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Optimum truncation of a lidar transmitted beam

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Abstract

The problem of optical beam truncation through a transmitter aperture to maximize signal returns from a coherent lidar system is considered. For common transmitter and receiver apertures of the same size, the optimum ratio of receiver diameter to beam diameter is ~1.75 when viewing a far-field diffuse target. The beam diameter is defined as twice the radius at which the beam intensity is exp(−1) of the peak intensity.

© 1988 Optical Society of America

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