Sun light reflected from sea surface forms a high intensity solar ray. Sun-glint is created by Fresnel reflection which contaminates ocean color products. It covers up the real physical characteristics of water bodies and interferes with the inversion of ocean remote sensing data precision. In this paper, sun glint regional characteristics are simulated and analyzed in consideration of the different satellite attitude angles and time phases based on Cox–Munk model. The numerical simulation shows that through the satellites adjust attitude dynamically, the contamination area decreases by 11.8%.Onorbit test data are used to evaluate the method precision and it will contributes to the estimation of sun glint regional characteristics and strategy of on-orbit use.
Coastal Zone Imager(CZI) was designed for coastal water body and islands. To analyze the potential application of Chinese
ocean color satellite in coastal zone area and evaluate the image quality, we used subjective and objective evaluation
method and took a comparison between Chinese ocean color satellite and Gaofen series satellite. Subjective evaluation
showed that Chinese ocean color satellite images had a better performance than Gaofen series satellite images in water
bodies. Based on statistical information ,objective evaluation showed that each band gray distribution of Chinese ocean
color satellite images was more dispersed and had a higher separability feature. Applying evaluation showed that Chinese
ocean color satellite also performed better in terms of texture property and classification accuracy. Overall Chinese ocean
color satellite had a high image quality and potential applications in coastal areas.
The multi-angle polarization technique, which uses the intensity of polarized radiation as the observed quantity, is a new remote sensing means for earth observation. With this method, not only can the multi-angle light intensity data be provided, but also the multi-angle information of polarized radiation can be obtained. So, the technique may solve the problems, those could not be solved with the traditional remote sensing methods. Nowadays, the multi-angle polarization technique has become one of the hot topics in the field of the international quantitative research on remote sensing. In this paper, we firstly introduce the principles of the multi-angle polarization technique, then the situations of basic research and engineering applications are particularly summarized and analysed in 1) the peeled-off method of sun glitter based on polarization, 2) the ocean color remote sensing based on polarization, 3) oil spill detection using polarization technique, 4) the ocean aerosol monitoring based on polarization. Finally, based on the previous work, we briefly present the problems and prospects of the multi-angle polarization technique used in China’s ocean color remote sensing.