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Jul 11, 2010
07/10
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KERZHAKOVICH, V. V.; MAROV, M. Y
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MEASUREMENT DATA OF THE HORIZONTAL COMPONENT OF THE WIND VELOCITY ON VENUS DURING DESCENT OF THE VENERA 8 PLANETARY PROBE ARE PRESENTED. THE AZIMUTH OF THE WIND DIRECTION, COUNTED OFF CLOCKWISE FROM THE NORTH POLE DIRECTION, IS APPROXIMATELY 115 DEG, I.E., THE MEASURED COMPONENT WAS CLOSE TO THE ZONAL (LATITUDINAL) ONE. THE WIND VELOCITY COMPRISED FROM 0.5 M/SEC NEAR THE SURFACE TO 140 M/SEC AT ALTITUDES OF APPROXIMATELY 50 KM. THE GENERAL MOTION DIRECTION AT ALL ALTITUDES REMAINS CONSTANT AND...
Topics: EARTH RESOURCES, MULTISPECTRAL BAND SCANNERS, DATA ACQUISITION, DATA PROCESSING, VIDEO EQUIPMENT
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278
Jul 11, 2010
07/10
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AKOYEV, I. G.; YUROV, S. S
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eye 278
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THE EFFECT OF HIGH AND SUPER HIGH ENERGY HADRONS ON THE FUNCTIONS AND GENETIC STRUCTURES OF DIFFERENT ORGANISMS IS DISCUSSED. MATERIALS FROM STUDIES PERFORMED ON A 70 GEV PROTON ACCELERATOR, WITH A SOURCE OF GAMMA RADIATION AND MATERIAL FROM VARIOUS SOVIET AND AMERICAN SPACE STUDIES WERE USED. ALTHOUGH THE RESEARCH CONDUCTED SHOWED THAT THE EFFECT OF THE STRONG INTERACTIONS OF HIGH ENERGY HADRONS CAN CAUSE SIGNIFICANT DAMAGE TO CELLULAR AND GENETIC STRUCTURES, RADIATION-PROTECTIVE MEASURES MAY...
Topics: CALIFORNIA, IRON COMPOUNDS, PHOTOMAPPING, ROCKS, SILICATES, EREP, MULTISPECTRAL BAND SCANNERS,...
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The present day knowledge is reported of comets and asteroids and recommendations for a development program needed to provide instruments to achieve certain scientific objectives are also presented. Discussions include reports on the primary experiments and instruments, the instruments of potential applicability, mission classes and parameters, mission opportunities, and vehicular technology. An annotated bibliography and recommendations for flight projects, propulsion systems, and experiment...
Topics: HAZE, MULTISPECTRAL BAND SCANNERS, BRIGHTNESS, EARTH RESOURCES PROGRAM, HISTOGRAMS, SIGNAL TO NOISE...
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220
Jun 15, 2011
06/11
by
Anderson, R. D
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eye 220
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Several boom arrangements were proposed for the Hawkeye spacecraft. The design chosen to fly consists of one pair of stem roll-out booms and a set of telescopic booms. Some of the advantages of choosing this boom configuration were that the booms could be stored in the belt line area, which is near the center of gravity of the spacecraft, and also with the approach the telescopic booms could be extended at the spacecraft's initial spin rate (180 rpm). By being able to extend these booms at the...
Topics: LANDSAT 1, SATELLITE-BORNE PHOTOGRAPHY, SWEDEN, EARTH RESOURCES PROGRAM, MULTISPECTRAL BAND...
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190
Jun 21, 2010
06/10
by
Bond, J. A.; Gutstein, M. U
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eye 190
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Performance and transient testing of single tube potassium boiler for Rankine nuclear power plant system
Topics: AURORAL SPECTROSCOPY, MULTISPECTRAL BAND SCANNERS, PHOTOMETERS, AIRBORNE EQUIPMENT, LIGHT EMISSION,...
208
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Jun 15, 2011
06/11
by
Kirkpatrick, D. L
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eye 208
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To meet the life and reliability requirements of five to ten year space missions, a new solar array drive mechanism for 3-axis stabilized vehicles has been developed and is undergoing life testing. The drive employs a redundant lubrication system to increase its reliability. An overrunning clutch mechanism is used to permit block redundant application of two or more drives to a common array drive shaft. Two prototype actuator and clutch assemblies, in continuous vacuum life test under load at...
