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A diffraction-limited lidar provides for effective rejection of background light. Characteristics of a monostatic system are computed. The range sensitivity is generally different from a square-law dependence. The effect of optical refractive turbulence is analyzed. There is a trade-off between background rejection and insensitivity to refractive turbulence. A monostatic system is much less sensitive to refractive turbulence than a bistatic system is.
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Clifford et al. (1983) studied this question.
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