Comparison between measured and calculated contributions of multiply scattered radiation to the transmittance of a light beam through a turbid medium

Bruscaglioni, P.; Zaccanti, Giovanni; Ismaelli, Andrea; Pili, Paolo

doi:10.1029/rs022i006p00899

Cited by 13 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although flexible, the main disadvantage is that, in many cases7 the method is computationally inefficient, however, numerous improvements have been worked out by various researchers in past years and very efficient algorithms are now available [cf. 6,7]. The method used here follows the general approach reported throughout the literature and was developed as a cooperative effort between the University ofTexas (El Paso) and the US Army Research Laboratory [8].…”

Section: Background-review Of Models and Definitionsmentioning

confidence: 99%

Factors affecting signature propagation through intense forward-scattering atmospheres

2003

View full text Add to dashboard Cite

Methods are examined for modeling signature propagation through optically dense atmospheres accounting for both direct signal attenuation, isotropic scattering, and strong forward (multiple) scattering considering both existing analytical approaches and numerical Monte Carlo photon transport simulations. Examples are given for the case of upward propagation through plane layers in the form of angular distribution ftinctions, based on a point source of light, from which one can determine an atmospheric modulation transfer function (MTF) widely used in simulating the effects of obscurants in imaging systems performance models. Methods can also be used to estimate correction factors for compensating errors in transmission measurements due to multiple forward scattering into the sensor field of view. Results suggest that even at large optical thicknesses where the directly transmitted signal is minimal, there is enough spatial contrast in the diffuse signal to make point sources detectable. However the major effect is on the broadening of the received signal which for the case of isotropic scattering yielded values on the order of 5-10 m for the width of the point spread function (PSF) for a sensor field of view of 100 milliradians. For more intense forward scattering the relative signal strength is increased and the PSF widths are decreased.

show abstract

Section: Background-review Of Models and Definitionsmentioning

confidence: 99%

Factors affecting signature propagation through intense forward-scattering atmospheres

2003

View full text Add to dashboard Cite

show abstract

“…On the one hand, we considered a plane parallel geometry (1-D problem) for comparisons between MUSCAT and van de Hulst's doubling method [ 5 ] . On the other hand, we validated MUSCAT in 2-D geometry by comparisons with the theoretical and experimental data of Bruscaglioni et al [6]. Validations for 3-D problems have not been investigated because of the lack of data for such problems.…”

Section: Validations Of the Code Muscatmentioning

confidence: 99%

“…Bruscaglioni et al [6]. They used a He-Ne laser, a cylindrical cell filled with a suspension of polystyrene spheres in water and a detector with an adjustable field of view and adjustable area (Figure 3).…”

Section: Some 2-d Scattering Experiments Have Been Studied Bymentioning

confidence: 99%

Monte Carlo Simulation of Multiple Scattering in arbitrary 3‐D geometry

Briton

Maheu

Gréhan

et al. 1992

Part & Part Syst Charact

View full text Add to dashboard Cite

MUSCAT is a Monte Carlo code for numerical simulation of Multiple Scattering. Only the general restrictive assumptions of the steady‐state, scalar radiative transfer equation are required, hence the MUSCAT code can deal with a broad field of applications. The algorithm follows the physical phenomena as closely as possible and realistic 3‐D problems can be handled without geometric simplifications. Special care has been devoted to the analysis and validation of the pseudo‐random generator subroutine. Global validations of the code in 1‐D and 2‐D geometries have been successfully carried out. An example of application is reported concerning 3‐D studies of visibility in foggy weather.

show abstract

Multiple Wavelength Extinction Technique for Particle Characterization in Dense Particle Clouds

Dittmann

Feld

Samenfink

et al. 1994

Part & Part Syst Charact

View full text Add to dashboard Cite

In utilizing the advantages of extinction measurements in micron and especially submicron particle characterization, the properties of a multiple wavelength extinction technique have been the subject of extended theoretical studies. Furthermore, an experimental set-up was designed which provides high flex-ibility owing to its modular design. The performance of the technique described is demonstrated by a large variety of applications in aerosol and combustion research and in large-scale industrial systems. It was found to be a reliable tool in characterizing dense particulate systems.

show abstract

Comparison between measured and calculated contributions of multiply scattered radiation to the transmittance of a light beam through a turbid medium

Cited by 13 publications

References 9 publications

Factors affecting signature propagation through intense forward-scattering atmospheres

Factors affecting signature propagation through intense forward-scattering atmospheres

Monte Carlo Simulation of Multiple Scattering in arbitrary 3‐D geometry

Multiple Wavelength Extinction Technique for Particle Characterization in Dense Particle Clouds

Contact Info

Product

Resources

About