Mr. John E. Gray Profile

John E. Gray

Lead Scientist at Naval Surface Warfare Ctr Dahlgren Div

SPIE Involvement:

Author

Publications (39)

Proceedings Article | 3 May 2019 Paper

Applications of the Aharonov Ansatz to antenna theory: Part III

John Gray, Kahlil Gedin

Proceedings Volume 11003, 1100314 (2019) https://doi.org/10.1117/12.2519925

KEYWORDS: Antennas, Receivers, Radar, Signal detection, Signal to noise ratio, Signal processing, Interference (communication), Electronic filtering, Sensors, Phased arrays

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Proceedings Article | 3 May 2019 Presentation + Paper

A formulation of noise operators and their applications

John Gray, Stephen Addison

Proceedings Volume 11003, 110030K (2019) https://doi.org/10.1117/12.2519923

KEYWORDS: Interference (communication), Radar, Signal to noise ratio, Sensors, Physics, Signal processing, Transform theory, Monte Carlo methods, Signal detection, Statistical analysis

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Proceedings Article | 4 May 2018 Presentation + Paper

The Aharonov Ansatz as a means for realizing Woodward's synthesis principle for metamaterial designs

John Gray, Kahlil Gedin

Proceedings Volume 10633, 1063311 (2018) https://doi.org/10.1117/12.2304944

KEYWORDS: Radar, Signal detection, Sensors, Signal to noise ratio, Receivers, Antennas, Interference (communication), Filtering (signal processing), Metamaterials, Electronic filtering

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Proceedings Article | 4 May 2018 Presentation + Paper

Application of the operator current to polarization radar and three-dimensional rotations

John Gray, Stephen Addison

Proceedings Volume 10633, 106330H (2018) https://doi.org/10.1117/12.2304895

KEYWORDS: Scattering, Polarization, Radar, Matrices, Quantum mechanics, Motion models, Detection theory, Receivers, Sensors, Doppler effect

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Proceedings Article | 1 May 2017 Presentation + Paper

Does the central limit theorem always apply to phase noise? Some implications for radar problems

John Gray, Stephen Addison

Proceedings Volume 10188, 101880O (2017) https://doi.org/10.1117/12.2262136

KEYWORDS: Scattering, Acoustics, Electromagnetism, Rayleigh scattering, Californium, Mirrors, Receivers, Aerospace engineering

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Proceedings Article | 1 May 2017 Presentation + Paper

The operator approach to the non-uniform Doppler to radar: implications for signal processing

John Gray, Allen Parks, Jeremiah Hansen

Proceedings Volume 10188, 101880R (2017) https://doi.org/10.1117/12.2262126

KEYWORDS: Signal detection, Receivers, Quantum mechanics, Sensors, Physics, Filtering (signal processing), Doppler effect, Radar, Signal processing, Matrices

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Proceedings Article | 12 May 2016 Paper

Some applications of the characteristics non-uniform Doppler to radar

John Gray, Nancy Breaux, Jeremiah Hansen

Proceedings Volume 9829, 982916 (2016) https://doi.org/10.1117/12.2223195

KEYWORDS: Doppler effect, Radar, Electromagnetism, Motion models, Bessel functions, Receivers, Modulation, Sensors, Convolution

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Proceedings Article | 12 May 2016 Paper

The generalized ambiguity function: a bridgework between classical and quantum radar

John Gray, Allen Parks

Proceedings Volume 9829, 98291C (2016) https://doi.org/10.1117/12.2223184

KEYWORDS: Radar, Receivers, Signal detection, Quantum mechanics, Signal to noise ratio, Atrial fibrillation, Sensors, Fourier transforms, Signal processing, Scattering

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Proceedings Article | 27 April 2010 Paper

The Rayleigh problem is everywhere!

John Gray, Stephen Addison

Proceedings Volume 7669, 76690G (2010) https://doi.org/10.1117/12.850670

KEYWORDS: Interference (communication), Telecommunications, Remote sensing, Sensors, Fourier transforms, Signal detection, Physics, Superposition, Signal processing, Scattering

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Proceedings Article | 17 April 2010 Paper

Noise from the perspective of weak values

John Gray, Allen Parks

Proceedings Volume 7702, 77020P (2010) https://doi.org/10.1117/12.850671

KEYWORDS: Interference (communication), Quantum mechanics, Radar, Sensors, Signal processing, Signal detection, Signal to noise ratio, Receivers, Polarization, Signal analysis

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Proceedings Article | 13 April 2010 Paper

The role of extensive variables in nanoscience

John Gray, Francisco Santiago

Proceedings Volume 7703, 77030K (2010) https://doi.org/10.1117/12.850674

KEYWORDS: Superposition, Thermodynamics, Complex systems, Physics, Signal processing, Electromagnetism, Sensors, Warfare, Mechanics, Nonlinear optics