Topics: LANDSAT 1, MULTISPECTRAL PHOTOGRAPHY, SWEDEN, EARTH RESOURCES PROGRAM, MULTISPECTRAL BAND SCANNERS,...
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648
Jul 11, 2010
07/10
by
NON
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Technology assessment studies were conducted to provide an updated technology base from which an advanced supersonic cruise aircraft can be produced with a high probability of success. An assessment of the gains available through the application of advanced technologies in aerodynamics, propulsion, acoustics, structures, materials, and active controls is developed. The potential market and range requirements as well as economic factors including payload, speed, airline operating costs, and...
Topics: BOUNDARY LAYERS, MULTISPECTRAL BAND SCANNERS, OCEAN CURRENTS, EREP, INFRARED RADIATION, SKYLAB...
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Jun 2, 2011
06/11
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Chen, Yuan; Guertin, Steven M.; Petkov, Mihail; Nguyen, Duc N.; Novak, Fran
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This paper presents a qualification methodology on imaging sensors. In addition to overall chip reliability characterization based on sensor s overall figure of merit, such as Dark Rate, Linearity, Dark Current Non-Uniformity, Fixed Pattern Noise and Photon Response Non-Uniformity, a simulation technique is proposed and used to project pixel reliability. The projected pixel reliability is directly related to imaging quality and provides additional sensor reliability information and performance...
Topics: REMOTE SENSORS, CHARACTERIZATION, CCD CAMERAS, MULTISPECTRAL BAND SCANNERS, INFRARED IMAGERY, SPACE...
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157
Jun 21, 2010
06/10
by
Lapitskiy, A. V., et al
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eye 157
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Thermodynamic constants of alkali metaniobates and metatantalates
Topics: DATA SYSTEMS, MULTISPECTRAL BAND SCANNERS, SPECTRAL SIGNATURES, ANALOG COMPUTERS, COMPUTER...
241
241
Jul 11, 2010
07/10
by
ROMANOV, V. Y
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EXPERIMENTS WERE PERFORMED TO DETERMINE WHETHER THE VARIOUS CHARACTERISTICS OF THE VISUAL PROCESS ARE REFLECTED IN FIXATION OPTOKINETIC NYSTAGMUS (FOKN). SUBJECTS WERE TO SOLVE VARIOUS CLASSICAL VISUAL PERSPECTIVE PROBLEMS WHILE THEIR FOKN WERE RECORDED. INVESTIGATIONS SHOW THAT FOKN IS AN INDICATOR OF THE TONIC SYSTEM OF THE EYES, AND EXPLAINS PROPERTIES AND FORMS OF VISUAL ACTIVITY. IT WAS FOUND THAT THIS TYPE OF EYE MICROMOVEMENT DEPENDS ON THE DIRECTIONAL EFFECT OF THE SUBJECT'S ACTIVITY,...
Topics: ATMOSPHERIC EFFECTS, MULTISPECTRAL BAND SCANNERS, REFLECTANCE, VISIBILITY, DATA PROCESSING, EREP,...
468
468
Jul 6, 2010
07/10
by
CORRIOL, J.; ROHNER, J. J
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eye 468
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THE ROLE IS INVESTIGATED OF VARIATIONS IN WATER TEMPERATURE UPON BRADYCARDIA, OR STIMULUS-INDUCED CARDIAC DECELERATION. THIS PHENOMENON OCCURS AS A REFLEX WHEN THE HUMAN FACE IS IMMERSED IN WATER. USING TWELVE TEST SUBJECTS, THE AUTHORS CARRY OUT FACIAL IMMERSIONS AT VARIOUS WATER TEMPERATURES, ACCOMPANIED BY ACCURATE ELECTROCARDIOGRAPHIC MEASUREMENT. THROUGH STATISTICAL ANALYSIS, THE EFFECT OF WATER TEMPERATURE VARIATIONS UPON THE BRADYCARDIA REFLEX IS DEMONSTRATED. THE NATURE OF THE CUTANEOUS...
