%0 Dataset
%T Heihe River eco hydrological remote sensing experiment: L-band airborne microwave radiometer data set in the middle reaches of Heihe River Basin (August 2, 2012)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/66bcb6eb-bfc8-4888-bfd2-eefacf28e1a3
%W NCDC
%R 10.12072/ncdc.nieer.db3544.2023
%A Li xin
%A Chetao
%K Airborne ground remote sensing;airborne remote sensing;microwave radiometer
%X This data set was acquired by L-band airborne microwave radiometer on August 2, 2012 in the middle reaches of Heihe River. The L-band frequency is 1.4GHz, zenith angle observation, V polarization and H polarization information; The plane took off from Zhangye airport at 9:00 (Beijing time, the same below) and landed at 14:00. The flight lasted five hours. During the observation period, the flight altitude is about 2300m and the flight speed is about 220-250km / hr. The original data is divided into two parts: microwave radiometer data and geographic location KMZ data. Microwave radiometer data includes two data files of V polarization and H polarization, with a resolution of 700 m. each data file contains the observed TB value and the corresponding scanning beam ID, incident angle, position, time stamp (UTC) and other flight attitude information. The KMZ file gives the TB value distribution data of 1km grid in the flying area at 38.5 incidence angle. The microwave radiometer was calibrated for "hot" and "cold" radiation before and at the end of the aircraft. Electromagnetic wave interference shall be considered for microwave radiometer data. V-polarization TB value is strongly affected by electromagnetic wave interference and H-polarization is less affected