The proposed research is to use the DOE ARM ground-based measurements and retrievals as the ground-truth references for validating satellite cloud results and retrieving algorithms. This validation effort includes four different ways: (1) cloud properties on different satellites, therefore different sensors, TRMM VIRS and TERRA MODIS; (2) cloud properties at different climatic regions, such as DOE ARM SGP, NSA, and TWP sites; (3) different cloud types, low and high level cloud properties; and...
Topics: NASA Technical Reports Server (NTRS), ALGORITHMS, CLOUD PHYSICS, GROUND TRUTH, CLIMATOLOGY, ERRORS,...
An S191 performance summary based on ground testing and orbital operations in terms of pertinent parameters is provided. Additional tasks covering S191 short-wavelength radiometric calibration, data-acquisition camera, and viewfinder tracking system design criteria, radiometric comparison of S190A, S191, and S192, and wavelength calibration data are included as supplemental analyses. Descriptions of techniques employed in the performance analyses are also discussed. Final results of the...
Topics: NASA Technical Reports Server (NTRS), EREP, REMOTE SENSORS, SKYLAB PROGRAM, CALIBRATING, GROUND...
537
537
Jul 11, 2010
07/10
by
Carl, J. G
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Findings and data products developed during crew specification study for inflight maintenance and stowage functions are reported. From this information base, a family of data concepts to support crew inflight troubleshooting and corrective maintenance activities was developed and specified. Recommendations are made for the improvement of inflight maintenance planning, preparations and operations in future space flight programs through the establishment of an inflight maintenance organization...
Topics: AERIAL PHOTOGRAPHY, MAPPING, PHOTOINTERPRETATION, SKYLAB PROGRAM, COLORADO PLATEAU (US), FARMLANDS,...
200
200
May 30, 2011
05/11
by
McAlister, K. W.; Tung, C.; Sharpe, D. L.; Huang, S.; Hendley, E. M
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Within a program designed to develop experimental techniques for measuring the trajectory and structure of vortices trailing from the tips of rotor blades, the present preliminary study focuses on a method for quantifying the trajectory of the trailing vortex during descent flight conditions. This study also presents rotor loads and blade surface pressures for a range of tip-path plane angles and Mach numbers. Blade pressures near the leading edge and along the outer radius are compared with...
Topics: ECOSYSTEMS, STATE VECTORS, RESILIENCE, REMOTE REGIONS, GROUND TRUTH, CLIMATE CHANGE, ANTHROPOLOGY,...
Soil samples were taken in the field and carefully preserved in taped metal containers for later laboratory gravimetric analysis to determine soil-moisture content. The typical sampling pattern used in this mission is illustrated, and the soil types encountered on the soil-moisture lines are summarized. The actual soil-moisture data were tabulated by range, township and section. Soil-moisture data obtained in fields of winter wheat and spring wheat are briefly summarized.
Topics: NASA Technical Reports Server (NTRS), SOIL MOISTURE, SOUTH DAKOTA, FARMLANDS, GRAVIMETRY, GROUND...
A method, apparatus and article of manufacture provide ionospheric ground-truth measurements for use in a wide-area augmentation system (WAAS). Ionospheric pseudorange/code and carrier phase data as primary observables is received by a WAAS receiver. A polynomial fit is performed on the phase data that is examined to identify any cycle slips in the phase data. The phase data is then leveled. Satellite and receiver biases are obtained and applied to the leveled phase data to obtain unbiased...
Topics: NASA Technical Reports Server (NTRS), AUGMENTATION, GROUND TRUTH, IONOSPHERES, PATENTS, Komjathy,...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), LAKES, PLAYAS, TEXAS, EARTH RESOURCES PROGRAM, GROUND TRUTH,...
Programs are described which permit classification runs with the LARSYS software to be made on images which have the ground truth field boundaries removed.
Topics: NASA Technical Reports Server (NTRS), COMPUTER PROGRAMS, GROUND TRUTH, IMAGE PROCESSING,...
The effort involved three elements all related to the measurement of rain and clouds using microwaves: (1) Examine recently proposed techniques for measuring rainfall rate and rain water content using data from ground-based radars and the TRMM microwave link in order to develop improved ground validation and radar calibration techniques; (2) Develop dual-polarization, multiple frequency radar techniques for estimating rain water content and cloud water content to interpret the vertical profiles...
