Detection module of backscattering coefficient of sea ice under snow cover

Abstract

The invention discloses a backward electromagnetic scattering coefficient detection module of snow cover-covered sea ice. The backward electromagnetic scattering coefficient detection module comprises an electromagnetic wave parameter module, a snow cover-covered sea ice parameter module, an environmental parameter module, a snow cover-covered brine cell volume module, a snow cover-covered sea ice volume module, a sea ice dielectric constant module, an electromagnetic-wave-penetrated sea ice depth module, a snow cover-covered sea ice backward volume scattering coefficient module, a snow cover-covered sea ice backward surface scattering coefficient module and a snow cover-covered sea ice total backward scattering coefficient module. According to the backward electromagnetic scattering coefficient detection module of the snow cover-covered sea ice, the influence of snow cover covering on the sea ice temperature is considered, and the salinities, the densities and the dielectric constants of the brine cell and the sea ice are calculated by virtue of an empirical model; and the backward volume scattering coefficient of the snow cover-covered sea ice is obtained according to a Rayleigh volume scattering model, and the backward surface scattering coefficient of the snow cover-covered sea ice is obtained by a physical optical method or a geometrical optical method according to the root mean square slope of the surface of the snow, so that the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of microwave ocean remote sensing, and in particular relates to a detection module for backward electromagnetic scattering coefficient of sea ice covered by a snow layer. Background technique [0002] Generally, sea ice refers to the salt water ice formed by direct freezing of seawater, which is a mixture of solid ice, brine, and air bubbles containing salt. Sea ice not only has a huge impact on ocean hydrology, atmospheric circulation and climate, but also directly affects human production, social and economic activities. For example, the drift and diffusion of sea ice can pose serious threats to oil platforms, ships, and shipping. . [0003] At present, observation stations, offshore monitoring platforms, icebreakers and satellite remote sensing are the main methods of sea ice monitoring. Light wave, infrared and microwave are commonly used radiation sources for active / passive satellite remote sensors, w...

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The numerical method has higher precision, but the amount of calculation is larger

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