5 November 2003 Mathematical modeling of input signals for oceanographic lidar systems
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Abstract
Mathematical modeling is employed widely to optimize parameters of oceanographic lidar systems under development and to estimate a system efficiency in a given conditions. The so called “multiple-forward scattering and single-backscattering model” based on small-angle scattering approximation for radiation transfer equation (L.S. Dolin et al.) is brought by now to the level where it is used in engineering design of laser-based depth-sounding instruments, underwater location and imaging sensors, etc. Some recent concerns of optical oceanography such as precision depth measurement in littorals and estimation of ocean-water optical properties from remote sensing data, calls for application of airborne lidar systems with relatively narrow field-of-view (FOV). The case is not covered by known analytical models and necessitates a generalization of corresponding theory. A mathematical model presented in this paper is applicable for lidar return signal from seawater column at arbitrary relation between sounding laser beam divergence and receiver FOV angle. In the limiting cases of wide and narrow FOV the proposed model is shown to be consistent with expressions obtained previously. Model computations of the system attenuation coefficient as a function of receiver FOV angle for various seawater optical properties are found to be in good agreement with well-known results of Monte-Carlo simulation by H.R. Gordon.
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Yuri I. Kopilevich, Yuri I. Kopilevich, Viktor I. Feygels, Viktor I. Feygels, Alexey I. Surkov, Alexey I. Surkov, } "Mathematical modeling of input signals for oceanographic lidar systems", Proc. SPIE 5155, Ocean Remote Sensing and Imaging II, (5 November 2003); doi: 10.1117/12.506980; https://doi.org/10.1117/12.506980
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