Topics: NASA Technical Reports Server (NTRS), METEOROLOGICAL RADAR, MICROWAVES, GROUND TRUTH, RAIN,...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), COASTAL WATER, FISHES, FLORIDA, EREP, GROUND TRUTH, SEA...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), KANSAS, SOIL MOISTURE, TEXAS, VEGETATION, CLIMATOLOGY, EREP,...
The SAGE mission is discussed along with the role of the Nimbus 7 experiment. Other topics discussed include: ground truth measurements, data collection and processing, SAGE instrumentation, and launch sequence.
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, APPLICATIONS EXPLORER SATELLITES, STRATOSPHERE,...
We identify two catagories of probe-orbiter interactions which benefit the science return from a particular mission. The first category is termed "Mission Design Aspects". This category is meant to describe those aspects of the mission design involving the orbiter that affect the science return from the probe(s). The second category of probe-orbiter interaction is termed "Orbiter-Probe Science Interactions", and is meant to include interactions between oribter and probe(s)...
Topics: NASA Technical Reports Server (NTRS), SPACE PROBES, ORBITS, REMOTE SENSING, ATMOSPHERIC...
294
294
Jul 12, 2010
07/10
by
Gough, D
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A discussion of some of the issues raised in connection with the seat of the solar cycle are presented. Is the cycle controlled by a strictly periodic oscillator that operates in the core, or is it a turbulent dynamo confined to the convection zone and possibly a thin boundary layer beneath it Sunspot statistics are discussed, with a view to ascertaining the length of the memory of the cycle, without drawing a definitive conclusion. Also discussed are some of the processes that might bring...
Topics: CALIBRATING, GROUND TRUTH, ROCKET FLIGHT, SATELLITE-BORNE INSTRUMENTS, SOLAR CONSTANT,...
The author has identified the following significant results. The vegetation structure of rice was investigated and interpreted in dynamic terms as a significant factor governing the distribution of solar energy thoughout the canopy and therefore conditions the final yield. Radiometric characteristics of rice culture were described for various stages of development in relation to the vegetation structure in an attempt to establish correlations between data of total biomass and of grain yield....
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, FORESTS, FRANCE, GROUND TRUTH, ITALY, RICE,...
The application of microwave radiometers for measuring Arctic ice is discussed. The acquisition of Arctic ice data simultaneously on the surface with conventional instruments and remotely with microwave and infrared radiometers, photography, and a laser geodolite is described. A multifrequency view of a large multilayer ice floe is presented. The significance of the data recordings is explained.
Topics: NASA Technical Reports Server (NTRS), AERIAL RECONNAISSANCE, GROUND TRUTH, ICE REPORTING, REMOTE...
Nowhere on Earth is warming faster than the Arctic. In northern Siberia, average temperatures have risen 3-5 deg F over the past 30 years, whereas the worldwide average increase in that time is 1 deg F. Betweeen July 28 and August 12, 2007, a small international team of remote sensing and forest ecosystem scientists from NASA and Russia's Academy of Science set off on a three-week scientific expedition through the heart of the remote, wild forests of Siberia. They traveled southward down the...
Topics: NASA Technical Reports Server (NTRS), ARCTIC REGIONS, SIBERIA, GLOBAL WARMING, PROVING, SATELLITE...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), DATA ACQUISITION, GROUND TRUTH, METEOROLOGICAL PARAMETERS,...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), DATA ACQUISITION, GROUND TRUTH, SOUTH DAKOTA, EREP, SKYLAB...
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18
movies
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A company believes it can help tackle America's growing gun crime problem by alerting police the moment shots are fired. Its technology, however, has become increasingly controversial.
Topics: shotspotter, fresno, michael, brendan max, chicago, michael williams, dfr, uk, glasgow, rome,...
Source: Antenna
The creation of an international network of ground validation (GV) sites that will support the Global Precipitation Measurement (GPM) Mission's international science programme will require detailed planning of mechanisms for exchanging technical information, GV data products, and scientific results. An important component of the planning will be the philosophical guide under which the network will grow and emerge as a successful element of the GPM Mission. This philosophical guide should be...
Topics: NASA Technical Reports Server (NTRS), GROUND TRUTH, POLICIES, PROTOCOL (COMPUTERS), CONFERENCES,...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), DAMS, ECOLOGY, ENVIRONMENTS, ILLINOIS, RESERVOIRS, EARTH...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), IMAGERY, LANDSAT 1, REGIONAL PLANNING, DATA ACQUISITION, DATA...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), ECOLOGY, ENVIRONMENT EFFECTS, FORESTS, GROUND TRUTH,...