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Proceedings Article | 29 April 2009 Paper

Radar measurement as an operator problem

John Gray, Allen Parks

Proceedings Volume 7308, 73080Z (2009) https://doi.org/10.1117/12.818105

KEYWORDS: Radar, Doppler effect, Quantum mechanics, Sensors, Receivers, Signal to noise ratio, Polarization, Interference (communication), Signal processing, Physics

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Proceedings Article | 28 April 2009 Paper

The post-selection probability current and its implications

John Gray, Allen Parks

Proceedings Volume 7342, 73420G (2009) https://doi.org/10.1117/12.818097

KEYWORDS: Sensors, Quantum mechanics, Space operations, Receivers, Picosecond phenomena, Photons, Polarization, Superposition, Electromagnetism, Warfare

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Proceedings Article | 19 March 2009 Paper

The semantic problem of science and its implications

John Gray, Harold Szu

Proceedings Volume 7343, 73430D (2009) https://doi.org/10.1117/12.818156

KEYWORDS: Mathematics, Brain, Signal processing, Data modeling, Communication engineering, Fuzzy logic, Sensors, Visualization, Physics, Communication theory

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Proceedings Article | 3 April 2008 Paper

The A-V formula, its justification, and implications for signal enhancement

John Gray, Jeff Tollaksen

Proceedings Volume 6976, 69760S (2008) https://doi.org/10.1117/12.778095

KEYWORDS: Physics, Space operations, Electromagnetism, Sensors, Warfare, Roads, Quantum information, Quantum physics, Superposition, Electronic filtering

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Proceedings Article | 3 April 2008 Paper

Memory, contextuality, instrumentality, and quantum mechanics

Jeff Tollaksen, John Gray

Proceedings Volume 6976, 69760R (2008) https://doi.org/10.1117/12.778100

KEYWORDS: Probability theory, Quantum mechanics, Failure analysis, Reliability, Quantum memory, Distance measurement, Physics, Instrument modeling, Measurement devices, Clocks

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Proceedings Article | 7 May 2007 Paper

Characterization of polar to Cartesian coordinates transformation and its effect on target track quality

John Gray, Ali Alouani

Proceedings Volume 6569, 656902 (2007) https://doi.org/10.1117/12.718467

KEYWORDS: Spherical lenses, Electronic filtering, Filtering (signal processing), Laser systems engineering, Laser applications, Radar, Nonlinear filtering, Statistical analysis

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Proceedings Article | 7 May 2007 Paper

Alternative switching logic designs for multiple model filters

A. Sunshine Smith-Carroll, D. Hugh McCabe, John Gray

Proceedings Volume 6569, 656904 (2007) https://doi.org/10.1117/12.720277

KEYWORDS: Switching, Motion models, Logic, Electronic filtering, Mathematical modeling, Filtering (signal processing), Error analysis, Motion estimation, Detection and tracking algorithms, Coastal modeling

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Proceedings Article | 9 April 2007 Paper

Learning, entropy, free energy, an underlying commonality?

John Gray, Harold Szu

Proceedings Volume 6576, 657606 (2007) https://doi.org/10.1117/12.725208

KEYWORDS: Mechanics, Inverse problems, Complex systems, Independent component analysis, Wavelets, Sensors, Neural networks, Statistical modeling, Bayesian inference, Systems modeling

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Statistical Mechanics, which is due primarily to Maxwell, Gibbs, and Boltzmann in the ninetieth century, has proven to be useful model for drawing inferences about the collective behavior of individual objects that interact according to a known force law (which for more general usage is referred to as interacting units.). Collective behavior is determined not by computing F = ma for each interacting unit because the problem is mathematically intractable. Instead, one computes the partition function for the collection of interacting units and predicts statistical behavior from the partition function. Statistical mechanics was united with Bayesian inference by Jaynes [4]. As a continuation, Shannon [7] demonstrated that the partition function assignment of probabilities via the interaction Hamiltonian is the solution to Bayesian assignment of probabilities (based on the maximum entropy method with known means and standard deviations). Once this technique has been applied to a variety of problems and obtained a solution, one can, of course, solve the inverse problem of to determine the solution to an inverse problem to determine what interaction model gives rise to a given probability assignment [1] and [8]. The usage of statistical mechanics allows one can draw general inferences about any complex system including networks [5] by defining "energy", "heat capacity", "temperature", and other thermodynamic characteristics of most complex systems based on the common standard of the Helmholtz free energy. Principle has noted that the aspect of entropy used in reasoning with uncertainty may not be the most appropriate entropy for learning mechanisms [6]. Instead he has explored using Renyi entropy and derived a form of information learning dynamics that has some promising features [2]. To fully realize the potential of the usage of a more generalized entropy to the three aspects of survival, we suggest some connections to the free energy and learning. We also connect some aspects of sensing to probability distributions that suggest why certain search strategies perform better than others. In making these connections, we suggest a fundamental connection waits to be discovered between inference, learning, and related to the manner in which sensing mechanisms perform.