Topics: CALIFORNIA, FORESTS, TIMBER INVENTORY, DIGITAL SYSTEMS, EREP, MULTISPECTRAL BAND CAMERAS,...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), CONIFERS, MULTISPECTRAL BAND SCANNERS, SAN JUAN MOUNTAINS...
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Jun 2, 2011
06/11
by
Vann, Tim
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eye 323
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NASA's systems engineering has its heritage in space mission analysis and design, including the end-to-end approach to managing every facet of the extreme engineering required for successful space missions. NASA sensor technology, understanding of remote sensing, and knowledge of Earth system science, can be powerful new tools for improved disease surveillance and environmental public health tracking. NASA's systems engineering framework facilitates the match between facilitates the match...
Topics: RADIOMETERS, CHARACTERIZATION, MULTISPECTRAL BAND SCANNERS, SATELLITE IMAGERY, REMOTE SENSING,...
The program consisted of measuring the performance characteristics of charge coupled linear imaging devices, and a study defining a multispectral imaging system employing advanced solid state photodetection techniques.
Topics: NASA Technical Reports Server (NTRS), HIGH RESOLUTION, IMAGING TECHNIQUES, SOLID STATE DEVICES,...
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263
Jul 11, 2010
07/10
by
Ashby, G. C., Jr
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eye 263
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A testing technique for obtaining the static aerodynamic characteristics of twin-fuselage configurations at hypersonic speeds by using a conventional single-balance installation has been evaluated. Data from a triple-fuselage model and a single-fuselage model were summed and then halved to obtain the characteristics for a twin-fuselage model of the same scale. The three related models were evaluated experimentally at Mach 20.3 in helium and Mach 6 in air for an angle-of-attack range from minus...
Topics: COLORADO, ROCKS, SKYLAB PROGRAM, FORESTS, MOUNTAINS, MULTISPECTRAL PHOTOGRAPHY, SNOW COVER,...
A method for detecting surface water using ERTS-1 multispectral scanner digital data is described. The several computer programs for processing multispectral data are described, along with the manner in which these programs were used. The use of the LARSAA program to test and demonstrate the discriminant function is explained. The discriminant function itself was later implemented in an operational program which performs only those specific operations necessary to test each data point for an...
Topics: NASA Technical Reports Server (NTRS), LANDSAT 1, SURFACE WATER, COMPUTER PROGRAMS, DIGITAL SYSTEMS,...
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472
Jul 11, 2010
07/10
by
Dunphy, P. P
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Observations of the 0.511 MeV positron annihilation, gamma ray on the OSO-7 satellite are presented. Variables which affect the counting rate are discussed. An upper limit flux of .0076 photons/sq cm/sec is obtained for the quiet sun and a positive solar flux of .063( or - .0002) photons/sq cm/sec is obtained for the 3B flare of 4 August 1972. The width of this annihilation line gives an upper limit temperature for the annihilation region of approximately 6 million K. An analysis of the line...
Topics: MULTISPECTRAL BAND SCANNERS, REMOTE SENSORS, SIGNAL TO NOISE RATIOS, CALIBRATING, DATA ACQUISITION,...
This document is Volume 2 of three volumes of the Final Report for the four band Multispectral Scanner System (MSS). The results are contained of an analysis of pictures of actual outdoor scenes imaged by the engineering model MSS for spectral response, resolution, noise, and video correction. Also included are the results of engineering tests on the MSS for reflectance and saturation from clouds. Finally, two panoramic pictures of Yosemite National Park are provided.
Topics: NASA Technical Reports Server (NTRS), LANDSAT SATELLITES, MULTISPECTRAL BAND SCANNERS, IMAGING...
The author has identified the following significant results. Scientific results may be summarized as follows: (1) A geodetic (UTM) grid can be fitted to MSS bulk images with a positional accuracy in the order of 50 meters (rms). (2) The MSS imagery as corrected and printed in bulk form is in effect or a defined map projection. This projection, if optimized for cartographic presentation, will have distortions in the order of only 1 part in 10,000. (3) The orbit of ERTS-1 and image delineation of...
