CAPI在Windows系统中的实现与应用

基于作者实际开发的项目,研究和分析了CAPI协议的内部机制,在此基础上给出了Windows系统系统平台上系统级CAPI驱动程序和应用级CAPI动态连接库的软件结构框架和实现方法,并且,作为ISDN网络的重要应用,文章给出了在Windows操作系统平台中通过系统级CAPI程序调用接口将ISDN设备接Internet的2种方案：将ISDN设备虚拟成调制解调器的虚拟调制解调器法;将ISDN设备直接接入Windows网络系统而编写NDIS广域网小端驱动程序的方法。     

Sensitivity analysis of single-angle polarization reflectance observed by satellite

Two channels of the Cloud Aerosol Polarimetric Imager, onboard the TanSat-Chinese carbon dioxide observation satellite, are designed to detect the polarization state of radiation reflected by the earth-atmosphere system in a single-viewing angle. Aiming to understand how the earth and atmospheric parameters affect the polarization state of radiation, we conduct a sensitivity analysis of the polarized reflectance at the top of atmosphere （TOA） with respect to the aerosol microphysical parameters, atmo- spheric profiles, and surface polarization properties. It is found that （1） the TOA polarization reflectance at 0.66 μm is most sensitive to the real part of the aerosol complex refractive index, the mean radius of the fine mode aerosol particles, as well as atmospheric pressure and temperature profiles; （2） the TOA polarization reflectance at 1.64 μm is sensitive to the volume ratio between the coarse mode and fine mode particles as well, but it is not sensitive to atmospheric profiles; and （3） surface polarization properties have a relatively weak influence on the TOA polarization reflectance at both 0.66 and 1.64 μm.