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Hou W.,CAS Institute of Remote Sensing Applications | Yin Q.,Shanghai Center for Satellite Remote Sensing Applications | Li Z.,CAS Institute of Remote Sensing Applications | Liu Y.,CAS Institute of Remote Sensing Applications
International Geoscience and Remote Sensing Symposium (IGARSS) | Year: 2012

While the successive order of scattering (SOS) method is used to solve the radiative transfer equation, however, for the large optical depth with a high single scattering albeldo, the slow convergence will spend a lot of computing time. To speed up the convergence of SOS method, an improved semi-analytic model is developed and the two notes fitting method is used to get the ratio of two successive scattering radiances after the thirteenth scattering. The new semi-analytic model is accurate and efficient and makes the SOS method applicable for optically thick scattering media. With the improved semi-analytic model, the efficiency of the SOS method can be greatly improved. © 2012 IEEE. Source


Xu F.,CAS Shanghai Institute of Technical Physics | Xu F.,University of Chinese Academy of Sciences | Hu Y.,CAS Shanghai Institute of Technical Physics | Yin Q.,Shanghai Center for Satellite Remote Sensing Applications | Yin D.,CAS Shanghai Institute of Technical Physics
Guangxue Xuebao/Acta Optica Sinica | Year: 2015

For the space-based ultraviolet (UV) detection system, quantitatively estimating the clutter radiance from the fluctuations of earth-atmospheric background is beneficial to effectively select the detecting channels (including middle-wavelength and spectral-range) in different scenes, and can improve the comprehensively detecting performance for the space target. Based on the space signal transfer, the space clutter radiance models in different scenes are established in the UV window of 290~400 nm. By means of the models, the main influence factors for the space background clutter radiance are analyzed. In the level of the possible target radiation characteristics and earth-atmospheric background clutter radiance, the detecting performance of system influenced by the clutter is effectively estimated. The results show that the middle-wavelength and spectral-range of detecting system should be 300 nm and 297~306 nm for clear sky, but 299 nm and 296~303 nm respevtively for the field of cirrus clouds. ©, 2015, Chinese Optical Society. All right reserved. Source


Hou W.,CAS Institute of Remote Sensing Applications | Hou W.,University of Chinese Academy of Sciences | Yin Q.,Shanghai Center for Satellite Remote Sensing Applications | Xu H.,CAS Institute of Remote Sensing Applications | And 3 more authors.
International Geoscience and Remote Sensing Symposium (IGARSS) | Year: 2010

The two-stream discrete ordinates method and the two-stream successive orders of scattering method are compared, and the key features of two methods are discussed. Based on the convergence characteristics of successive scattering, we use a semi-empirical model to improve the computing efficiency in the SOS method. Using the delta-M method, we investigate the effect of the two two-stream method for non-absorbing and absorbing case respectively. The 32-stream DISORT is used as the benchmark for assessments of the relative accuracy of the two methods investigated. With the comparisons for the accuracy of flux, the results of the two two-stream methods are almost the same in general and the absorbing media lead to larger errors of flux compared with that of the non-absorbing case. © 2010 IEEE. Source


Ye R.,CAS Shanghai Institute of Technical Physics | Ye R.,University of Chinese Academy of Sciences | Yin Q.,Shanghai Center for Satellite Remote Sensing Applications | Kuang D.-B.,CAS Shanghai Institute of Technical Physics | Hu Y.,CAS Shanghai Institute of Technical Physics
Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves | Year: 2011

A model of solar irradiation on sensors onboard the FY-4 geostationary satellite in the case of solar intrusion was proposed. Solar radiation and the angle of incidence of the sun light on arbitrary surface of satellite can be calculated at any given time. Considering structure of baffle, the solar radiation, angle of incidence and the solar intrusion duration on scanning mirror of atmosphere vertical sounder on any day of the year can be given. The changes in one year are also given. The simulation results are similar with the measured data of GOES-8 (Geostationary Operational Environmental Satellites), and proved the accury of the simulation data. Source


Yin P.,CAS Institute of Remote Sensing Applications | Yin Q.,Shanghai Center for Satellite Remote Sensing Applications
2nd International Conference on Information Science and Engineering, ICISE2010 - Proceedings | Year: 2010

In order to perform the remote sensing models' collaborative retrieval through different medium and different bands, the deep relationship of Radiation Transfer Equation (RTE) in different medium should be understood in advance. Therefore, the author deduced the "classical RTE" on the basis of the radiation transfer theory, and then analyzed the hidden relationship among the RTE in the atmosphere, soil, and water body. The results reveal that the difference of different medium's RTE mostly derives from the mathematical descriptions about their optical properties, and that these equations have great relevance with each other. Due to this, the "classical RTE" is just like an inner "bridge" to link different equations together. © 2010 IEEE. Source

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