Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Craig K. Rushforth"'
Publikováno v:
Applied optics. 18(12)
This paper describes a fast direct algorithm for obtaining least-squares phase estimates from arrays of noisy phase differences. The algorithm uses the fast Fourier transform to diagonalize and decouple the system of equations which results from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b98c1b09084cb63b1590d14b9281b392
https://pubmed.ncbi.nlm.nih.gov/20212602
https://pubmed.ncbi.nlm.nih.gov/20212602
Autor:
Keming Zhou, Craig K. Rushforth
Publikováno v:
Applied Optics. 30:2906
In this paper, we discuss several iterative methods for solving the system of linear equations that arises in the process of solving a Fredholm integral equation of the first kind. When applied to the very large systems that arise in connection with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f9bc56ea8d7562776f517dbb4c1f2db
https://doi.org/10.1364/ao.30.002906
https://doi.org/10.1364/ao.30.002906
Publikováno v:
Bioelectromagnetics. 9:315-336
An elementary model consisting of one charged particle in a viscous medium exposed to weak ac-dc low-frequency magnetic fields is analyzed to identify and explain the fundamental characteristics of the physical mechanisms that result in a resonance r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5c15bdd952487fae81f7910ce09936a
https://doi.org/10.1002/bem.2250090402
https://doi.org/10.1002/bem.2250090402
Publikováno v:
Information Sciences. 14:75-87
In this paper, we consider the problem of linearly prefiltering and coding a random process which is to be sampled in time and transmitted over a noisy channel. We take the linear reconstruction filter at the receiving end to be fixed and known, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba859a863115ff471915b456eb70d1b8
https://doi.org/10.1016/0020-0255(78)90028-2
https://doi.org/10.1016/0020-0255(78)90028-2
Autor:
Craig K. Rushforth
Publikováno v:
Information and Control. 15:33-37
Posner (1968) has recently discussed a decoding scheme for certain orthogonal and biorthogonal codes which is based on the fast Fourier transform on a finite abelian group. In this paper, we present an alternate approach to this problem based on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb7937e59bd250025474e6cb52e916b1
https://doi.org/10.1016/s0019-9958(69)90601-9
https://doi.org/10.1016/s0019-9958(69)90601-9
Publikováno v:
Topical Meeting on Signal Recovery and Synthesis with Incomplete Information and Partial Constraints.
In the past, attempts to increase the resolution of images by modification of the imaging system or by image enhancement techniques have been two separate fields of endeavor. Research on imaging systems concentrated on resolution increase by use of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f3698bafc9af9dfa9831bf19956af5f
https://doi.org/10.1364/srs.1983.wa7
https://doi.org/10.1364/srs.1983.wa7
Autor:
Craig K. Rushforth, Robert J. Currie
Publikováno v:
MILCOM 1985 - IEEE Military Communications Conference.
The frame synchronization process in digital data links is very vulnerable to burst jamming. Methods of achieving frame synchronization in the presence of jamming or other large disturbances are presented. It is assumed that the disturbance can be de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39aca87a8dbb84ba921e74ad9848c94c
https://doi.org/10.1109/milcom.1985.4795043
https://doi.org/10.1109/milcom.1985.4795043
Autor:
Richard W Harris, Craig K Rushforth
The problem considered is the restoration of incoherent optical objects which have been diffracted by an optical system and corrupted by detector and additive background noise. The approach in solving the problem is basically numerical and considers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3472c1c8966f6805e0e78cc7287f3a2
https://doi.org/10.21236/ad0649261
https://doi.org/10.21236/ad0649261
Autor:
Mark C Austin, Craig K Rushforth
Estimation and detection of optical signals distorted by diffraction, additive background noise, and multiplicative (detection) noise are studied. Assuming that the output of the detector is a Poisson process, that the signal and noise are additive,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64b003e2a5ca001916ec253b2d20b98f
https://doi.org/10.21236/ad0649667
https://doi.org/10.21236/ad0649667