The prediction of spectral water leaving radiance and remote sensing reflectance from a coupled physical/ecological/optical simulation is one of the goals of the ONR Hyperspectral Coastal Ocean Dynamics Experiment (HyCODE). This goal requires coupling a high-resolution circulation model (ROMS) to provide realistic physical forcing to a dynamic ecological model that produces depth-dependent dist...

Realistic modeling of high-resolution earth radiation signals in the visible-thermal spectral domain remains difficult, due to complex interdependence induced by heterogeneous and rugged features land surface. To find trade-off between accuracy efficiency for image simulation, this paper established a unified simulation framework entire domain, based on energy balance solar-reflected thermal co...

According to the pigment theory of matching, metameric matches result from the equation of the rates of photoisomerizations for each of the three classes of cone pigments excited by the two matched fields. If true, matches are radiance-invariant and additive. Tests of the theory in this paper show small but ubiquitous failures in radiance-invariance due to systematic rather than random errors i...

This paper describes a new algorithm to compute radiance in a synthetic environment. Motivated by the success of wavelet methods for radiosity computations we have applied multi wavelet bases to the computation of radiance in the presence of glossy reflectors. We have implemented this algorithm and report on some experiments performed with it. In particular we show that the convergence properti...

1. ABSTRACT A new methodology to retrieve cloud optical properties using hyper-spectral infrared measurements is presented. The new method makes use of line by line multiple scattering (LbLMS) simulations to retrieve spectrally resolved cloud optical depths from spectral radiance data. The retrieval requires knowledge of the clear sky profile and cloud boundaries. The cloud microphysical proper...

When the dynamic range of radiance values in a scene exceeds the capabilities of a camera, a single picture can only capture one brightness range of the scene faithfully at a time. We propose a system for creating high dynamic range (HDR) videos that overcomes this limitation. It acquires a number of images under varying exposure settings from dark to bright, each containing new scene radiance ...

The Cloud Absorption Radiometer (CAR) was flown aboard the University of Washington Convair 580 (CV-580) research aircraft during the Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS) field campaign and obtained measurements of bidirectional reflectance distribution function (BRDF) of the ocean in July and August 2001 under different illumination conditions with solar zenit...

VOLUME 15, NUMBER 2, 2005 LINCOLN LABORATORY JOURNAL 299 M odern spaceborne atmospheric sounders measure radiance with unprecedented resolution and accuracy in spatial, spectral, and temporal dimensions. For example, the Atmospheric Infrared Sounder (AIRS), operational on the NASA Earth Observing System (EOS) Aqua satellite since 2002, provides a spatial resolution of 15 km, a spectral resoluti...

Thermochemical relaxation behind a normal shock in Mars and Titan gas mixtures is simulated using a CFD solver, DPLR, for a hemisphere of 1 m radius; the thermochemical relaxation along the stagnation streamline is considered equivalent to the flow behind a normal shock. Flow simulations are performed for a Titan gas mixture (98% N2, 2% CH4 by volume) for shock speeds of 5.7 and 7.6 km/s and pr...

The first step in the coastal zone color scanner (CZCS) atmospheric-correction algorithm is the computation of the Rayleigh-scattering contribution, Lr(r), to the radiance leaving the top of the atmosphere over the ocean. In the present algorithm Lr(r), is computed by assuming that the ocean surface is flat. Computations of the radiance leaving a Rayleigh-scattering atmosphere overlying a rough...