The author has identified the following significant results. The main vegetation units of the lower Mekong basin and the land development conditions were mapped by interpretation of LANDSAT 1 data. By interpretation of various shades of gray on satellite images, it was possible to map the density of the vegetation cover. Study of seasonal variations makes it possible to distinguish between mainly deciduous forests. In the Mekong basin area, these are generally related to the vegetation cover...
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, FORESTS, GROUND TRUTH, HYDROLOGY, THAILAND,...
Significant findings during this report period are: (1) The feasibility of using techniques for obtaining and using atmospheric parameter to transform ERTS data into absolute target reflectance was demonstrated. (2) Ground-truth instrumentation must have a dynamic range of 100,000 for obtaining the full set of atmospheric parameters encountered in the field. (3) Atmospheric transmittance for January through May 1973 varied from 13 to 18 percent in the ERTS bands. (4) Energy scattered to the...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC ATTENUATION, LANDSAT SATELLITES, SIGNAL...
The amount and type of ground truth required for an altimeter experiment is a function of the uncertainty in the satellite orbit, the altimeter error budget and the type of operation being performed. Ground truth requirements will be discussed with reference to three areas of operation: the global mode, the high intensity mode and calibration.
Topics: NASA Technical Reports Server (NTRS), ALTIMETERS, ATMOSPHERIC ATTENUATION, PERFORMANCE TESTS,...
Field data collected in support of remote sensing projects are generally used for the following purposes: (1) calibration of remote sensing systems, (2) evaluation of experimental applications of remote sensing imagery on small test sites, and (3) designing and evaluating operational regional resource studies and inventories which are conducted using the remote sensing imagery obtained. Field data may be used to help develop a technique for a particular application, or to aid in the application...
Topics: NASA Technical Reports Server (NTRS), DATA ACQUISITION, GROUND TRUTH, REMOTE SENSORS, RESOURCES...
The author has identified the following significant results. Ground truth data collected in coastal areas confirm the sedimentation base line at five fathom depth and less. Forestry ground truth at Supati in Sunderbasn was found to conform with stratifications in aerial photos and in some satellite imagery.
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, BANGLADESH, FORESTS, GROUND TRUTH, SOILS, EARTH...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), ARIZONA, GROUND TRUTH, MONTANA, SOILS, VEGETATION, EARTH...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), FRANCE, GROUND TRUTH, IRRIGATION, RICE, TREES (PLANTS),...
There are no author-identified significant results in this report. Repeated coverage over the test site along the northwest coast of Africa showed that the structure of chlorophyll distribution is much more complicated than expected from continuous recordings. ERTS-1 data showed a very fast change in the chlorophyll distribution and it seems that also the concentration changes quickly. ERTS-1 showed on some frames offshore transportation of dust from the Sahara. All frames from Channel 7 will...
Topics: NASA Technical Reports Server (NTRS), AFRICA, CHLOROPHYLLS, DUST, PLANKTON, UPWELLING WATER,...
251
251
Jul 12, 2010
07/10
by
Knotts, L
texts
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The Peripheral Vision Display (PVD) which presents the pilot with a gyro stabilized artificial horizon projected onto his instrument panel by a laser light source is outlined. During instrument flight conditions, such a display allows the pilot to gain attitude awareness by sensing the horizon line through his peripheral vision. The pilot can detect changes to aircraft attitude without continuously referring back to his flight instruments. A second generation PVD unit was installed in the...
Topics: CRUSTAL FRACTURES, LANDSAT 1, SOLAR POSITION, NEW ENGLAND (US), PHOTOGEOLOGY, SATELLITE IMAGERY,...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), COASTS, ESTUARIES, GROUND TRUTH, LAND USE, VEGETATION,...
An automated ground facility, for vicarious radiometric calibration of airborne and spaceborne sensors of visible and infrared light has been established. In the term "vicarious calibration," "vicarious" is used in the sense of "in place of another," signifying "in place of laboratory calibration." Vicarious calibration involves the use of ground truth in the form of measurements by ground-viewing radiometers, a Sun-viewing photometer, and meteorological...
Topics: NASA Technical Reports Server (NTRS), CALIBRATING, RADIOMETERS, GROUND TRUTH, LIGHT EMITTING...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), ALTIMETERS, ARIZONA, COMPUTER PROGRAMMING, SIERRA NEVADA...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), CONSTRUCTION, ECOLOGY, FILLING, FORESTS, GROUND TRUTH,...
