@inproceedings{44092865d52b4c4997c0cc390f368b6b,
title = "Rain effect variability analysis in Taiwan",
abstract = "A two year observation (2002-2003) using two 2D optical distrometers at different locations were recorded. The DSD were measured and analyzed for different seasons under various rain rates. It follows that a relationship between rain rate and DSD was established. From statistical regression, it was also found that the DSD follows the Gamma distribution best in most cases. Long-term rain attenuation measurements using a Ka band (28GHz) CW system at vertical polarization were conducted in northern Taiwan. An optical rain gauge which has resolution of 0.01mm and can collect the rain rate every 5 seconds measured the rain rate at the same location. The attenuation due to rain can be estimated by calculating the extinction coefficient over all of the rain drops within the antenna beam volume. Two methods were used to estimate the extinction coefficient. First, assuming that the scattering mechanism follows the Mie scattering approximation, and the rain drops are all sphere. Second, using T-Matrix method and the oblateness of the rain drops vary from 1.0 to 0.8. Making use of the Gamma-distribution for DSD model, a semi-empirical rain attenuation model was then developed. To validate the model, we compared it with the measured data. For the purpose of cross referencing, we also compared it with the ITU-R and Crane models. The results show that the proposed model matched very well with in-situ measurement from a two-year data set. Both the Crane model and the ITU-R model were inadequate, as expected, for a correct interpretation of the accumulated measurement data producing overestimates.",
author = "Tseng, {Chi Huei} and Chen, {Kun Shan} and Chu, {Chih Yuan} and Tzeng, {Yu Chang} and Lin, {Pay Liam} and Shi, {J. C.}",
year = "2005",
doi = "10.1109/IGARSS.2005.1525928",
language = "???core.languages.en_GB???",
isbn = "0780390504",
series = "International Geoscience and Remote Sensing Symposium (IGARSS)",
pages = "4527--4530",
booktitle = "25th Anniversary IGARSS 2005",
note = "2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005 ; Conference date: 25-07-2005 Through 29-07-2005",
}