Title :
Comparisons of infrared extinction by aerosol particles of brass 70Cu/30Zn calculated by the VIEF and the FDTD methods
Author :
Chen, Hsing-Yi ; Fang, Chin-Chyang ; Wang, Hou-Hwa
Author_Institution :
Dept. of Electr. Eng., Yuan-Ze Inst. of Technol., Taoyuan Shian, Taiwan
Abstract :
In the paper, the VIEF and the FDTD methods were used to calculate the specific extinction cross section (SECS) of aerosols of brass 70Cu/30Zn with 14 to 365 particles in the infrared. Models of body-center-like were used for calculations of specific extinction cross section. From theoretical calculations, the values of specific extinction cross section of aerosol particles of brass 70Cu/30Zn obtained by the VIEF and the FDTD methods were 0.02 to 0.3 and 0.04 to 2.8 m2/g, respectively. While from experimental measurements, the value of the specific extinction cross section is 0.6 to 3.78 m2/g. The theoretical results obtained by the FDTD method are in better agreement with those obtained from experimental measurements
Keywords :
aerosols; atmospheric optics; brass; finite difference time-domain analysis; remote sensing; Cu; FDTD method; VIEF method; Zn; aerosol particles; body-center-like model; brass 70Cu/30Zn; infrared extinction; specific extinction cross section; Aerosols; Dielectric losses; Electromagnetic scattering; Extraterrestrial measurements; Finite difference methods; Frequency; Integral equations; Particle scattering; Radar scattering; Time domain analysis;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322242
