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  • Other Sources  (10,347)
  • EARTH RESOURCES AND REMOTE SENSING  (10,347)
  • 1
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    The LANDSAT Tutorial Workbook: Basics of Satellite Remote Sensing (1982)
    In:  CASI
    Details
    Publication Date: 2019-11-23
    Description: Most of the subject matter of a full training course in applying remote sensing is presented in a self-teaching mode in this how-to manual which combines a review of basics, a survey of systems, and a treatment of the principles and mechanics of image analysis by computers, with a laboratory approach for learning to utilize the data through practical experiences. All relevant image products are included.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-RP-1078 , NAS 1.61:1078 , E83-10001 , LC-81-600117
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    The Use of High Spectral Resolution Bands for Estimating Absorbed Photosynthetically Active Radiation (A Par) (1994)
    In:  CASI
    Details
    Publication Date: 2019-11-07
    Description: Most remote sensing estimations of vegetation variables such as Leaf Area Index (LAI), Absorbed Photosynthetically Active Radiation (APAR), and phytomass are made using broad band sensors with a bandwidth of approximately 100 nm. However, high resolution spectrometers are available and have not been fully exploited for the purpose of improving estimates of vegetation variables. A study directed to investigate the use of high spectral resolution spectroscopy for remote sensing estimates of APAR in vegetation canopies in the presence of nonphotosynthetic background materials such as soil and leaf litter is presented. A high spectral resolution method defined as the Chlorophyll Absorption Ratio Index (CARI) was developed for minimizing the effects of nonphotosynthetic materials in the remote estimates of APAR. CARI utilizes three bands at 550, 670, and 700 nm with bandwidth of 10 nm. Simulated canopy reflectance of a range of LAI were generated with the SAIL model using measurements of 42 different soil types as canopy background. CARI obtained from the simulated canopy reflectance was compared with the broad band vegetation indices (Normalized Difference Vegetation Index (NDVI), Soil Adjusted Vegetation Index (SAVI), and Simple Ratio (SR)). CARI reduced the effect of nonphotosynthetic background materials in the assessment of vegetation canopy APAR more effectively than broad band vegetation indices.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: GSFC-E-DAA-TN72921 , CNES, Proceedings of 6th International Symposium on Physical Measurements and Signatures in Remote Sensing; p 299-306
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    NASA TECHNICAL REPORTS
  • 3
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    The Tropical Rainfall Measuring Mission (TRMM) (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The Tropical Rainfall Measuring Mission (TRMM) is a cooperative effort between National Space Development Agency (NASDA) of Japan and NASA of the USA. TRMM is designed to measure rain rates from space using a combination of high resolution radar, passive microwave radiometer and visible-infrared radiometer measurements from a spacecraft in a rapid precession, 350 km orbit inclined at 35 deg. These measurements, averaged over a 500 km grid for a month, are expected to provide monthly mean rainfall to an accuracy of 10 to 15 percent. TRMM will also make it possible to analyze the diurnal component of the rainfall and to derive the vertical distribution of latent heating. An accurate measure of the oceanic rainfall distribution will provide unprecedented insight into the halocline distribution and the stability of the oceanic surface layers. A status of the program is presented.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Advances in Space Research (ISSN 0273-1177); 14; 3; p. (3)159-(3)165
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    NASA to Use Telepresence to Explore Antarctic Lakes (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Scenes of Antarctic lakes using telepresence are contained in this video. Dr. Carol Stroker, a scientist from Ames Research Center, explains how images from a camera on a remote vehicle are projected directly into your eyes so that your entire field of view is filled with the information from these images. She also states that Virtual Reality would help to expand the range of access we have to Mars and would allow robots to do scientific work.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-TM-110567 , AAV-1427 , NONP-NASA-VT-95-46002
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  • 5
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    Looking at Earth from space: Direct readout from environmental satellites (1994)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Direct readout is the capability to acquire information directly from meteorological satellites. Data can be acquired from NASA-developed, National Oceanic and Atmospheric Administration (NOAA)-operated satellites, as well as from other nations' meteorological satellites. By setting up a personal computer-based ground (Earth) station to receive satellite signals, direct readout may be obtained. The electronic satellite signals are displayed as images on the computer screen. The images can display gradients of the Earth's topography and temperature, cloud formations, the flow and direction of winds and water currents, the formation of hurricanes, the occurrence of an eclipse, and a view of Earth's geography. Both visible and infrared images can be obtained. This booklet introduces the satellite systems, ground station configuration, and computer requirements involved in direct readout. Also included are lists of associated resources and vendors.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-EP-300 , NAS 1.19:300
    Format: application/pdf
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  • 6
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    Testing the Waters from Space (1986)
    In:  Other Sources
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    Publication Date: 2019-08-28
    Description: It is explained how an infrared radiometer can accurately measure ocean surface temperature.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ASR-242 , NASA-TM-109623 , NONP-NASA-VT-93-190421
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    NASA TECHNICAL REPORTS
  • 7
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    Views from Space (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: This video shows how views from the shuttle provide valuable information as to the condition of earth.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ASR-252 , NASA-TM-109634 , NONP-NASA-VT-93-190432
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  • 8
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    Looking at Earth from space (1994)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: This vendor equipment list was developed with NASA funding by the Dallas Remote Imaging Group (DRIG) and the Maryland Pilot Earth Science and Technology Education Network (MAPS-NET) project as a reference guide to low-cost ground station equipment for direct readout, the capability to acquire information directly from environmental satellites. Products were tested with the following standards in mind: ease of use; user friendliness and completeness of manual and instructions; total system cost for computer, geostationary operational environmental satellites (GOES), and automatic picture transmission (APT) capability under $4000; and vendor stability in the industry.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-EP-301 , NAS 1.19:301
    Format: application/pdf
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  • 9
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    The use of a vegetation index for assessment of the urban heat island effect (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: A vegetation index and radiative surface temperature were derived from NOAA-11 Advanced Very High Resolution Radiometer (AVHRR) data for the Seattle, WA region from 28 June through 4 July 1991. The vegetation index and surface temperature values were computed for locations of weather observation stations within the region and compared to observed minimum air temperatures. These comparisons were used to evaluate the use of AVHRR data to assess the influence of the urban environment on observed minimum air temperatures (the urban heat island effect). AVHRR derived normalized difference vegetation index (NDVI) and radiant surface temperature data from a one week composite product were both related significantly to observed minimum temperatures, however, the vegetation index accounted for a greater amount of the spatial variation observed in mean minimum temperatures. The difference in the NDVI between urban and rural regions appears to be an indicator of the difference in surface properties (i.e., evaporation and heat storage capacity) between the two environments that are responsible for differences in urban and rural minimum temperatures.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Journal of Remote Sensing (ISSN 0143-1161); 14; 11; p. 2223-2230.
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  • 10
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    A remote sensing research agenda for mapping and monitoring biodiversity (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: A remote sensing research agenda designed to expand the knowledge of the spatial distribution of species richness and its ecological determinants and to predict its response to global change is proposed. Emphasis is placed on current methods of mapping species richness of both plants and animals, hypotheses concerning the biophysical factors believed to determine patterns of species richness, and anthropogenic processes causing the accelerating rate of extinctions. It is concluded that biodiversity should be incorporated more prominently into the global change and earth system science paradigms.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Journal of Remote Sensing (ISSN 0143-1161); 14; 10; p. 1839-1860.
    Format: text
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