Showing papers in "Remote Sensing of Environment in 1984"

TL;DR: In this article, the scattering and extinction coefficients of the SAIL canopy reflectance model were derived for the case of a fixed arbitrary leaf inclination angle and a random leaf azimuth distribution.

TL;DR: In this paper, the idea of two vegetation indices being functionally equivalent has been investigated for making a set of decisions, if the decisions made on the basis of one index could have been equally well made on a basis of the other index.

TL;DR: In this paper, the interception of photosynthetically active radiation (PAR) was evaluated relative to greenness and normalized difference (MSS (7-5)/(7+5) for five planting dates of wheat for 1978-79 and 1979-80 at Phoenix, Arizona.

TL;DR: In this paper, the authors examined the relationship between the microwave backscattering coefficient of a vegetation canopy, sigma (can, 0) and the canopy's leaf area index (LAI).

TL;DR: In this paper, the authors used a profiling laser system to measure various forest canopy attributes, including tree heights, and found that canopy closure is most strongly related to the penetration capability of the laser pulse, with the pulses attenuated more quickly in dense canopy.

TL;DR: The principal components transformation is used to highlight regions of localized change evident in satellite multispectral imagery associated with bushfire damage and with vegetation regrowth following fire burns.

TL;DR: In this paper, a scatter model based on the matrix doubling method for volume scattering and the Kirchhoff method in rough surface scattering is developed, where scattering from vegetation is dominated by leaves and a single leaf is modeled by a thin dielectric disk.

TL;DR: In this paper, the influence of soil background on vegetation discrimination in four-band reflectance space was examined for 20 soils covering a wide range in spectral properties with a hand-held radiometer.

TL;DR: In this article, images from the National Oceanic and Atmospheric Administration satellite's Advanced Very High Resolution Radiometer sensor were used to identify an area about 100 x 400 km in Rondonia (Brazil) where massive forest clearing or deforestation is occurring.

TL;DR: In this article, the authors employed simple regression models, equating spectral radiance indices with Spartina alterniflora biomass to estimate salt marsh biomass, and showed that the considered approach can be successfully used to estimate SMP biomass.

TL;DR: In this paper, the inversion of a canopy reflectance model was used to estimate the area index (LAI) and the average leaf angle (ALA) of a fully covered soybean canopy, using data measured in the field.

TL;DR: In this article, a temporal-spectral profile is the multitemporal representation of Landsat data, optimally in the form of a green vegetation indicator, from a single labeling target.

TL;DR: In this article, the estimability of all the canopy parameters for a vegetation canopy using only canopy reflectance (CR) data and the SAIL model is investigated, using techniques described earlier (Goel and Thompson, 1984a).

TL;DR: In this article, a profile model for crop discrimination, corn-soybean separation using profile parameters, and an automatic labeling (target recognition) method was developed. But, there are disadvantages related to the use of alpha and beta parameters.

TL;DR: In this paper, a method of distinguishing between eroding, stable, and depositional soil environments in central Australia using radiance parameters in the MSS wavebands has been described, which provides a rapid and simple means of mapping erosion status and the level of landscape instability in arid areas with limited vegetation cover.

TL;DR: In this article, the authors presented a methodology to extract characteristics of a given crop type from multitemporal-multispectral Landsat MSS data using weather data and crop calendar model(s).

TL;DR: In this paper, a series of experiments were conducted over several years using an aircraft platform to study the relationship between passive microwave data and surface soil moisture and the results indicated that the basic cause and effect relationships between sensor measurements and soil moisture can be extrapolated from theory and small scale tests to larger resolution elements observed by the aircraft.

TL;DR: In this paper, a model for simulating the measured backscattering coefficient of vegetation-covered soil surfaces includes both coherent and incoherent components of the backscattered radar pulses from a rough sil surface.

TL;DR: In this article, the spectral characteristics of the Landsat-4 MSS and TM are compared using signal counts simulated from field-measured reflectance spectra, and the Dave atmospheric model and pre-launch sensor characteristics are also used in the simulation.

TL;DR: In this article, high-resolution multispectral scanner (MSS) imagery of Savannah River nontidal wetlands were analyzed to identify useful spectral bands for discriminating among National Wetland Inventory classes, where the classes cluster in n-dimensional feature space, and what wetland classification accuracies can be expected.

TL;DR: In this article, the authors used an interactive computer algorithm to calculate surface flow components from displacement of surface pattern features and elapsed time, and gave estimates of speed and direction for motion along the Oyashio Front and over an anticyclonic eddy between the First and Second Oyashi Intrusions.

TL;DR: Shade and sun leaves of Valencia orange were collected to evaluate comparative effects of their leaf chlorophyll concentration, water content, thickness, and mesophyll volume of air on visible light reflectance, specifically the 0.45-, 0.55-, and 0.65-μm wavelength as discussed by the authors.

TL;DR: In this article, the same features derived from multitemporal Thematic Mapper (TM) data would also prove effective in separating these two crop types, and, in fact, if algorithms developed for MSS could be directly applied to TM.

TL;DR: In this paper, the concept of an "angle transform" is introduced, which allows the formation of functions of reflectances at different view zenith and azimuth angles, which are either sensitive or insensitive to a certain agronomic parameter.

TL;DR: In this paper, Landsat imagery of the Kenya coast, in conjunction with meteorological, oceanographic, and river discharge data, was used to analyze coastal movement of suspended sediment from the Tana and Sabaki Rivers.

TL;DR: In this article, the application of Landsat MSS, NOAA/TIROS AVHRR, and NIMBUS CZCS to study the La Plata River is analyzed.

TL;DR: In this paper, a technique for evaluating crop temporal-spectral development patterns (profiles) was described and applied to the analysis of cultural and environmental factors as they affect the reflectance characteristics of corn and soybean canopies.

TL;DR: In this article, a field experiment was conducted utilizing artificial arrangements of plant components during the summer of 1982 to examine the effects of corn canopy structure and plant water content on microwave emission.

TL;DR: In this article, the authors investigated the possibility of estimating agronomic and spectral parameters for a vegetation canopy from the canopy reflectance (CR) data in the infrared region for a set of solar/view directions.