... Accession Number : AD0700159. Title : CALIBRATION OF RADIOMETERS IN ABSOLUTE RADIATION UNITS,. Corporate ...

... Accession Number : AD0667289. Title : ABSOLUTE CALIBRATION OF REFERENCE HYDROPHONES IN THE AUDIO FREQUENCY RANGE,. ...

Note: The ISCCP BT data covering the period 1983 through June 2005 is now available by individual satellite in our ftp site. Additionally, the Absolute IR ...

An unbaked calibration system is described that permits absolute calibration with a piston manometer

This information about geologic time and the geologic time scale defines the terms relative time (chronostratic) and absolute time (chronometric). Relative time can be thought of as the physical subdivisions of rock found in the Earths stratigraphy and absolute as the measurements taken upon those to determine the actual time that has expired. ...

Of course, this does not necessarily mean that the absolute calibration of the LECS is perfect but such an excercise will add more data points to the ...

The TM multispectral scanner system was calibrated in an absolute manner before launch. To determine

... Abstract : NEW ELECTRICALLY CALIBRATED ABSOLUTE RADIOMETERS (ESRS) WERE DEVELOPED HAVING FAST RESPONSE AND HIGH ...

Absolute Flux Density Calibrations: Receiver Saturation Effects ... positive or negative measurement errors, with polarity depending upon operating ...

... Title : ABSOLUTE CALIBRATION OF AURORAL PHOTOMETERS AND GROUND-BASED MEASUREMENTS IN THE 3200-7500-ANGSTROMS ...

... for Absolute Measurements at the ... of a Lyman-alpha photometer on ... MAGNETOSPHERE, ULTRAVIOLET RADIATION), SCIENTIFIC SATELLITES ...

The paper describes the development of an absolute calibration standard for irradiance measurements.

Light source having absolute spectral energy distribution for standardizing star tracker calibration

As part of the ENVISAT RA-2 Cross-Calibration-Validation-Team (CCVT), we present our analysis on verification and calibration of the ENVISAT RA-2 altimeter. Absolute calibration analysis from the Marblehead, Ohio, Lake Erie, USA site, and from Noumea, New Caledonia, S. Pacific bottom tide ...

G.1 Files for Calibrating Absolute Photon Flux ... Table G.1 contains the names of these calibration files with a short comment of their contents. ...

Absolute GNSS Antenna Calibration with a Robot: Repeatability of Phase Variations,. Calibration of GLONASS and. Determination of Carrier-to-Noise Pattern ...

The knowledge of instrument biases of radar altimeter systems and their drift is an inherent and stringent requirement to use altimeters for measuring global sea level rise. The stringent requirement is know the relative biases between each system at the 1-cm level, and the drifts at <1 mm/yr level. The technology exists (e.g., the highly successful Harvest Platform ...

... Title : REMOTE AEROSOL SENSING WITH AN ABSOLUTE CALIBRATED DOUBLE FREQUENCY LIDAR, IN: AGARD-CP-183, PAPER 4. ...

The Climate Absolute Radiance and Refractivity Observatory (CLARREO) plans to observe climate change

The Advanced Very High Resolution Radiometer (AVHRR) record spans over 30 years and provides a unique opportunity for long-term climate studies. The precision of these climate studies is largely reliant on the consistent absolute calibration of the AVHRR visible data. Currently, AVHRR visible sensors lack onboard calibration and must ...

... STABILITY AND ERROR ANALYSIS ... 4. TITLE AND SUBTITLE Stability and Error Analysis for Absolutely Calibrated Geodetic GPS Receivers 5a. ...

... Title : Absolutely Calibrated Vacuum Ultraviolet Spectra in the 150 nm to 250 nm Range from Plasmas Generated by the NIKE KrF Laser. ...

An absolute calibration technique for a spontaneously fissioning nuclide (which involves no arbitrary parameters) allows unique determination of the detector efficiency for that nuclide, hence of the fission source strength.

Page 1. AFRL-VS-HA-TR-2004-1109 Absolute Infrared Calibration of Standard Stars by the Midcourse Space Experiment SD Price C. Paxson ...

