Results 251 to 260 of about 5,369,509 (275)
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A Method for Cross Calibrating Particle Counters
Journal of the IEST, 1986A system for generating participate air contamination standards of known size distribution and concentration was developed and used to determine the accuracy of several optical particle counters (OPCs) for the measurement of paniculate air contamination. Of particular concern was the substantial instrument-to-instrument variability of up to a factor of
Barton Dahneke, Bradley Johnson
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Cross calibration of secondary ion mass spectrometers
Analytical Chemistry, 1985It is known from previous round-robin experiments that relative sensitivity factors, obtained on identical samples by different SIMS instruments, frequently disagree by a factor of up to 50. A method is suggested for cross-calibrating instruments in such a way that relative elemental sensitivity factors determined on one SIMS instrument may be used on ...
Friedrich. Ruedenauer +9 more
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Cross-calibrations of multi-GNSS Receiver Chains
2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC), 2019GNSS receiver chain calibration is a pre-requisite for accurate GNSS time transfer and GNSS time dissemination, which becomes particularly relevant in a competitive multi-GNSS environment. Measurement of GNSS chains based on an absolute calibration approach have been proposed but are not yet operational due to the limited number of results and the ...
P. Waller +3 more
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Cross-Calibration Between QuikSCAT and Oceansat-2
IEEE Transactions on Geoscience and Remote Sensing, 2014This paper presents the procedure to perform cross-calibration of radar backscatter between the QuikSCAT and Oceansat-2 ocean wind scatterometers. Both QuikSCAT and Oceansat-2 are Ku-band dual pencil beam, rotating antenna scatterometers with similar design.
Sermsak Jaruwatanadilok +2 more
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Cross-calibration of interferometric SAR data
IEE Proceedings - Radar, Sonar and Navigation, 2003Generation of digital elevation models from interferometric synthetic aperture radar (SAR) data is a well established technique. Achieving a high geometric fidelity calls for a calibration accounting for inaccurate navigation data and system parameters as well as system imperfections.
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Online cross-calibration of camera and LIDAR
2017 13th IEEE International Conference on Intelligent Computer Communication and Processing (ICCP), 2017In an autonomous driving system, drift can affect the sensor's position, introducing errors in the extrinsic calibration. For this reason, we have developed a method which continuously monitors two sensors, camera, and LIDAR with 16 beams, and adjusts the value of their cross-calibration.
Blaga, Bianca-Cerasela-Zelia +1 more
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Cross-calibration of ground and space radar
IEEE International Geoscience and Remote Sensing Symposium, 2003Presents results from comparing space radar and ground radar to cross-calibrate the Kwajalein polarimetric radar (KPOL) with the spaceborne TRMM Precipitation Radar (PR). Use of self-consistency of polarimetric measurements is implemented to check the absolute calibration of KPOL and is checked against the cross-calibration results of PR and KPOL ...
K. Gojara, V. Chandrasekar
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Preflight cross-calibration activities at NRLM
Advances in Space Research, 1999Abstract Many satellites have been and will be launched recently for monitoring the Earth-wide circumstances such as the greenhouse effect. The preflight calibration of the satellite radiometers is the key to obtain the high quality data and to analyze the physical quantity precisely.
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Cross calibration of independently built spark chambers
International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1986Abstract Two spark chambers, A and B, were independently built with the primary purpose of automatically counting fission tracks registered in solid state nuclear track detectors (SSNTD). The pocket size chamber A uses a 9V-DC power supply to trigger a high voltage pre-discharge through the SSNTD, Makrofol 10 um thick.
G. Ingrao +4 more
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Cross-calibration of axial DEXA systems
Radiography, 2001With X-ray equipment, it may not be generally appreciated that no two X-ray tubes are exactly the same. When tubes of the same type and specification are used they never give exactly the same radiation output even when powered identically. This is because even with the latest manufacturing techniques, slight variations do occur, even in the same ...
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