Results 251 to 260 of about 924,536 (300)

Cross calibration in longitudinal studies

Statistics in Medicine, 2004
AbstractIn a long‐running longitudinal study using complex machinery to obtain measurements, it is sometimes necessary to replace the machine. This can result in lack of continuity in the measurements that can overwhelm any treatment effect or time trend.
Walter T, Ambrosius, Siu L, Hui
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Cross-Layer Distillation with Semantic Calibration

Proceedings of the AAAI Conference on Artificial Intelligence, 2021
Recently proposed knowledge distillation approaches based on feature-map transfer validate that intermediate layers of a teacher model can serve as effective targets for training a student model to obtain better generalization ability. Existing studies mainly focus on particular representation forms for knowledge transfer between manually specified ...
Defang Chen, Jian-Ping Mei, Yuan Zhang, Can Wang, Zhe Wang, Yan Feng, Chun Chen   +6 more
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Cross-calibration between airborne SAR sensors

IEEE Transactions on Geoscience and Remote Sensing, 1993
A comparative study of data acquired by two different airborne synthetic aperture radar (SAR) sensors from the same site is presented. External, ground-target-based calibration has been performed on the NASA/JPL DC-8 SAR C-band data and the DLR E-SAR C-band data collected over the DLR test site in Oberpfaffenhofen.
Zink, M., Olivier, Ph. *), Freeman, A. **)   +2 more
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A Satellite Cross-Calibration Experiment

IEEE Geoscience and Remote Sensing Letters, 2004
Recently, the Advanced Earth Observing Satellite 2 (ADEOS-2) was launched (December 14, 2002) successfully, and the Global Imager (GLI) onboard the ADEOS-2 satellite became operational in April 2003. In a first calibration checkup, the radiometric performance of GLI was compared relatively to that of other sensors on different satellites with different
J. Nieke, T. Aoki, T. Tanikawa, H. Motoyoshi, M. Hori   +4 more
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Truths cross-calibration uncertainty tool

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
This paper describes a set of tools, algorithms and methodologies that have been developed and used in order to estimate the radiometric uncertainty achievable for a Sentinel 2/3 like sensor through in-flight cross-calibration using a well-calibrated hyperspectral SI traceable reference sensor such as the proposed TRUTHS (Traceable Radiometry ...
Javier Gorrono, Nigel Fox, Agnieszka Bialek, Paul Green, Tracy Scanlon   +4 more
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Cross Calibration by FFT Equalization

Journal of Dynamic Systems, Measurement, and Control, 1997
The classical calibration problem is primarily concerned with comparing an approximate measurement method with a very precise one. Frequently, both measurement methods are very noisy, so we cannot regard either method as giving the true value of the quantity being measured.
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OCO/GOSAT Preflight Cross-Calibration Experiment

IEEE Transactions on Geoscience and Remote Sensing, 2010
The Orbiting Carbon Observatory (OCO) by NASA's Jet Propulsion Laboratory (JPL) and Greenhouse gases Observing SATellite (GOSAT) by JAXA were built to provide independent measures of the global distributions of carbon dioxide (CO2) from space. GOSAT achieved a successful orbit on January 23, 2009, and OCO failed its launch attempt on February 24, 2009.
F. Sakuma, C.J. Bruegge, D. Rider, D. Brown, S. Geier, S. Kawakami, A. Kuze   +6 more
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Calibration of estuarine current crosses

Estuarine, Coastal and Shelf Science, 1982
Abstract Tethered current crosses are simple, reliable tools in making measurements of estuarine currents in the absence of surface waves. The standard error of the estimate of current speed is less than 5 cm s−1 for the particular crosses and weights used in a calibration experiment.
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Seismic system calibration: 2. Cross-spectral calibration using random binary signals

Bulletin of the Seismological Society of America, 1979
abstractWe present a rapid and accurate method of calibrating seismic systems using a random binary calibration signal and cross-spectral techniques. The complex transfer function obtained from the cross spectrum is least-squares fit to the ratio of two polynomials in s(s = iω) whose degrees are determined by a linear systems analysis.
Jon Berger, Duncan Carr Agnew, Robert L. Parker, William E. Farrell   +3 more
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Assessment of HISUI radiometric performance using vicarious calibration and cross-calibration

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
The Hyperspectral Imager Suite (HISUI) is a future hyper-spectral and multispectral sensor developed by Japanese Ministry of Economy, Trade, and Industry (METI). Radiometric calibration of satellite sensor system is very important for the higher level products with high quality.
Hirokazu Yamamoto, Toru Kouyama, Kenta Obata, Satoshi Tsuchida   +3 more
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