Photon counting detector array algorithms for deep space optical communications

2016 ◽  
Author(s):  
Meera Srinivasan ◽  
Kenneth S. Andrews ◽  
William H. Farr ◽  
Andre Wong
Keyword(s):  
Optical Communications ◽  
Photon Counting ◽  
Detector Array ◽  
Deep Space ◽  
Photon Counting Detector

scholarly journals Signal Acquisition with Photon-Counting Detector Arrays in Free-Space Optical Communications

2019 ◽  
Author(s):  
Muhammad Bashir ◽  
Mohamed-Slim Alouini
Keyword(s):  
False Alarm ◽  
Optical Communications ◽  
Upper Bound ◽  
Free Space ◽  
Photon Counting ◽  
Acquisition Time ◽  
Beam Radius ◽  
Free Space Optical ◽  
Detector Arrays ◽  
Photon Counting Detector

Pointing and acquisition are an important aspect of free-space optical communications because of the narrow beamwidth associated with the optical signal. In this paper, we have analyzed the pointing and acquisition problem in free-space optical communications for photon-counting detector arrays and Gaussian beams. In this regard, we have considered the maximum likelihood detection for detecting the location of the array, and analyzed the one-shot probabilities of missed detection and false alarm using the scaled Poisson approximation. Moreover, the upper/lower bounds on the probabilities of missed detection and false alarm for one complete scan are also derived, and these probabilities are compared with Monte Carlo approximations for a few cases. Additionally, the upper bounds on the acquisition time and the mean acquisition time are also derived. The upper bound on mean acquisition time is minimized numerically with respect to the beam radius for a constant signal-to-noise ratio scenario. Finally, the complementary distribution function of an upper bound on acquisition time is also calculated in a closed form. Our study concludes that an array of smaller detectors gives a better acquisition performance (in terms of acquisition time) as compared to one large detector of similar dimensions as the array. <br>

scholarly journals Evaluation of conventional imaging performance in a research whole-body CT system with a photon-counting detector array

2016 ◽  
Vol 61 (4) ◽  
pp. 1572-1595 ◽  
Author(s):  
Zhicong Yu ◽  
Shuai Leng ◽  
Steven M Jorgensen ◽  
Zhoubo Li ◽  
Ralf Gutjahr ◽  
...  
Keyword(s):  
Photon Counting ◽  
Detector Array ◽  
Whole Body ◽  
Conventional Imaging ◽  
Photon Counting Detector ◽  
Whole Body Ct ◽  
Ct System ◽  
Imaging Performance ◽  
Body Ct

Optical cross-talk effect in a semiconductor photon counting detector array

2005 ◽  
Author(s):  
Ivan Prochazka ◽  
Karel Hamal ◽  
Lukas Kral ◽  
Josef Blazej
Keyword(s):  
Cross Talk ◽  
Photon Counting ◽  
Detector Array ◽  
Photon Counting Detector

scholarly journals Signal Acquisition with Photon-Counting Detector Arrays in Free-Space Optical Communications

2019 ◽  
Author(s):  
Muhammad Bashir ◽  
Mohamed-Slim Alouini
Keyword(s):  
False Alarm ◽  
Optical Communications ◽  
Upper Bound ◽  
Free Space ◽  
Photon Counting ◽  
Acquisition Time ◽  
Beam Radius ◽  
Free Space Optical ◽  
Detector Arrays ◽  
Photon Counting Detector

Pointing and acquisition are an important aspect of free-space optical communications because of the narrow beamwidth associated with the optical signal. In this paper, we have analyzed the pointing and acquisition problem in free-space optical communications for photon-counting detector arrays and Gaussian beams. In this regard, we have considered the maximum likelihood detection for detecting the location of the array, and analyzed the one-shot probabilities of missed detection and false alarm using the scaled Poisson approximation. Moreover, the upper/lower bounds on the probabilities of missed detection and false alarm for one complete scan are also derived, and these probabilities are compared with Monte Carlo approximations for a few cases. Additionally, the upper bounds on the acquisition time and the mean acquisition time are also derived. The upper bound on mean acquisition time is minimized numerically with respect to the beam radius for a constant signal-to-noise ratio scenario. Finally, the complementary distribution function of an upper bound on acquisition time is also calculated in a closed form. Our study concludes that an array of smaller detectors gives a better acquisition performance (in terms of acquisition time) as compared to one large detector of similar dimensions as the array. <br>

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