... Accession Number : ADA074711. Title : Absolute Calibration of a Uranium - 238 Fast-Neutron Detector. Descriptive Note : Technical note,. ...

... Accession Number : ADA483536. Title : Absolute Calibration of Time Receivers with DLR's GPS/Galileo HW Simulator. Descriptive ...

A low-pressure hydrogen discharge lamp was calibrated for radiant intensity in the vacuum ultraviolet spectral region on an absolute basis and was employed as a laboratory standard source in spectrograph calibrations. This calibration was accomplished thr...

IRAS Explanatory Supplement VI. Flux Reconstruction and Calibration C. Absolute Calibration C.1 General Philosophy ...

the verification of the antenna beam alignment of all frequencies and polarizations,. the determination of the absolute calibration factor from the image ...

This activity uses the CHRONOS website to determine the absolute age of a portion of the geological time scale through the construction and use of a calibration curve

Sensor calibrations using NBS standard of spectral irradiance, as used for Mariner IV CANOPUS sensor

Physics-based exploitation of image data from Earth observing sensors requires knowledge of the accuracy, stability and repeatability of a sensor's radiometric response within its in-flight environment. Vicarious radiometric calibration techniques, using terrestrial targets, provide an effective approach to obtaining this knowledge by measuring system performance under actual ...

The Multispectral Thermal Imager (MTI) was designed as an imaging radiometer with absolute calibration requirements established by Department of Energy (DOE) mission goals. Particular emphasis was given to water surface temperature retrieval using two mid wave and three long wave infrared spectral bands, the fundamental requirement was a surface ...

The Multispectral Thermal Imager (MTI) was designed as an imaging radiometer with absolute calibration requirements established by Department of Energy (DOE) mission goals. Particular emphasis was given to water surface temperature retrieval using two mid wave and three long wave infrared spectral bands, the fundamental requirement was a surface ...

We constructed a precise early Eocene orbital cyclostratigraphy for DSDP Site 550 (Leg 80, Goban Spur, North Atlantic) utilizing precession related cycles as represented in a high-resolution X-ray fluorescence based barium core log. Based on counting of those cycles, we constrain the exact timing of two volcanic ash layers in Site 550 which correlate to ...

The Landsat archive provides more than 35 years of uninterrupted multispectral remotely sensed data of Earth observations. Since 1972, Landsat missions have carried different types of sensors, from the Return Beam Vidicon (RBV) camera to the Enhanced Thematic Mapper Plus (ETM+). However, the Thematic Mapper (TM) sensors on Landsat 4 (L4) and Landsat 5 (L5), launched in 1982 and 1984 respectively, ...

... or other sites identified as related to S & T organizations. ... Title : ABSOLUTE INVARIANCE AND INVARIANCE TO EPSILON IN THE THEORY OF ...

Jul 21, 2011 ... MISR has challenging radiometric specifications of 3% absolute, and 1% band and camera-relative calibration. The radiometric calibration is ...

... SUBJECT TERMS Moon, surface 16. ... Calibration against the Moon I: A disk-resolved lunar model for absolute reflectance calibration ...

... Accession Number : ADA537860. Title : Calibration Against the Moon. I: A Disk-Resolved Lunar Model for Absolute Reflectance Calibration. ...

Research aimed at improving the inflight absolute radiometric calibration of advanced land observing

ultraviolet spectrophotometers to an altitude of about 2 10 ..... the absolute calibration of the spectrophotometer. The interpretation in ...

The EnviSat altimeter, RA-2, is intended to continue an uninterrupted series of measurements of sea-level and ice-sheet elevation started by ERS-1 in 1991. To fully exploit these measurements, an absolute reference in the time series, and a distinction between instrumental artifacts and significant geophysical signals, is necessary. Therefore, the range bias and instrument ...

A description is given work performed on a program to develop an electrically calibrated detector (also called absolute radiometer, absolute detector, and electrically calibrated radiometer) that could be used to realize, maintain, and transfer a scale of...