Proceedings Article | 5 May 2006 Paper

The design of a matched filter for phase noise and some of its applications

John Gray

Proceedings Volume 6210, 62100C (2006) https://doi.org/10.1117/12.666116

KEYWORDS: Transform theory, Superposition, Sensors, Radar, Bessel functions, Fourier transforms, Statistical analysis, Radar sensor technology, Remote sensing, Computing systems

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Proceedings Article | 2 May 2006 Paper

Simplified generalized asynchronous track fusion filter

Ali Alouani, John Gray

Proceedings Volume 6238, 62380I (2006) https://doi.org/10.1117/12.665932

KEYWORDS: Sensors, Sensor fusion

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Proceedings Article | 19 May 2005 Paper

Generalized asynchronous track fusion with Feedback

Ali Alouani, John Gray

Proceedings Volume 5810, (2005) https://doi.org/10.1117/12.604754

KEYWORDS: Sensors

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Proceedings Article | 16 May 2005 Paper

A generalization of Huygen's principle and some applications

John Gray, Stephen Addison

Proceedings Volume 5788, (2005) https://doi.org/10.1117/12.603584

KEYWORDS: Antennas, Radar, Radio propagation, Probability theory, Systems modeling, Wave propagation, Receivers, Fourier transforms, Bessel functions, Wavefronts

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Proceedings Article | 25 August 2004 Paper

Multiple model tracking using fuzzy clustering

John Gray, Ali Alouani

Proceedings Volume 5428, (2004) https://doi.org/10.1117/12.542502

KEYWORDS: Fuzzy logic, Sensors, Data modeling, Filtering (signal processing), Switching, Dynamical systems, Signal processing, Detection and tracking algorithms, Process modeling, Electronic filtering

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Proceedings Article | 12 August 2004 Paper

A methodology for characterizing phase noise in modulated radar waveforms: an alternative 'terrain' characterization method

John Gray, Stephen Addison

Proceedings Volume 5410, (2004) https://doi.org/10.1117/12.543139

KEYWORDS: Radar, Modulation, Scattering, Interference (communication), Fourier transforms, Backscatter, Electromagnetic scattering theory, Remote sensing, Sensors, Statistical analysis

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Proceedings Article | 27 July 2004 Paper

On the performance and consistency of a noninteractive multiple-model filter

Ali Alouani, John Gray

Proceedings Volume 5430, (2004) https://doi.org/10.1117/12.543142

KEYWORDS: Performance modeling, Motion models, Coastal modeling, Sensors, Information operations, Erbium, Electronic filtering, Switching, Matrices, Systems modeling

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Proceedings Article | 27 July 2004 Paper

A methodology for adaptive scheduling of radar intervals based on a cost-function methodology

John Gray, Amy Smith-Carroll, Christopher Zaffram

Proceedings Volume 5430, (2004) https://doi.org/10.1117/12.543307

KEYWORDS: Radar, Sensors, Weapons, Denoising, Filtering (signal processing), Electronic filtering, Environmental sensing, Telecommunications, Distributed computing, Warfare

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Proceedings Article | 5 January 2004 Paper

Are there thermodynamic variables for networked sensor systems?

John Gray, Amy Smith-Carroll

Proceedings Volume 5204, (2004) https://doi.org/10.1117/12.507907

KEYWORDS: Sensors, Sensor networks, Telecommunications, Control systems, Complex systems, Systems modeling, Surveillance, Thermodynamics, Data processing, Sensor performance

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Proceedings Article | 5 January 2004 Paper

Unresolved target detection: a detailed case study of a particular technique assuming incorrect calibration

Denis McCabe, Amy Smith-Carroll, John Gray

Proceedings Volume 5204, (2004) https://doi.org/10.1117/12.503477

KEYWORDS: Target detection, Calibration, Radar, Infrared search and track, Silicon, Sensors, Palladium, Signal processing, Infrared sensors, Detection and tracking algorithms

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Proceedings Article | 25 August 2003 Paper

Performance evaluation of an asynchronous multisensor track fusion filter

Ali Alouani, John Gray, D. McCabe

Proceedings Volume 5096, (2003) https://doi.org/10.1117/12.487537

KEYWORDS: Sensors, Filtering (signal processing), Monte Carlo methods, Electronic filtering, Data processing, Sensor fusion, Time metrology, Error analysis, Data fusion, 3D acquisition

