The backscattering coefficient of particles is one of the most important inherent optical parameters of water body, and also is the core parameter of ocean color remote sensing. It is very important to measure the backscattering coefficient data of particles in water accurately in-situ for the construction of water color remote sensing model and the authenticity test of water color remote sensing products. In this study, the consistency of these three kinds of in-situ instruments(HydroScat6, VSF3 and BB9) for measuring backscattering coefficient of water particles were compared and analyzed. The results show that the measurements by these three kinds of instruments have good consistency in clean water, but in the turbid water, the measurements of HydroScat6 and BB9 are higher than those of VSF3, and their deviations are significantly increased. Based on numerical simulations and laboratory measurements, it is found that the shapes of particles affect the consistency of measurements by the three instruments, and the consistency is better for spherical particles than that of field particles.
Key words
water particles /
backscattering coefficient /
experimental measurement /
water scatterometer
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