Results 141 to 150 of about 435 (173)
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Applying the OSS radiative transfer method to MODTRAN
SPIE Proceedings, 2006The Optimal Spectral Sampling (OSS) method models band averaged radiances as weighted sums of monochromatic radiances. The method is fast and accurate and has the advantage over other existing techniques that it is directly applicable to scattering atmospheres.
Hilary E. Snell +3 more
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2019
The atmosphere is in constant change as air moves around the globe, causing solar energy to take on different values across the Earth as it rotates. One of the significant effects from this seemingly chaotic situation is the creation and dissipation of clouds and fog. Figure 7.1 illustrates examples of both.
John Schroeder, Larry B. Stotts
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The atmosphere is in constant change as air moves around the globe, causing solar energy to take on different values across the Earth as it rotates. One of the significant effects from this seemingly chaotic situation is the creation and dissipation of clouds and fog. Figure 7.1 illustrates examples of both.
John Schroeder, Larry B. Stotts
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Sensitivity study of Infrared Difference Dust Index by using MODTRAN
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016Infrared Difference Dust Index (IDDI) is often used as a satellite dust product to detect the change of mineral dust aerosols in the atmosphere. And aerosol optical depth (AOD) is also a main measurement for mineral dust aerosol. To qualify dust loading on the regional or global scale, it is very necessary to understand the relation between IDDI and ...
Yingying Jing +4 more
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2019
Atmospheric optical properties play an important role in many problems, such as military-systems analysis, climatology, pollution monitoring, global energy balance, etc. Unfortunately, atmospheric effects from molecular absorption/ scattering, aerosol absorption/scattering, clouds (ice and water), solar scattering, path refraction and surface ...
John Schroeder, Larry B. Stotts
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Atmospheric optical properties play an important role in many problems, such as military-systems analysis, climatology, pollution monitoring, global energy balance, etc. Unfortunately, atmospheric effects from molecular absorption/ scattering, aerosol absorption/scattering, clouds (ice and water), solar scattering, path refraction and surface ...
John Schroeder, Larry B. Stotts
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Multiple Scattering in MODTRAN®
2019MODTRAN® has the option to employ one of several multiple-scattering algorithms while performing MS calculations. Their particular use depends on the accuracy desired and the computation-time tolerance. The previous chapter provided some rules of thumb for MS considerations and selecting the appropriate algorithm. This chapter will discuss MODTRAN’s MS
John Schroeder, Larry B. Stotts
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Surface Reflectance in MODTRAN®
2019Multi-spectral and hyperspectral remote-sensing technologies have been developed over the last thirty years for a variety of applications. These technologies cover the entire optical spectrum, ranging from visible to NIR (VNIR), SWIR, MWIR, and LWIR light. The most mature sensor technology currently covers the VNIR–SWIR portion of the optical spectrum,
John Schroeder, Larry B. Stotts
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Atmospheric correction of hyperspectral data using MODTRAN model
SPIE Proceedings, 2008The solar radiance obtained by a sensor is modified by atmosphere interaction, affected by its path through the atmospheric absorption and scattered in the combined Sun-surface-aircraft. In this paper, we described a method using RTM to simulate atmospheric spectral for deriving surface reflectance from Hyperspectral data (Hyperion).
Yuanliu Xu +4 more
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EOSPEC: a complementary toolbox for MODTRAN calculations
SPIE Proceedings, 2016For more than a decade, Defence Research and Development Canada (DRDC) has been developing a Library of computer models for the calculations of atmospheric effects on EO-IR sensor performances. The Library, called EOSPEC-LIB (EO-IR Sensor PErformance Computation LIBrary) has been designed as a complement to MODTRAN, the radiative transfer code ...
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Study in Retrieval Visibility and Optical Thickness of Fog with MODTRAN
2010 International Conference on Multimedia Technology, 2010In recent years, many scientists have done some work in monitoring the fog, and achieved fruitful results. Now we want to conduct more in-depth study. In this paper, we utilize MODTRAN to simulate the relationship between transmittance and visibility, height of fog. By fitting the relationship between them, we get the formula that calculates visibility
Wengang Zhang +5 more
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Marine environment background synthesis using MODTRAN 4
SPIE Proceedings, 2006To date, physically accurate and reasonably fast background generation in a marine environment has been an elusive objective. The pursuit has been plagued by slow radiative transfer codes and sea BRDF (bidirectional reflectance distribution functions) implementations that traded accuracy for speed. Recent developments in both these fields have put this
Vincent Ross, Denis Dion
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