Showing papers in "Remote Sensing of Environment in 1983"

TL;DR: In this paper, nine predominantly cloud-free NOAA-7 advanced very high resolution radiometer images were obtained during a three-month period during the 1981 rainy season in the Sahel of Senegal.

TL;DR: In this article, the 2-dimensional (2-D) perpendicular vegetation index (PVI) of Richardson and Wiegand and the 4-D tasseled cap of Kauth and Thomas are special cases of n-space indices.

TL;DR: In this paper, a hand-held radiometer having bands similar to the MSS bands of the LANDSAT satellites was used to obtain reflectance data over a drought-stressed and a well-watered wheat plot.

TL;DR: In this paper, a simple formulation is developed and its applicability tested by application to standard meteorological soundings at a time near the overpass of an NOAA operational satellite and it appears that reasonable estimates of surface temperature (±2-3°C) are readily obtained for areas of order 100-300 km2.

TL;DR: In this article, three color enhancements, an overlay of band 5, ratios of bands 5 and 7, and a vegetation index, were generated using 1974 and 1978 Landsat data of Hamilton, Ontario.

TL;DR: In this paper, the inversion of vegetative canopy reflectance models to obtain agrophysical parameters, given measured reflectances, has been investigated for ground-based remote sensing experiments.

TL;DR: In this paper, the water quality parameters turbidity and algal pigment concentration of freshwater lakes have been modeled and predicted using Landsat multispectral scanner data as multiple linear predictors.

TL;DR: In this article, a physically based sensor response model of a row crop was used as the mathematical framework from which several inversion strategies were tested for extracting row structure information and component temperatures using a series of sensor view angles.

TL;DR: In this paper, a linear relationship was found between yield and stress-degree-days over the reproductive period defined by the maximum vegetative index (mss 7 5 ) corresponded to the beginning of head emergence in grain sorghum and the boot-stage in wheat.

TL;DR: In this article, optical cross sections (absorption and scattering per unit concentration of chlorophyll a, suspended mineral, and dissolved organic carbon) were used to generate subsurface irradiance reflectance spectra and upwelling irradiance spectra.

TL;DR: In this article, the authors measured light reflectance and transmittance, and calculated absorptance over the 0.45-0.70 μm waveband of four differently pigmented cotton (Gossypium hirsutum L.) leaves are compared.

TL;DR: In this paper, a multivariate vegetation gradient model was formulated, incorporating AVHRR and climatological data, and a high correlation was found in the vegetation-HF index.

TL;DR: In this paper, the frequency dependence of the surface roughness effect was relatively weak when compared with that of the vegetation effect, and it was found that an increase in roughness increased the brightness temperature of soils and reduced the slope of regression between brightness temperature and soil moisture content.

TL;DR: In this paper, the reflectance model for a uniform crop canopy is extended to include the effects of crops planted in rows, and the effect of row structure is assumed to be caused by the variation in density of vegetation across rows rather than to a profile in canopy height.

TL;DR: In this paper, a linear relation between winter and spring wheat yields and Landsat spectral data at a broad scale is shown for 1978 and 1979, and a common slope of about 1.6 (Bu/A)/unit greenness is discerned for the relation between yield and spectral greenness.

TL;DR: In this paper, hand-held MARK-II radiometric measurements were used to estimate biomass yields and nitrogen content of Alicia grass (Cynodon spp.) plots having five levels of nitrogen fertilization.

TL;DR: In this article, the authors used Landsat imagery to distinguish classes of habitat in south west Queensland and nearby South Australia; the source area of major plagues of the Australian plague locust.

TL;DR: In this paper, it was shown that the linear correlation factor between surface temperature minus satellite temperature in one channel versus the difference in satellite temperatures in two channels is not independent of the difference between satellite sensed equivalent blackbody temperature.

TL;DR: In this paper, a short Spartina alterniflora salt marsh was irrigated with sewage effluent and freshwater, and spectral radiance data expressed as the vegetation index and the infrared index were successfully correlated to increased live leaf biomass in the treated marsh.

TL;DR: In this paper, the satellite-sensed water temperature of Lake Okeechobee was used as an indicator of satellite radiometer repeatability and stability, and a mean correlation coefficient of 0.87 and an average sample standard deviation from regression of 1.57 C during clear nights for four winters (1978-1981).

TL;DR: In this paper, an analysis of the radiative transfer processes in the atmosphere suggests that the ratio between the diffuse radiance flux and the directly transmitted flux may be a useful parameter for investigating the variation of atmospheric optical depth.

TL;DR: In this article, the authors propose an appropriate terminology for use in problems of remote sensing of ground-reflected solar radiation through a turbid atmosphere, which can be used for any remote sensing problem.

TL;DR: In this article, computer-pattern-recognition techniques were used to investigate relationships of Landsat multispectral data to soil patterns under range vegetation in a semi-arid region in Park County, Colorado.

TL;DR: Thematic mapper simulator data collected for the Los Angeles Basin in 1980 were examined to assess their utility for urban and near-urban land-cover delimitations as mentioned in this paper, with the best results obtained by selection of one channel from each of the available major portions of the electromagnetic spectrum.

TL;DR: In this paper, the seasonal changes in chlorophyll-like pigment distribution in the Northwestern Mediterranean Sea (Gulf of Lions) were monitored during the year 1979 using data collected from the Coastal Zone Color Scanner (CZCS), carried on the Nimbus-7 satellite.

TL;DR: In this article, a video system has been developed that displays results of interactions of near-infrared radiation in the 0.78 to 1.1 μm waveband with plant leaves.

TL;DR: If a negative and a positive transparency of the same image at the same scale are overlaid, then the result will be a completely uniform neutral-colored composite with no information content, making this technique of flagging change very economical.

TL;DR: In this article, a Q-switched Nd:YAG laser was deployed at a pier in lower Chesapeake Bay for field testing and the spatial and temporal variations of the phytopigments phycoerythrin and chlorophyll were analyzed.

TL;DR: In this paper, airborne C-and L-band radar data acquired over a test site in western kansas were analyzed to determine corn-field identification accuracies obtainable using single-channel, multichannel, and multidate radar data.

TL;DR: In this article, a method of processing Landsat data is discussed which adjusts for variations in atmospheric path radiance over water bodies, based on ratio-normalized Landsat radiances, it has properties analogous to color mixtures on a chromaticity diagram; hence it is termed "chromaticity analysis".