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IEEE Transactions on Geoscience and Remote Sensing

Issue 4 • Oct. 1980

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Displaying Results 1 - 18 of 18
  • Table of contents

    Publication Year: 1980, Page(s): c1
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  • IEEE Geoscience And Remote Sensing Society

    Publication Year: 1980, Page(s): c2
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  • Wavetilt Characteristics of EM Waves over a Homogeneous Earth Model

    Publication Year: 1980, Page(s):285 - 288
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    A theoretical analysis has been carried out to investigate the effect of resistivity, dielectric constant and angle of incidence on the amplitude and phase of the wavetilt over a homogeneous earth model over a range of frequency from very low frequency (VLF) to broadcast band (BCB). Numerical results for a wide range of above mentioned parameters are presented. Dependence of wavetilt on these fact... View full abstract»

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  • An Empirical Model for the Complex Dielectric Permittivity of Soils as a Function of Water Content

    Publication Year: 1980, Page(s):288 - 295
    Cited by:  Papers (466)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1516 KB)

    The recent measurements on the dielectric properties of soils have shown that the variation of dielectric constant with moisture content depends on soil types. The observed dielectric constant increases only slowly with moisture content up to a transition point. Beyond the transition it increases rapidly with moisture content. The moisture value at transition region was found to be higher for high... View full abstract»

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  • Passive Microwave Remote Sensing of Soil Moisture: The Effect of Tilled Row Structure

    Publication Year: 1980, Page(s):296 - 302
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1403 KB)

    The tilled row structure is known to be one of the important factors affecting the observations of the microwave emission from a natural surface. Measurements of this effect were carried out with both L-and X-band radiometers mounted on a mobile truck on a bare 40 m × 45 m row tilled field. The soil moisture content during the measurements ranged from ~10 to ~30 percent by dry weight. The res... View full abstract»

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  • L-Band Radar Sensing of Soil Moisture

    Publication Year: 1980, Page(s):303 - 310
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2606 KB)

    The objectives of this experiment were to assess the performance of an L-band, 25-cm wavelength imaging synthetic aperture radar (SAR) for soil moisture determination, and to study the temporal variability of radar returns from a number of agricultural fields. A series of three overflights was accomplished during March 1977 over an agricultural test site in Kern County, CA. Soil moisture samples w... View full abstract»

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  • The Magnetic Field Problem And the Analytical Continuation of the Magnetic Field for Two-Dimensional, Homogeneously And Inhomogeneously Magnetized Bodies

    Publication Year: 1980, Page(s):311 - 317
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1015 KB)

    A method is presented for the calculation of the magnetic field strength inside as well as outside a homogeneously or inhomogeneously magnetized two-dimensional body. Employing Strahov's solution for the field problem of a homogeneously magnetized body, a complete solution can be found for the external field of the body only. The calculation scheme developed here agrees with the relations given fo... View full abstract»

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  • The Coal Cutter as a Seismic Source in Channel Wave Exploration

    Publication Year: 1980, Page(s):318 - 320
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (614 KB)

    The detection of faults in coal seams using underground seismic techniques is now well established. In this paper we propose the use of the coal cutter as a seismic source. Coal production, far from being disrupted by hole drilling and shot firing, is an integral part of the technique. View full abstract»

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  • A Survey of Approaches to Solving Inverse Problems for Lossless Layered Media Systems

    Publication Year: 1980, Page(s):320 - 330
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1992 KB)

    In this paper, we survey approaches to solving inverse problems for lossless layered systems. Such systems can be modeled in two different ways, by nonparametric or parametric models. We review both models, but concentrate our attention on inverse and estimation procedures for parametric models. Algebraic inverse procedures are described for determining the reflection coefficient parameters when m... View full abstract»

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  • Two-Dimensional Filters for Signal Processing under Modeling Uncertainties

    Publication Year: 1980, Page(s):331 - 336
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1013 KB)

    Matched and Wiener filters are considered for signal processing applications when the a priori information about signal and noise characteristics is not completely specified. The approach is to design filters which are saddle-point or max-min solutions for the criterion functional (mean-square-error or signal-to-noise ratio) over the classes of allowable signal shapes and signal and noise spectral... View full abstract»

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  • Remote Induction Sounding of Hanna Underground Coal Burn II, Phase 1, Employing Pseudonoise/ Cross-Correlation Techniques

    Publication Year: 1980, Page(s):337 - 347
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1444 KB)

    An underground coal gasification site near Hanna, WY, was remotely sounded with an induction system at the surface one year after the burn. An estimated 1800 tons (40 000 cu. ft.) of coal 275 ft. deep had been converted to low-Btu gas. The wideband loop-loop system employed pseudonoise signals at the transmitter and cross-correlation over 0-50 kHz at the receiver to obtain time signatures in the f... View full abstract»

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  • An Atmospheric Turbulence Probe

    Publication Year: 1980, Page(s):347 - 353
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2817 KB)

    In this paper, a complete low-cost atmospheric turbulence probe, capable of measuring temperature, differential temperature, humidity, horizontal wind speed and direction, and vertical wind component is described. Special care has been taken to minimize the probe's weight so that it may be carried easily by a balloon. Its various sensors, accuracy and frequency response, determined from power spec... View full abstract»

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  • Effect of Texture on Microwave Emission from Soils

    Publication Year: 1980, Page(s):353 - 361
    Cited by:  Papers (66)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1638 KB)

    The intensity brightness temperature (TB) of the microwave emission from the soil is determined primarily by its dielectric properties. The large difference between the dielectric constant of water (≅80) and that of dry soil (3-5) produces a strong dependence of the soil's dielectric constant on its moisture content. This dependence is effected by the texture of the soil because the water ... View full abstract»

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  • Contributors

    Publication Year: 1980, Page(s):362 - 364
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  • Author index

    Publication Year: 1980, Page(s):364a - 364c
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  • Subject index

    Publication Year: 1980, Page(s):364c - 364g
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  • Information for authors

    Publication Year: 1980, Page(s): 364h
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  • Institutional listings

    Publication Year: 1980, Page(s): 364i
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Aims & Scope

 

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (TGRS) is a monthly publication that focuses on the theory, concepts, and techniques of science and engineering as applied to sensing the land, oceans, atmosphere, and space; and the processing, interpretation, and dissemination of this information.

 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Antonio J. Plaza
University of Extremadura