Results 291 to 300 of about 272,180 (347)

Active pixel sensor (APS) based star tracker

1998 IEEE Aerospace Conference Proceedings (Cat. No.98TH8339), 2002
Charge-Coupled Device (CCD) based star trackers provide reliable attitude estimation onboard most 3 axis stabilized spacecraft. The spacecraft attitude is calculated based on observed positions of stars, which are located and identified in a CCD image of the sky.
C.C. Liebe, E.W. Dennison, B. Hancock, R.C. Stirbl, B. Pain   +4 more
openaire   +1 more source

Active pixel sensor matrix based on monolayer MoS2 phototransistor array

Nature Materials, 2022
Akhil Dodda, Darsith Jayachandran, Andrew Pannone, N. Trainor, S. Stepanoff, M. Steves, Shiva Subbulakshmi Radhakrishnan, S. Bachu, Claudio W Ordonez, J. Shallenberger, J. Redwing, K. Knappenberger, D. Wolfe, Saptarshi Das   +13 more
semanticscholar   +1 more source

Analysis of self-correcting active pixel sensors

SPIE Proceedings, 2005
This paper evaluates the operation of self-correcting active pixel sensors presented in [6] using both Signal-to-Noise Ratio and Dynamic Range figures. The evaluation is based on a simplified Active Pixel Sensing (APS) model. We show that in the absence of stuck faults (i.e., no errors) the performance of the system suffers from considerable ...
Khaled Salama, Ahmad Al-Yamani
openaire   +1 more source

Monolithic active pixel sensor for dosimetry application

Electrical Performance of Electrical Packaging (IEEE Cat. No. 03TH8710), 2004
A Monolithic Active Pixel Sensor (MAPS) prototype device for real-time dosimetry in brachytherapy application is presented. A novel charge sensitive element is used for pixel design. It features a built-in charge-to-current conversion and allows operation mode with charge integration.
F. Cannillo, G. Deptuch, W. Dulinski
openaire   +1 more source

Hybrid active pixel sensors in infrared astronomy

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005
Abstract Infrared astronomy is currently benefiting from three main technologies providing high-performance hybrid active pixel sensors. In the near infrared from 1 to 5 μm two technologies, both aiming for buttable 2K×2K mosaics, are competing, namely InSb and HgCdTe grown by LPE or MBE on Al 2 O 3 , Si or CdZnTe substrates. Blocked impurity band Si:
Gert Finger, Reinhold J. Dorn, Manfred Meyer, Leander Mehrgan, Jörg Stegmeier, Alan Moorwood   +5 more
openaire   +1 more source

Design of Nupix-A1, a Monolithic Active Pixel Sensor for Heavy-ion Physics

Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment, 2022
Ping Yang, X. Niu, Wei Zhou, Yuan Tian, Qi-Ling Wang, Ju Huang, Yongsheng Wang, F. Fu, B. Cao, Ziyao Xie, R. He, R. Yin, Chengxin Zhao   +12 more
semanticscholar   +1 more source

Radiation Damages in CMOS Active Pixel Sensors

Imaging and Applied Optics, 2011
This paper presents a summary of the main results we observed on irradiated imagers manufactured using a0.18µm CMOS processes dedicated to imaging. Several types of energetic particles have been used to irradiate the devices.
Goiffon, Vincent, Magnan, Pierre, Virmontois, Cédric, Cervantes, Paola, Corbière, Franck, Estribeau, Magali   +5 more
openaire   +2 more sources

A CMOS active-pixel image sharpness sensor

2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS), 2014
The technique of maximizing image sharpness is a powerful means of adaptively correcting phase aberrations in wavefronts. Crucial to this correction is a sensor that provides an accurate real-time estimate of image sharpness. In this paper, we introduce a novel image sharpness sensor using CMOS active pixel technology that computes image sharpness at a
Aditya Rayankula, Paul M. Furth
openaire   +1 more source

Active pixel sensors in Nuclear Medicine imaging

2008 IEEE Nuclear Science Symposium Conference Record, 2008
Three CMOS active pixel sensors have been investigated to assess their potential application to Nuclear Medicine imaging. The first, Startracker, contained 525 × 525 pixels each 25 micron square and was coupled via a fiber optic stud to a 20mm × 20mm × 2mm thick segmented CsI(Tl) crystal.
Robert Ott, Noel Evans, Phil Evans, John Osmond, Andy Clark, Jamie Crooks, Mark Prydderich, Renato Turchetta   +7 more
openaire   +1 more source

CMOS Active-Pixel Sensor in low temperature

2014 29th Symposium on Microelectronics Technology and Devices (SBMicro), 2014
This paper presents experimental and simulated results of an Active-Pixel Sensor (APS) circuit operating at different temperatures (300K, 77K, 60K and 40K). The optical sensor used was a silicon photodiode integrated with its electronics in a standard CMOS 0.35µm technology. Interestingly, the pixel worked well at all temperatures tested.
Pedro V. F. do Rosario, Luciana P. Salles, Artur S. B. de Mello, Davies W. de Lima Monteiro   +3 more
openaire   +1 more source