Ultimate sensitivity of space-camera imaging devices with particular reference to the slow- scan vidicon.
Ultimate sensitivity of space camera imaging devices with particular reference to slow scan vidicon
LUMINOUS INTENSITY↗
SEARCH · Engineering Papers
Results for “CAMERAS”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The Mars facsimile camera.
Panoramic facsimile camera for unmanned space operation providing 360 degrees IR and visible spectrum imagery
INFRARED SPECTRUM↗
The image dissector camera - A new approach to spacecraft sensors.
Image dissector camera providing high resolving power, photometric fidelity and long life for use in meteorological satellite
IMAGE DISSECTOR TUBE↗
The ATS-1 spin scan camera experiment.
ATS-1 spin scan camera experiment for photographic recording of weather motions
METEOROLOGY↗
The spin scan camera system on application technology satellite. I.
ATS-1 spin scan camera experiment for photographic recording of weather motions
SATELLITE PHOTOGRAPHY↗
9 mu m cutoff 640x512 pixel GaAs/AlxGa1-xAs quantum well infrared photodetector hand-held camera
In this paper, we discuss the development of this very sensitive long wavelength infrared camera base on a GaAs/AlGaAs QWIP focal plane array and its performance in quantum efficiency, NETD, uniformity and operability.
focal plane arrays QWIPS long-wavelength infrared ↗
A high frame rate CCD camera with region-of-interest capability
This paper presents the design and preliminary results of a custom high-speed CCD camera utilizing a Texas Instruments TC237 CCD imager chip with sub-frame window read out.
CCD camera sub-window optical communications↗
Fabrication and Characterization of 640x486 GaAs Based Quantum Well Infrared Photodetector (QWIP) Snapshot Camera
In this paper, we discuss the development of this very sensitive long wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in quantum efficiency, NE(delta)T, uniformity, and operability.
Intersubband Transitions Infrared (IR) Long-wavele↗
Long Wavelength 256 X 256 Quantum Well Infrared Photodetector Portable Camera
In this paper, we discuss the development of very sensitive long wavelength infrared (LWIR) GaAs/AlGal-xAs Quantum well infrared photodetectors (QWIPS), fabrication of random reflectors for efficient light coupling, and the demonstration of a LWIR 256 X 256 focal plane array imaging camera. Excellent imagery, with a noise equivalent differential temperature (NE-delta-T) of 25 mK has been achieved.
long wavelength inrared photodetectors random refl↗
(abstract) 9 (micro)m Cutoff 640x480 Quantum Well Infrared Photodetector (QWIP) Focal Plane Array Camera
Long wavelength infrared (LWIR) detectors, 8 (micro)m to 12 (micro)m, are of great interest for a variety of ground-based and space-borne applications. These applications have placed stringent requirements on the performance of the infrared detectors and arrays including high detectivity, low dark current, uniformity, radiation hardness, and low power dissipation. I will discuss the development and progress of GaAs based long-wavelength quantum well infrared photodetectors (QWIPs) to meet those stringent requirements and the demonstration of a 9 (micro)m cutoff 640x480 QUIP focal plane array camera. The noise equivalent temperature difference of the focal plane array is 25 mK at 300 K background and the operating temperature is 70 K.
long wavelength infrared detectors LWIR detector a↗
CMOS Image Sensors: Electronic Camera On A Chip
Recent advancements in CMOS image sensor technology are reviewed, including both passive pixel sensors and active pixel sensors. On- chip analog to digital converters and on-chip timing and control circuits permit realization of an electronic camera-on-a-chip. Highly miniaturized imaging systems based on CMOS image sensor technology are emerging as a competitor to charge-coupled devices for low cost uses.
Space Microelectronics Image Sensors APS Digital I↗
Hubble Space Telescope Wide Field Planetary Camera Observations of Neptune
The Hubble Space Telescope Wide Field Planetary Camera 2 was used to observe Neptune on 28-29 June 1994.
Neptune wide field planetary camera UV images meth↗
Operation of the JPL Satellite Test Assistant Robot (STAR) and Its Integral Infrared Imaging Camera in a Thermal/Vacuum Test Environment
A new multi-axis multi-camera, robotic inspection system has been developed for use inside JPL's thermal/vacuum test chambers wherein satellites and other flight hardware are tested in a simulated space environment.
STAR stereoscopically infrared imaging camera↗
Long-Wavelength 256X256 GaAs/AlGaAs Quantum Well Photodetector (QWIP) Palm-Size Camera
In this paper, we discuss the development of this very sensitive long-wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in terms of quantum efficiency, NEAT, uniformity, and operability.
infrared (IR) long-wavelength infrared LWIR IR Cam↗
Long-Wavelength 256X256 GaAs/AIGaAs Quantum Well Infrared Photodetector (QWIP) Palm-Size Camera
In this paper, we discuss the development of this very sensitive long-wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in terms of quantum efficiency, NET, MRDT, uniformity, and operability.
long-wavelength infrared LWIR focal plane array MR↗
Demonstration of First 9 Micron cutoff 640 x 486 GaAs Based Quantum Well Infrared PhotoDetector (QWIP) Snap-Shot Camera
In this paper, we discuss the development of this very sensitive long waelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in quantum efficiency, NEAT, uniformity, and operability.
arsenide (GaAs) quantum well infrared photodetecto↗
A Highly Miniaturized, Battery Operated, Commandable, Digital Wireless Camera
This paper discusses the design, development, testing, and demonstration of a highly miniaturized, battery operated, digital wireless camera.
miniaturized digital wireless camera↗
Generalized camera calibration including fish-eye lenses
A method is described for accurately calibrating cameras including radial lens distortion, by using points such as those measured from a calibration fixture.
camera calibration lens distortion fish-eye lens e↗