Topics: NASA Technical Reports Server (NTRS), EARTH RESOURCES PROGRAM, MULTISPECTRAL BAND SCANNERS,...
459
459
Jul 6, 2010
07/10
by
Kreisman, W. S.; Torney, F. L.; Roehrig, J. R
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The design, development, and testing of a wide mass range residual gas analyzer which will be one component of an integrated real time contamination monitor system are described. The instrument has been developed and tested to the laboratory prototype phase, demonstrating the performance that can be expected from a flight instrument of similar design. The instrument's analyzer is of the quadrupole type and a cold cathode ion source is employed as the ionizer. The associated electronics supply...
Topics: COASTAL ECOLOGY, VEGETATION, DELAWARE, GEOLOGY, IMAGERY, OCEANOGRAPHY, RESOURCES MANAGEMENT, EARTH...
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Jul 11, 2010
07/10
by
YUDIN, I
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eye 303
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CERTAIN PUZZLING PROBLEMS OF COMETS ARE DISCUSSED, AS WELL AS THE POSSIBILITIES OF MANNED AND UNMANNED SPACE FLIGHTS DESIGNED TO SOLVE THESE PROBLEMS BY DIRECT OBSERVATION AND TESTING. TWO HYPOTHESES ON THE ORIGIN OF COMETS ARE PRESENTED. THE CHARACTERISTICS OF THE COMET KOHOUTEK ARE ANALYZED.
Topics: DATA REDUCTION, LAND USE, LANDSAT SATELLITES, SATELLITE-BORNE PHOTOGRAPHY, AERIAL PHOTOGRAPHY,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), DEACTIVATION, LANDSAT 1, MALFUNCTIONS, LONGITUDINAL CONTROL,...
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209
Jul 11, 2010
07/10
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Baxa, E. G., Jr.; Scharf, L. L.; Ruedger, W. H.; Modi, J. A.; Wheelock, S. L.; Davis, C. M
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The general aviation air traffic flow patterns at uncontrolled airports are investigated and analyzed and traffic pattern concepts are developed to minimize the midair collision hazard in uncontrolled airspace. An analytical approach to evaluate midair collision hazard probability as a function of traffic densities is established which is basically independent of path structure. Two methods of generating space-time interrelationships between terminal area aircraft are presented; one is a...
Topics: DATA PROCESSING, LANDSAT 2, POSTFLIGHT ANALYSIS, TELEMETRY, EARTH RESOURCES PROGRAM, MULTISPECTRAL...
The corn blight problem is briefly described how the experiment was organized and conducted, the effect of the blight on the 1971 crop, and some conclusions that may be drawn as a result of the experiment. The information is based on preliminary reports of the Corn Blight Watch Steering Committee and incorporates much illustrative material conceived at Purdue University.
Topics: NASA Technical Reports Server (NTRS), BLIGHT, CORN, MULTISPECTRAL PHOTOGRAPHY, PHOTOINTERPRETATION,...
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249
Jul 10, 2010
07/10
by
CORDELLE, J
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A PROCESS IS DESCRIBED WHICH PRODUCES A GRATING ON A SUBSTRATE 150 X 150 MM IN AREA IN TWENTY MINUTES. A SUPPORT MADE OF GLASS OR ANY OTHER OPTICALLY POLISHED MATERIAL IS COATED WITH A LAYER OF PHOTOPOLYMERIZABLE RESIN WHICH RECORDS THE INTERFERENCE PHENOMENON PRODUCED BY TWO COHERENT POINT SOURCES DEFINED BY A LASER. THE RESIN POLYMERIZES ALONG THE BRIGHT FRINGES AND CAN THEN BE DISSOLVED IN A SUITABLE DEVELOPER. AFTER RINSING AND DRYING, A DIFFRACTION GRATING IS OBTAINED WHICH CAN BE...
Topics: IMAGING TECHNIQUES, JUPITER PROBES, MISSION PLANNING, MULTISPECTRAL BAND SCANNERS,...
A bibliography of scientific papers, articles, and books based on research supported by the NASA Geology Program is given. The citations cover the period 1980 to 1990. An author index is included.
