Showing papers in "Remote Sensing of Environment in 1982"

TL;DR: In this paper, the authors investigated the effects of roof emissivity variation of aerial thermogram images and concluded that the observed variation in rooftop emissivities has a minimal effect on the temperatures depicted in thermograms.

TL;DR: In this paper, a mathematical model requiring only single-leaf spectral reflectance data as input is developed for prediction of multiple-leaf reflectance, and the validity of the model appears to be adequate for any number of stacked leaves when leaf-to-leaf variations caused by differences in water content and pigmentation are considered.

TL;DR: In this paper, a technique for determining the error in diurnal irradiance measurements that results from the non-Lambertian behavior of a reference panel under various irradiance conditions is presented.

TL;DR: A method is presented that allows information from ancillary data sources to be incorporated into the results of an existing classification of remotely sensed data in which accuracy is improved from 68% to 81% by incorporating topographic elevation in the manner outlined.

TL;DR: In this article, a C band radar calibration method is presented for agricultural areas near Paris on three different types of surface: wheat stubble, sugar beet, and corn, and it has been found that the sensitivity of radar backscattering coefficient δ 0 to surface soil moisture agrees well with the results obtained by Ulaby et al. (1979) when soil moisture values are expressed as percentage of the field capacity.

TL;DR: Using the multitemporal multispectral data acquired by Landsat satellites and a physical model describing this behavior, new features that are crop specific have been derived and this feature space is two-dimensional irrespective of the number of Landsat observations.

TL;DR: In this paper, a method of population estimation using the multi-spectral scanner (MSS) data is introduced. But the method is limited to the use of ground-covering materials and the land use of the area.

TL;DR: An examination of limitations, requirements, and precision of the linear multiple-regression technique for quantification of marine environmental parameters is conducted and recommendations are made concerning improved selection of ground-truth locations to maximize variance and to minimize physical errors associated with the remote sensing experiment.

TL;DR: In this article, a detailed winter sea surface temperature (SST) pattern in the Yellow Sea and East China Sea is derived from meteorological satellite thermal infrared images, and the isotherms in the pattern are calibrated by temperature measurements in situ.

TL;DR: In this article, the authors investigated large-area relations between satellite spectral data and end-of-season crop yield and found a linear relation between GIN and yield up to GIN values of 40 or 50, covering cases of severe to moderate stress.

TL;DR: In this paper, a regression model is developed between the surface truth data and Landsat digital data for 29 sample sites, and then extended over the entire study area, and results are in general agreement with reported salinity distribution values.

TL;DR: In this paper, the authors used a light aircraft to take photographic measurements of percent reflected visible light and percent polarised visible light (percent PVL) from two summer days and two winter days.

TL;DR: In this paper, the authors measured microwave emission from bare and vegetated fields with dual polarized radiometers at 1.4 GHz and 5 GHz frequencies and compared the measured brightness temperatures over bare fields with those calculated from radiative transfer theory with two constant parameters characterizing surface roughness effect.

TL;DR: A technique has been developed by the authors that uses the horizontal first difference to automatically select the optimum kernel-size that should be used to enhance the edges that are contained in the image.

TL;DR: In this paper, an HRB Singer AN/AAS 14 optical-electronic thermal infrared scanning system was used to test its utility for monitoring one aspect of the water management scheme, the conveyance or canal system.

TL;DR: In this article, single-leaf reflectance measurements for the MC-treated cotton plants were lower at 650 nm and higher at 850 nm than the untreated cotton plants for three of the four sample dates.

TL;DR: In this article, the Lommel-Seeliger law of reflection is applied to the digital terrain data for the Santa Clara valley-Mt. Hamilton region of California, available from the U.S. National Cartographic Information Center.

TL;DR: In this paper, a method for estimating the reflectance of ground sites from satellite radiance data is proposed and tested using the known ground reflectance from several sites and satellite data gathered over a wide range of solar zenith angles.

TL;DR: In this paper, it has been shown that over the tropical oceans the total precipitable water can be estimated from the infrared radiometer data (10.5-12.5 μm) of the Geostationary Meteorological Satellite.

TL;DR: In this article, the authors analyzed the types of urban data that can be detected and/or inferred from satellite-borne L-band systems and compared the contribution of each technique and benefits of combining the data from both procedures.

TL;DR: Two unsupervised classification procedures were applied to ratioed and unratioed LANDSAT multispectral scanner data of an area of spatially complex vegetation and terrain and the monocluster block approach gave higher accuracies than clustering the entire area.

TL;DR: In this article, four dates of Heat Capacity Mapping Mission (HCMM) data were analyzed in order to evaluate HCMM thermal data use in estimating near-surface soil moisture in a complex agricultural landscape.

TL;DR: In this paper, a technique for obtaining the vapor pressure measurement by viewing the cloudless sky directly overhead with the infrared thermometer itself, thus doing away with the need for a second instrument in the remote field assessment of plant water stress by infrared thermometry.

TL;DR: In this paper, the authors assessed the impact of Landsat data acquisition history on classification and area estimation accuracy of corn and soybeans in the U.S. Corn Belt using spectral differences in crops at certain development stages.

TL;DR: In this article, the authors examined the usefulness of thermal data in providing better discrimination between agricultural and residential areas, certain types of urban/industrial areas, water, cloud shadows and water, and bare-extractive areas and bright urban cover types.

TL;DR: A lineament-tectonic map of the area has been prepared and a number of north-south trending post-Siwalik geological faults have been deciphered on the images, which can be related to the northwards drift of the Indian plate as mentioned in this paper.

TL;DR: In this paper, surface circulation patterns inferred from suspended sediment patterns and ice distribution and movement were observed and mapped from the Landsat imagery, indicating that any additional ice formed due to future increased winter discharge from the Bradley River would be likely to accumulate along Homer Spit and to be blown into the outer bay by the dominant northerly winter winds.

TL;DR: In this paper, the third true leaf stage of Gossypium hirsutum L. cv "McNair 220" was exposed to ultraviolet radiation (UVR) for seven days and compared with controls that received only natural light.

TL;DR: In this article, the authors computed the M 2, K 1, and mean currents over an area of the easter Strait of Juan de Fuca from HF radar measurements made during the summer of 1979.