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China's Feng Yun-3A (FY-3A) meteorological satellite is a second-generation polar-orbiting meteorological satellite launched in May 2008. The Microwave Humidity Sounder (MWHS) is the main payload, designed for atmospheric humidity sounding. Before the launch of MWHS, a series of experiments was conducted in a thermal/vacuum (T/V) chamber. This letter describes the MWHS T/V calibration, in which the...
Back-propagation artificial neural networks (BP-ANN) have been used to retrieve humidity profiles using microwave humidity sounder (MWHS) measurements onboard FENGYUN-3A (FY-3A) satellite over Beijing region in real time. In the present study, an attempt has been made to inner-compare these profiles in the month of September of 2008. It has been found that in general the humidity profiles retrieved...
The paper introduces two widely used atmospheric absorption models: MPM by Liebe in 1989 and Ulaby in 1976. Compare between them based on ground-based microwave radiometer, this paper presents an atmospheric absorption model with improvement including local line absorption, noresonant dry air spectrum, water vapor continuum, suspended water droplet refractivity and rain effects. Also, using the improved...
A multi-frequency, ground-based microwave radiometer (MWR) for ocean remote sensing has been designed and developed in this paper. It will be used on the offshore oil platform and provide atmospheric soundings of physical temperature and liquid water vapor using channels in the oxygen resonance band (6.8GHz) and water vapor resonance band (23.8GHz). The other channels at 10.7GHz, 18.7GHz and 37GHz...
FY-3A (Feng Yun means wind and cloud in Chinese) meteorological satellite of China was successfully launched on May 27, 2008. MWHS (MicroWave Humidity Sounder) is a very important payload for measuring global atmospheric water vapour profiles. In this paper, the authors will describe the system configuration and parameters of MWHS. Moreover it gives the testing results in-orbit and comparing with...
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