Topics: NASA Technical Reports Server (NTRS), GEOBOTANY, GEOCHEMISTRY, GEOMORPHOLOGY, LITHOLOGY, REMOTE...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), FISHES, MARINE RESOURCES, EREP, MULTISPECTRAL BAND SCANNERS,...
Agricultural and forestry programs, using various remote sensing techniques - conference
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, CONFERENCES, FORESTS, REMOTE SENSORS, BLIGHT,...
A method is presented that can be used to calculate approximate Munsell coordinates of the colors produced by making a color composite from three registered images. Applied to the LANDSAT MSS data of the Goldfield, Nevada, area, this method permits precise and quantitative definition of the limonitic areas originally observed in a LANDSAT color ratio composite. In addition, areas of transported limonite can be discriminated from the limonite in the hydrothermally altered areas of the Goldfield...
Topics: NASA Technical Reports Server (NTRS), COLOR PHOTOGRAPHY, DIGITAL DATA, NEVADA, LANDSAT SATELLITES,...
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Jul 11, 2010
07/10
by
Polcyn, F. C.; Lyzenga, D. R
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Two test sites of different water quality and bottom topography were used to test for maximum water depth penetration using the Skylab S-192 MSS for measurement of nearshore coastal bathymetry. Sites under investigation lie along the Lake Michigan coastline where littoral transport acts to erode sand bluffs and endangers developments along 1,200 miles of shore, and on the west coast of Puerto Rico where unreliable shoal location and depth information constitutes a safety hazard to navigation....
Topics: AFRICA, MAPPING, SPACEBORNE PHOTOGRAPHY, DATA PROCESSING, EARTH RESOURCES PROGRAM, MULTISPECTRAL...
The FOCUS series is a collection of two-page foldout documents each consisting of a diagram or photograph and an extended option of three to four hundred words. The series was developed to present basic remote sensing concepts in a simple, concise way. Issues currently available are collected in this information note.
Topics: NASA Technical Reports Server (NTRS), EDUCATION, IMAGERY, REMOTE SENSORS, LANDSAT SATELLITES,...
A data analysis and management procedure currently being used at Marshall Space Flight Center to analyze ERTS digital data is described. The objective is to acquaint potential users with the various computer programs that are available for analysis of multispectral digital imagery and to show how these programs are used in the overall data management plan. The report contains a brief description of each computer routine, and references are provided for obtaining more detailed information.
Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMMING, EARTH RESOURCES PROGRAM, MULTISPECTRAL...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), DATA PROCESSING, MULTISPECTRAL BAND SCANNERS,...
Aircraft and satellite remote sensing systems which are capable of contributing to watershed management are described and include: the multispectral scanner subsystem on LANDSAT and the basic multispectral camera array flown on high altitude aircraft such as the U-2. Various aspects of watershed management investigated by remote sensing systems are discussed. Major areas included are: snow mapping, surface water inventories, flood management, hydrologic land use monitoring, and watershed...
Topics: NASA Technical Reports Server (NTRS), MANAGEMENT METHODS, REMOTE SENSORS, WATERSHEDS, AERIAL...
466
466
Jul 6, 2010
07/10
by
CHEBAN, A. G.; NEGRESKUL, V. V.; OUSH, P. T.; GORCHAK, L. V.; UNGURYANU, G. I.; SMIRNOV, V. G
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MEASURED DARK CURRENT-VOLTAGE CHARACTERISTICS, LIGHT CURRENT-VOLTAGE CHARACTERISTICS UNDER LOAD, AND SPECTRAL RESPONSE CURVES ARE GIVEN FOR PHOTOSENSITIVE ELEMENTS PREPARED BY LIQUID EPITAXIAL GROWTH OF P-TYPE GAAS SUB 1-X P SUB X ON AN N-TYPE GAAS SUBSTRATE. DUE TO THE ABSENCE OF A CONDITIONING SURFACE LAYER, 30% OF THE RADIATION INCIDENT ON THE WORKING SURFACE IS REFLECTED, YIELDING AN EFFICIENCY OF 6 TO 7%. RECOMMENDATIONS ARE GIVEN FOR IMPROVEMENT IN THIS AREA.
