Results 311 to 320 of about 5,337,605 (357)

Radar detection in coherent Weibull clutter

IEEE Transactions on Acoustics, Speech, and Signal Processing, 1987
In this correspondence, a new model for the Weibull clutter is presented. Then attention is turned to the design of the optimum radar processor to detect an a priori known target signal embedded in coherent Weibull clutter. An original detection scheme is presented and the corresponding performance is assessed.
Alfonso Farina, A. Russo, F. Scannapieco
openaire   +1 more source

Efficient preamble design and digital signal processing in upstream burst-mode detection of 100G TDM coherent-PON

IEEE\/OSA Journal of Optical Communications and Networking, 2020
Coherent optics has been proved to be a promising candidate for 100 Gb/s and even beyond single-wavelength time-division multiplexing passive optical networks (TDM-PONs).
Junwen Zhang, Jia Zhensheng, Mu Xu, Hanwang Zhang, L. A. Campos   +4 more
semanticscholar   +1 more source

Coherent Detection of Targets in Clutter.

1996
The area of research dedicated to the design and optimisation of radar detection schemes is a constantly evolving held of study. This paper contributes to the held of parametric detection by utilising the Generalised Bessel Function K (GBK) distribution with parameter c = 2, (the Jakeman-Tough model), as a model for radar clutter in the design of an ...
Smith, JC, Martin, M, Iskander, DR
openaire   +2 more sources

Coherent MAP detection of DQPSK bits

IEEE Communications Letters, 2000
Both IS-136 and PDC digital cellular systems employ forward error correction (FEC) encoding followed by a form of DQPSK modulation. In this letter, we derive the maximum a posteriori (MAP) bit detector for DQPSK modulation in non-ISI channels for a coherent receiver with one or more antennas.
Gregory E. Bottomley, Hüseyin Arslan, Rajaram Ramesh, Gustav Brismark   +3 more
openaire   +1 more source

Coherent, Self-Coherent, and Differential Detection Systems

2011
In order to meet the ever-increasing demand in telecommunication capacity, fiberoptic communication systems have been evolving dramatically over the past decade [1, 2]. The fiberoptic communication traffic growth has been at a rate of about 2 dB per year, representing a traffic increase of a factor of 100 in 10 years [1, 2].
Xiang Liu, Moshe Nazarathy
openaire   +1 more source

Algorithms for Coherent Detection

Optical Fiber Communication Conference, 2010
□ Fiber optics is converging with other digital communications fields – cellular, satellite, digital subscriber line, etc. □ But techniques from existing fields are of limited help ▪ our carrier linewidth is much higher, 10-4 baud rate ▪ our impairments are of long duration, >100 symbols ▪ our data rate is much higher, 100Gb/s □ We must develop our own
openaire   +1 more source

Detection of Cyclostationarity Using Generalized Coherence

2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018
A class of detectors for cyclostationarity is introduced. These detectors are based on the use of generalized coherence to measure correlation among two or more collections of random vectors. The generalized coherence framework allows any finite collection of pertinent samples of the cyclic auto-correlation function estimates formed from the measured ...
Songsri Sirianunpiboon, Stephen D. Howard, Douglas Cochran   +2 more
openaire   +1 more source

Coherent Change Detection for Multipass SAR

IEEE Transactions on Geoscience and Remote Sensing, 2018
This paper focuses on the detection, from a stack of repeated-pass interferometric synthetic aperture radar (SAR) images, of such changes causing a target to completely lose the correlation between one epoch and another. This can be the consequence of human activities, such as construction, destruction, and agricultural activities, and also be the ...
Andrea Monti-Guarnieri, Maria Antonia Brovelli, Marco Manzoni, Mauro Mariotti d'Alessandro, Monia Elisa Molinari, Daniele Oxoli   +5 more
openaire   +1 more source

Coherent or Heterodyne Detection

1978
In the previous chapter we discussed the detection of the incident power in an optical or infrared wave, basically ignoring the actual frequency of the wave except in the value of the quantum energy and the wavelength or frequency cutoff of the photon detector.
openaire   +1 more source

Coherent receiver for AIS satellite detection

2010 4th International Symposium on Communications, Control and Signal Processing (ISCCSP), 2010
AIS is a universal shipborne Automatic Identification System recently introduced for traffic monitoring and safety at sea. Ships exchange navigational information to identify and localize vessels in a short range to avoid collisions. AIS signals use Gaussian Minimum Shift Keying (GMSK) for transmission.
Gallardo, M. M. A. Jurado, SORGER, Ulrich   +1 more
openaire   +2 more sources