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An improved method for microwave radiant brightness temperature imaging
2015 Asia-Pacific Microwave Conference (APMC), 2015The ray tracing method based on space meshing is employed for microwave radiation imaging in this paper. With the scene models and the tracing codes, the correctness and the effectiveness of the space meshing ray tracing method is verified by comparing the reconstructive images and the actual output ones for the radiometer imaging problems in three ...
Chuan Yin +3 more
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Comparison of microwave brightness temperatures and radar reflectivity measurements
SPIE Proceedings, 1994Satellite-sensor based microwave brightness temperatures are compared with radar based reflectivities for a three-dimensional mining cloud. The brightness temperatures are computed using a radiative transfer model based on the discrete-ordinates method.
Emmanouil N. Anagnostou +3 more
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Model for atmospheric corrections to microwave brightness temperature data
Remote Sensing of Environment, 1983Abstract The effects of atmospheric liquid water (cloud) and water vapor on the brightness temperature data acquired by Bhaskara-Satellite Microwave Radiometer at 19.1 and 22.235 GHz near the nadir look angle have been discussed in detail. It has been observed that the net contribution to brightness temperature data due to atmosphere is quite ...
RAO, KS +4 more
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Microwave brightness temperature prediction of plane targets by a neural network
IEEE Transactions on Geoscience and Remote Sensing, 2003Studies on microwave radiation of many targets, such as air, ocean, ice, snow, vegetation, rock, sand, and so on, lead to the radiometric models of the targets. The model uses one or more formulas to represent the radiation of one target. A neural network (NN) is introduced to represent the antenna temperature (AT) or brightness temperature (BT) of the
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IEEE Transactions on Geoscience and Remote Sensing, 2018
We discuss the analytical derivation of the absolute brightness temperature uncertainty of a hollow conical blackbody source for radiometer calibration. We introduce a Monte Carlo uncertainty propagation analysis method to quantify uncertainty contributions from nonideal emissivity, physical temperature, and antenna pattern, which are the three major ...
Derek A. Houtz +3 more
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We discuss the analytical derivation of the absolute brightness temperature uncertainty of a hollow conical blackbody source for radiometer calibration. We introduce a Monte Carlo uncertainty propagation analysis method to quantify uncertainty contributions from nonideal emissivity, physical temperature, and antenna pattern, which are the three major ...
Derek A. Houtz +3 more
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Atmospheric correction of passive microwave brightness temperature on the estimation of snow depth
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019We discussed atmospheric correction of passive microwave over China in the snow covered area. SSM/I brightness temperature, radiosonde observation database and MODIS water vapor product (MOD05) were used to estimate the atmospheric influence. The traditional gradient SWE algorithm before and after the atmospheric correction was compared, and results ...
Lijuan Shi +3 more
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Intercalibration of Advanced Microwave Scanning Radiometer-2 (AMSR2) Brightness Temperature
IEEE Transactions on Geoscience and Remote Sensing, 2015Here, we describe the characteristics of brightness temperature (Tb) measured by the Advanced Microwave Scanning Radiometer-2 (AMSR2) onboard the Global Change Observation Mission 1st-Water (GCOM-W1). This mission aims to achieve long-term global monitoring of Earth using two polar-orbiting satellite observation systems with three consecutive ...
Arata Okuyama, Keiji Imaoka
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The ocean surface wind direction signal in passive microwave brightness temperatures
IEEE International Geoscience and Remote Sensing Symposium, 2003We analyze the wind direction signal for vertically (v) and horizontally (h) polarized microwave radiation at 37 GHz, 19 GHz and 11 GHz and an Earth incidence angle of 53 deg. We use brightness temperatures from SSM/I and TMI and wind vectors from buoys and the QUIKSCAT scatterometer.
Thomas Meissner, Frank J. Wentz
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IEEE Transactions on Geoscience and Remote Sensing, 2007
We present the results of a study that shows that a simple design modification is sufficient to avoid a major shortcoming in the layout of external warm loads commonly used in the calibration of spaceborne microwave radiometers. The modification consists of placing a layer of Plastazote, a polyethylene foam, over the opening of the warm load enclosure.
Giovanni De Amici +3 more
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We present the results of a study that shows that a simple design modification is sufficient to avoid a major shortcoming in the layout of external warm loads commonly used in the calibration of spaceborne microwave radiometers. The modification consists of placing a layer of Plastazote, a polyethylene foam, over the opening of the warm load enclosure.
Giovanni De Amici +3 more
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Microwave brightness temperature of snow on terrain and lake ice revisited: Data and simulations
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017Two experimental brightness temperature data sets are revisited: A ground-based campaign of terrestrial snow in 1985 and an airborne research program of snow on lake ice in 2007–2014. Both data sets were obtained in southern Finland using multi-frequency microwave radiometers. In this paper both the overall behavior of the brightness temperature during
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