Topics: ICE REPORTING, INFRARED IMAGERY, LANDSAT 1, MULTISPECTRAL BAND SCANNERS, CANADA, ICE FORMATION, ICE...
SRI satellite image analyzer console for mapping southern Arizona plant communities from ERTS-1 imagery
Topics: NASA Technical Reports Server (NTRS), ARIZONA, IMAGERY, PLANTS (BOTANY), EARTH RESOURCES PROGRAM,...
The multispectral scanner onboard ERTS-A spacecraft provides simultaneous images in three visible bands and one near infrared band. The instrument employs fiber optics to transfer optical images to the detectors and photomultiplier tubes. Detector outputs are digitized and multiplexed for transmission from the spacecraft by analog to digital processor.
Topics: NASA Technical Reports Server (NTRS), LANDSAT 1, MULTISPECTRAL BAND SCANNERS, REMOTE SENSORS,...
A scanning radiometer to be used for measuring cloud radiances in each of three spectral regions is described. Significant features incorporated in the Cloud Top Scanner design are: (1) flexibility and growth potential through use of easily replaceable modular detectors and filters; (2) full aperture, multilevel inflight calibration; (3) inherent channel registration through employment of a single shared field stop; and (4) radiometric sensitivity margin in a compact optical design through use...
Topics: NASA Technical Reports Server (NTRS), CLOUDS (METEOROLOGY), DESIGN ANALYSIS, MULTISPECTRAL BAND...
S-type and p-type pahoehoe record different mechanisms and vigors of activity within an active flow field. There is some controversy about what these mechanisms are exactly, and this study was undertaken with the idea that an accurate map of the two surfaces within a pahoehoe flow field could be helpful in solving the problem. Thermal Infrared Multispectral Scanner (TIMS) allows discrimination between s-type and p-type pahoehoe, and this ability was used to map the two surface types on the...
Topics: NASA Technical Reports Server (NTRS), FLOW DISTRIBUTION, LAVA, PLANETARY MAPPING, INFRARED...
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Jul 11, 2010
07/10
by
Gardner, J. L.; Samson, J. A. R
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Discrete vibrational structure has been observed in the photo-electron spectrum of oxygen at an ionization potential of 40.33 eV. Two levels, attributed to the 02() 2 sigma g- final state, have been detected with a vibrational spacing of 0.071 eV.
Topics: HYDROLOGY, VEGETATION, WATER CURRENTS, INTERNATIONAL COOPERATION, LAKE ONTARIO, MULTISPECTRAL...
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Jul 11, 2010
07/10
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Moore, R. K.; Spring, W.; Greenwood, C; Fung, A. K.; Young, J. D.; Claassen, J. P.; Chan, H. L.; Afarani, M.; Pierson, W. J.; Cardone, V. J.; Hayes, J.
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The S-193 Radscat made extensive measurements of many sea conditions. Measurements were taken in a tropical hurricane (Ava), a tropical storm (Christine), and in portions of extratropical cyclones. Approximately 200 scans of ocean data at 105 kilometer spacings were taken during the first two Skylab missions and another 200 during the final mission when the characteristics of the measurements changed due to damage of the antenna. Backscatter with four transmit/receive polarization combinations...
Topics: EARTH RESOURCES PROGRAM, URBAN PLANNING, EREP, FLORIDA, LAND USE, SKYLAB PROGRAM, IMAGERY, MAPPING,...
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278
Jul 11, 2010
07/10
by
Bayliss, A
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eye 278
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The theory of Massera and Schaeffer relating the existence of unique almost periodic solutions of an inhomogeneous linear equation to an exponential dichotomy for the homogeneous equation was completely extended to discretizations by a strongly stable difference scheme. In addition it is shown that the almost periodic sequence solution will converge to the differential equation solution. The preceding theory was applied to a class of exponentially stable partial differential equations to which...
Topics: GEOLOGICAL SURVEYS, SKYLAB PROGRAM, TABLES (DATA), MAPPING, MINERAL DEPOSITS, ROCKS, SILICATES,...
