title: Interferometric microwave radiometers for high-resolution imaging of the atmosphere brightness temperature based on the adaptive Capon signal processing algorithm.
abstract: Passive microwave remote sensing from satellites and ground stations has contributed uniquely, and substantially, to the study of atmospheric chemistry, meteorology, and environmental monitoring. As user requirements are raised, in terms of the accuracy and the spatial resolution, a mechanically scanning radiometer, with a real aperture, becomes impractical due to the requirement for a very large antenna size. However, an aperture synthesis interferometric radiometer presents a valuable alternative. The work presented in this paper was devoted to high spatial resolution imaging, using the 37 GHz band interferometric radiometer, developed by ourselves. The spatially adaptive Capon beamforming method was exploited for the imaging, which outperformed the conventional Fourier Transform method. We concluded that the high spatial resolution imaging of the brightness temperature of the atmosphere could be accomplished with an interferometric radiometer equipped with the developed Capon beamforming imaging algorithm.
authors.affiliation: Sensor System Laboratory, Department of Mechatronics, Kwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju, Korea.
authors.forename: Hyuk
authors.initials: H
authors.lastname: Park
authors.forename: Junho
authors.initials: J
authors.lastname: Choi
authors.forename: Vladimir
authors.initials: V
authors.lastname: Katkovnik
authors.forename: Yonghoon
authors.initials: Y
authors.lastname: Kim
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000465:Algorithms; D004784:Environmental Monitoring / Q000379:methods*; D008872:Microwaves; D018531:Spacecraft; D013696:Temperature
chemical_list: D000393:Air Pollutants