. This technique can be efficiently used for fractional time delay estimation. A useful application of the technique is demonstrated using examples of digital beamforming with wideband signals. Conventional wideband signal beamforming is computationally intensive due to the calculation of fractional time delays. It is shown that the proposed Hilbert transform based fractional time delay estimation provides simple and computationally efficient, yet very accurate results, and therefore, suitable for digital beamforming of wideband signals.
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