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Jul 11, 2010
07/10
by
BELOTSERKOVSKIY, S. M.; KOCHETKOV, Y. A.; TOMSHIN, V. K
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A NUMERICAL METHOD AND AN APPROXIMATE METHOD BASED ON THE APPROXIMATION OF TRANSIENT AERODYNAMIC FUNCTIONS BY EXPONENTIAL CURVES ARE PROPOSED FOR THE SOLUTION OF THE INTEGRODIFFERENTIAL EQUATIONS TO WHICH SOME DYNAMICS PROBLEMS REDUCE. THE APPROXIMATE METHOD LEADS TO SYSTEMS OF ORDINARY DIFFERENTIAL EQUATIONS WITH CONSTANT COEFFICIENTS. THE METHODS ARE APPLIED TO SOLVING THREE PROBLEMS IN FLIGHT DYNAMICS. SOLUTIONS OF EXACT EQUATIONS ARE ANALYZED.
Topics: CALIFORNIA, FOREST MANAGEMENT, REMOTE SENSORS, RESOURCES MANAGEMENT, WATER RESOURCES, COST...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), BIRDS, HABITATS, MIGRATION, WILDLIFE, EREP, MULTISPECTRAL...
Optimum channel selection among 12 channels of multispectral scanner imagery identified six as providing the best information about 11 vegetation classes and two nonvegetation classes at the Manitou Experimental Forest. Intensive preprocessing of the scanner signals was required to eliminate a serious scan angle effect. Final processing of the normalized data provided acceptable recognition results of generalized plant community types. Serious errors occurred with attempts to classify specific...
Topics: NASA Technical Reports Server (NTRS), COLORADO, GRASSLANDS, MULTISPECTRAL BAND SCANNERS, PATTERN...
The need for multispectral data processing methods to permit the estimation of proportions of objects and materials appearing within the instantaneous field of view of a scanning system is discussed. An algorithm developed for proportion estimation is described as well as other supporting processing techniques. Application of this algorithm to space-simulated multispectral scanner data is discussed and some results presented and compared. Results indicate that, for this data set, the true...
Topics: NASA Technical Reports Server (NTRS), MULTISPECTRAL BAND SCANNERS, REMOTE SENSORS, ALGORITHMS, CROP...
There is a need for a simple theoretical approach to the calculation of sunlight penetration depths suitable for passive multispectral remote sensing of water resources. An earlier paper presented an approach which is readily adapted to this calculation and which provides reasonably good agreement with more accurate but time-consuming radiative transfer models. The needed modifications are described and the model is used to calculate the penetration of sunlight into clear ocean water at several...
Topics: NASA Technical Reports Server (NTRS), MULTISPECTRAL BAND SCANNERS, SEA WATER, SUNLIGHT, LANDSAT 1,...
Multilayered mercury-cadmium telluride photoconductive detectors were developed which are capable of providing individual coverage of three separate spectral wavelength bands without the use of beam splitters. The multilayered "three-color" detector on a single dewar takes the place of three separate detector/filter/dewar units and enables simpler and more reliable mechanical and optical designs for multispectral scanners and radiometers. Wavelength channel design goals (in...
Topics: NASA Technical Reports Server (NTRS), INFRARED DETECTORS, LAMINATES, MERCURY TELLURIDES, MERCURY...
Photogrammetric control generation is discussed. Techniques in remote sensing data reduction are described. Emphasis is placed on methods of rectification of aerial photography and frame photography. Examples of multispectral band scanner data that were processed are presented.
Topics: NASA Technical Reports Server (NTRS), DATA REDUCTION, MAPPING, PHOTOGRAMMETRY, AERIAL PHOTOGRAPHY,...
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The author has identified the following significant results. A reconstituted color infrared image covering the western Seward Peninsula was used for identifying vegetation types by simple visual examination. The image was taken by ERTS-1 approximately 1120 hours on August 1, 1972. Seven major colors were identified. Four of these were matched with four units on existing vegetation maps: bright red - shrub thicket; light gray-red - upland tundra; medium gray-red - coastal wet tundra; gray -...
Topics: ABSORPTION SPECTRA, STRUCTURAL PROPERTIES (GEOLOGY), CALIFORNIA, IRON ORES, NEVADA, SPECTRUM...
