@article{TUW-121074, author = {Hobiger, Thomas and Ichikawa, Ryuichi and Koyama, Yasuhiro and Kondo, Tetsuro}, title = {Kashima Ray-Tracing Service (KARATS) - Fast ray-tracing through numerical weather models for real-time positioning applications}, journal = {NICT IVS Technical Development Center News}, year = {2007}, volume = {28}, pages = {16--19} }