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The main objective of this work is to assess the possibility of improving the achievable image quality using synthetic aperture (SA) approach and to evaluate the performance of the modified algorithm. The modified algorithm is based on the coherent summation of back-scattered RF echo signals with weights calculated for each point and for all possible combinations of transmit-receive pairs. Weights...
A circular array mounted on coated cylinders is considered and its theoretical accurate solutions of pattern synthesis are derived. Based on the sound scattering theory, the sound field can be calculated easily. Since the criterion is to minimize the square error between the desired and synthesized beampattern, the optimal weighting vector, the output beam, and the minimum square error can be all...
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