The Low-Background Infrared (LBIR) facility at NIST has performed on-site calibration and initial off-site deployments of a new infrared transfer radiometer with an integrated cryogenic Fourier transform spectrometer (Cryo- FTS). This mobile radiometer can be deployed to customer sites for broadband and spectral ...

The consensus regarding the absolute calibrations of the spectra of alpha Lyr and subdwarfs provoked a revision of the calibration of the Geneva photometric system passbands. The alterations made to the earlier version by Rufener and Maeder (1971) are sma...

Effective management of water resources in arid and semi-arid areas demands studies that cross over the disciplinaries of natural and social sciences. An integrated Hydrological, Ecological and Economical (HEE) modeling system at regional scale has been developed to assess water resources use and ecosystem production in arid and semi-arid areas. As a physically-based distributed modeling system, ...

This paper deals with the development of empirical relationships for the estimation of Arias Intensity and Cumulative Absolute Velocity as a function of Housner Intensity. These ground motion parameters are evaluated for a data set of natural accelerograms previously used in the calibration of attenuation equations in Europe and the Middle East. The family ...

Over the past two decades, superconducting gravimeters (SGs) have been a key tool to investigate a number of geophysical processes leading to time-variable gravity changes. As SGs are relative meters, even though they are the most sensitive and stable devices currently available, they need to be accurately calibrated. Each branch of Earth sciences that benefits from ...

An absolute spectroradiometric scale has been developed based on an electrically calibrated absolute detector and silicon detector-interference filter combination. Using the recently adopted definition of the photometric base unit, the candela, the absolute spectroradiometric scale was used to realize a photometric ...

Ball Aerospace and Technologies Corporation in Boulder, Colorado, has developed a heliostat facility that will be used to determine the preflight radiometric calibration of Earth-observing sensors that operate in the solar-reflective regime. While automatically tracking the Sun, the heliostat directs the solar beam inside a thermal vacuum chamber, where the sensor under test ...

A simple procedure is described for the calibration of a shadow shield whole-body monitor to determine the absolute amount of a radioisotope at various body sites of a patient. It is possible to measure the turnover of the isotope in different tissues from day to day, or to compare the uptake of successive doses of isotope at ...

A comparison of parallel UBV observations obtained using the Night Sky Photometer (NSP) of the UK 1.2-m Schmidt Telescope and a photometric telescope at the same site led to recalibrations of the U-, B- and V-band surface brightness measurements of the NS...

A series of measurements of infrared apparent temperatures of 10 selected sites in lunar maria has been undertaken, using an infrared receiver (11.3 microns). The experimental procedures are described. The theory of the receiver is developed and the theory of two methods of calibration of the measurements is given. This method was applied during two ...

The goal of this grant was to develop an absolutely calibrated spectral radiometer covering the 1 to 5 {micro}m spectral region of the DOE ARM (Atmospheric Radiation Measurements) program. This instrument is called the Absolute Solar Transmittance Interferometer (ASTI). This effort was based on earlier results from grant ...

A PBS/NOVA lesson (with optional accompanying video) for which students will build and calibrate a thermometer, demonstrate the concept of temperature, measure temperature, and learn the history of the invention of the thermometer and the idea of absolute zero.

... Precise time transfer experiments using GPS with time stability's under ten ... the use of advanced GPS simulators to measure the absolute time error ...

The goal of this program was to design, build, test, and characterize a flight qualified calibration source and monitor for a Dark Energy related experiment: ACCESS - 'Absolute Color Calibration Experiment for Standard Stars'. This calibration source, the...

A technique for absolute end-to-end calibration of a fully polarimetric microwave radiometer is presented. The technique is based on the tri-polarimetric calibration technique of Gasiewski and Kunkee but extended to provide a means of calibrating all four...

... we will address here are: pitch and roll improvements, L-Band absolute and ocean calibration, instrument stability, and environmental noise sources ...

(on an island or offshore platform) and in a region where the logistics involved are not prohibitively expensive. Absolute calibration of radar altimeters ...

The aim of this project was to provide an absolute photometric calibration for an underwater photometer in use at the Naval Oceans Systems Center in San Diego. This was made by using as a reference light standard, the chemiluminescence reaction of luminol...