Ground-truth data taken at Steamboat Springs and Walden, Colorado in support of the NASA missions in these areas during the period March 8, 1976 through March 11, 1976 was presented. This includes the following information: snow course data for Steamboat Springs and Walden, snow pit and snow quality data for Steamboat Springs, and soil moisture report.
Topics: NASA Technical Reports Server (NTRS), COLORADO, GROUND TRUTH, SOIL MOISTURE, DATA BASES, NASA...
The author has identified the following significant results. The study on locating hill tribe villages from LANDSAT imagery was successful and exceeded the initial expectations. Results of the study on land use and forest mapping using Skylab data demonstrated the capability and feasibility of large scale mapping with high accuracy.
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, FORESTS, GROUND TRUTH, LAND USE, THAILAND, DATA...
422
422
Jun 2, 2011
06/11
by
Lee, Jeffrey; Lockwood, Denni
texts
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This document is a compendium of the WFF TOPEX Software Development Team's knowledge regarding Sensor Data Record (SDR) Processing. It includes many elements of a requirements document, a software specification document, a software design document, and a user's manual. In the more technical sections, this document assumes the reader is familiar with TOPEX and instrument files.
Topics: MULTISENSOR APPLICATIONS, PIXELS, GROUND TRUTH, RADIOMETERS, CORRELATION COEFFICIENTS, WAVELET...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), FORESTS, IMAGERY, LANDSAT 1, TIMBER INVENTORY, DATA...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, IMAGERY, MISSISSIPPI DELTA (LA), EARTH RESOURCES...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), CONSTRUCTION, ECOLOGY, ENVIRONMENT EFFECTS, GROUND TRUTH,...
The author has identified the following significant results. Water truth observations, NASA aerial photography from an altitude of 60,000 feet, and ERTS-1 imagery made off the South Texas coast showed a mutually consistent pattern of water turbidity in the Gulf of Mexico. At the time of the measurements, plumes of turbid water were being formed by ebb-tidal discharges from the bays through tidal passes and were being diverted southward by the coastwise drift. The occurrence of the bands of...
Topics: NASA Technical Reports Server (NTRS), GEOLOGY, GULF OF MEXICO, IMAGERY, TEXAS, EARTH RESOURCES...
During the current reporting period, the focus of our work was on preparing and testing an improved version of our Surface Radiation Budget algorithm for processing the ISCCP D1 data routinely at the SRB Satellite Data Analysis Center (SDAC) at NASA Langley Research Center. The major issues addressed are related to gap filling and to testing whether observations made from ERBE could be used to improve current procedures of converting narrowband observations, as available from ISCCP, into...
Topics: NASA Technical Reports Server (NTRS), SATELLITE OBSERVATION, EARTH RADIATION BUDGET, ALGORITHMS,...
Results of the data reduction and analysis for the Marine Navigation Systems Evaluation Experiment (MANSEE) are presented. Topics discussed include: the MANSEE test; the navigation sensors which were exercised; the ground truth instrumentation and the processing of ground truth data; and the residual statistics for individual navigation sensors. Residuals were calculated by differencing the actual measurements with anticipated measurements computed from the ground truth trajectory. The results...
Topics: NASA Technical Reports Server (NTRS), MARINE TRANSPORTATION, PERFORMANCE PREDICTION, SURFACE...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), ENVIRONMENT EFFECTS, GROUND TRUTH, STRIP MINING, EARTH...
It appears that the Large Area Crop Inventory Experiment over the Great Plains, can with a reasonable expectation, be a satisfactory component of a 90/90 production estimator. The area estimator produced more accurate area estimates for the total winter wheat region than for the mixed spring and winter wheat region of the northern Great Plains. The accuracy does appear to degrade somewhat in regions of marginal agriculture where there are small fields and abundant confusion crops. However, it...
Topics: NASA Technical Reports Server (NTRS), CROP GROWTH, GREAT PLAINS CORRIDOR (NORTH AMERICA), GROUND...
Varied small scale imagery was used for detecting and assessing damage by the southern pine beetle. The usefulness of ERTS scanner imagery for vegetation classification and pine beetle damage detection and assessment is evaluated. Ground truth acquisition for forest identification using multispectral aerial photographs is reviewed.
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, FORESTS, GROUND TRUTH, REMOTE SENSORS, EARTH...
There are no author-identified significant results in this report.
Topics: NASA Technical Reports Server (NTRS), AGRICULTURE, FORESTS, FRANCE, GROUND TRUTH, ITALY, RICE, DATA...
