An introduction on a CCD camera+filter group system for acquiring surface vnir hyperspectral images with high spatial resolution(CFGIS) and its preliminary study on the mineral spectral distribution of rock surfaces*

2005 ◽  
Author(s):  
Yongchao Zhao ◽  
Ran Liu ◽  
Tuanjie Liu ◽  
Zhijun Meng ◽  
Lin Wang ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Spectral Distribution ◽  
High Spatial Resolution ◽  
Ccd Camera ◽  
Hyperspectral Images ◽  
Group System ◽  
Filter Group ◽  
Preliminary Study

Determination of the Regional Function of the Heart

2002 ◽  
Author(s):  
Evren U. Azeloglu ◽  
Glenn R. Gaudette ◽  
Irvin B. Krukenkamp ◽  
Fu-Pen Chiang
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Speckle Pattern ◽  
Strain Tensor ◽  
Ccd Camera ◽  
Speckle Interferometry ◽  
Left Ventricular ◽  
Stroke Work ◽  
Regional Function

Unlike many other engineering designs, the heart, a pressure vessel, shows variations within its chambers and surface in terms of mechanical function. This necessitates a whole field technique with high spatial resolution. Computer aided speckle interferometry (CASI), a nondestructive examination technique, is herein developed for this purpose. A speckle pattern was created on the surface of isolated rabbit hearts. Images of the beating hearts werc acquired with a charge-couple device (CCD) camera for one second at a rate of 50 frames per second. CASI was used to determine the 2-D displacement vectors over regions of approximately 4 × 6 mm. Regional area stroke work (the integral of the left ventricular pressure with respect to area), the first invariant of the 2-D strain tensor, and the principle strains were used to determine the regional function. After occluding the blood supply to a region of the heart, significant changes were detected in all the previously mentioned parameters. Commonly used techniques cannot determine 2-D strain and lack the high spatial resolution of CASI. Determination of the 2-D strain can provide useful data on the functionality of the heart.

Preliminary study of a visible, high spatial resolution spectrometer for DEMO divertor survey

2020 ◽  
Vol 15 (01) ◽  
pp. C01008-C01008
Author(s):  
W. Gonzalez ◽  
W. Biel ◽  
Ph. Mertens ◽  
M. Tokar ◽  
O. Marchuk ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Preliminary Study ◽  
Resolution Spectrometer

scholarly journals Instrumentation for the Measurement of High Energy Phenomena on NASA Spacecraft

1971 ◽  
Vol 41 ◽  
pp. 134-134
Author(s):  
Albert G. Opp ◽  
Nancy G. Roman
Keyword(s):  
Spatial Resolution ◽  
Spectral Distribution ◽  
High Spatial Resolution ◽  
High Sensitivity ◽  
High Energy ◽  
Temporal Variations ◽  
X Ray ◽  
Sky Survey ◽  
Beryllium Window ◽  
Proportional Counters

High energy astrophysical observations supported by the National Aeronautics and Space Administration will be conducted primarily from the Small Astronomy Satellites (SAS) and the High Energy Astronomy Observatories (HEAO). At the present time, three Small Astronomy Satellites have been approved for flight. The first (SAS A) will carry a set of collimated proportional counters to conduct a high sensitivity, high spatial resolution, all sky survey for X-ray sources, to search for temporal variations in the source intensity, and to measure the spectral distribution of sources in the energy range 1 to 20 keV. The spacecraft will carry two collimator systems of 1 by 10 deg and 10 by 10 deg fullwidth. The proportional counters are gas-filled beryllium window tubes. SAS A is planned for launch in late 1970.

Sign in / Sign up

Export Citation Format

Share Document