Beam Pattern Shaping for Transmitter Array
Patent application, Filed 31 Mar 98
DEPARTMENT OF THE NAVY WASHINGTON DC
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A method to shape a transmit beam pattern of a transmitter array. A baseline time delayphase coefficient is set for each transmitter. A plurality of beam pattern intensities are iteratively generated using the set of baseline time delaysphase coefficients and a plurality of sets of adjusted time delaysphase coefficients. Each beam pattern intensity has a unique set of time delaysphase coefficients associated therewith. Each one of the sets of adjusted time delaysphase coefficients differs from the set of baseline time delaysphase coefficients by only one time delayphase coefficient. Each beam pattern intensity is compared with the optimal beam pattern intensity to determine which one of the set of unique time delaysphase coefficients minimizes a difference between the optimal beam pattern intensity and a corresponding one of the plurality of beam pattern intensities. The set of baseline time delaysphase coefficients is then replaced with the one of the set of unique time delaysphase coefficients that minimizes the difference. The above steps of iterative generation, comparing and replacing are repeated until the difference can no longer be reduced.
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