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Proceedings Article | 4 August 2003 Paper

A noninteractive multiple model tracker

Ali Alouani, John Gray

Proceedings Volume 5082, (2003) https://doi.org/10.1117/12.488010

KEYWORDS: Electronic filtering, Switching, Motion models, Sensors, Performance modeling, Coastal modeling, Switches, Matrices, Systems modeling, Target detection

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Proceedings Article | 1 April 2003 Paper

The effect of nonuniform motion on the Doppler spectrum of scattered continuous-wave waveforms

John Gray, Stephen Addison

Proceedings Volume 5102, (2003) https://doi.org/10.1117/12.484816

KEYWORDS: Lithium, Doppler effect, Radar, Continuous wave operation, Lutetium, Electromagnetism, Physics, Motion analysis, Independent component analysis, Wavelets

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Proceedings Article | 7 August 2002 Paper

Unresolved target detection: detailed case study of a particular technique assuming correct calibration

Denis McCabe, Amy Smith-Carroll, John Gray

Proceedings Volume 4728, (2002) https://doi.org/10.1117/12.478494

KEYWORDS: Target detection, Radar, Silicon, Calibration, Signal to noise ratio, Detection and tracking algorithms, Sensors, Infrared search and track, Warfare, Signal processing

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Proceedings Article | 7 August 2002 Paper

Tracking with three asynchronous sensors: solution existence and performance analysis

Ali Alouani, John Gray, Denis McCabe

Proceedings Volume 4728, (2002) https://doi.org/10.1117/12.478518

KEYWORDS: Sensors, Data processing, Data communications, Data fusion, Filtering (signal processing), Target recognition, Error analysis, Computing systems, Sensor fusion, Data centers

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Proceedings Article | 7 August 2002 Paper

Network-centric warfare paradigm: primacy of estimation, tracking, and data fusion algorithms for the implementation of this vision

John Gray, Amy Smith-Carroll, Denis McCabe, William Murray, Ali Alouani

Proceedings Volume 4728, (2002) https://doi.org/10.1117/12.478515

KEYWORDS: Lithium, Detection and tracking algorithms, Filtering (signal processing), Data analysis, Lutetium, Data processing, Network centric warfare, Data fusion, Signal processing, Information operations

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Proceedings Article | 1 July 2002 Paper

Tracking with two asynchronous sensors: solution existence and performance analysis

John Gray, Denis McCabe, Ali Alouani

Proceedings Volume 4714, (2002) https://doi.org/10.1117/12.472588

KEYWORDS: Sensors, Data communications, Data processing, Data fusion, Filtering (signal processing), Target recognition, Data centers, Error analysis, Computing systems, Sensor fusion

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Proceedings Article | 26 November 2001 Paper

Tracking with asynchronous multiple sensors

John Gray, Denis McCabe, Ali Alouani

Proceedings Volume 4473, (2001) https://doi.org/10.1117/12.492748

KEYWORDS: Filtering (signal processing), Lithium, Sensors, Silicon, Zinc, Lutetium, Electronic filtering, Data communications, Signal processing, Data processing

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Proceedings Article | 21 August 2001 Paper

Tracking with asynchronous multiple sensors

Ali Alouani, John Gray, Gregory Watson

Proceedings Volume 4365, (2001) https://doi.org/10.1117/12.438040

KEYWORDS: Sensors, Data communications, Monte Carlo methods, Data processing, Data fusion, Matrices, Error analysis, Computing systems, Target recognition, Sensor fusion

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Proceedings Article | 1 September 1990 Paper

Nonlinear optical processing with amorphous silicon, ferrolectric liquid-crystal spatial light modulators

Nicholas Caviris, John Gray, Sonlinh Phuvan, Theodore Rice

Proceedings Volume 1296, (1990) https://doi.org/10.1117/12.21253

KEYWORDS: Spatial light modulators, Optical signal processing, Transmittance, Transformers, Amorphous silicon, Fourier transforms, Signal processing, Liquid crystals, Spatial filters, Transparent conductors

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Showing 5 of 39 publications

Conference Committee Involvement (20)

Radar Sensor Technology XXIV

27 April 2020 | Online Only, California, United States

Radar Sensor Technology XXIII

15 April 2019 | Baltimore, MD, United States

Radar Sensor Technology XXII

16 April 2018 | Orlando, FL, United States

Radar Sensor Technology XXI

10 April 2017 | Anaheim, CA, United States

Radar Sensor Technology XX

18 April 2016 | Baltimore, MD, United States

Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering IX

27 April 2011 | Orlando, Florida, United States

Radar Sensor Technology XV

25 April 2011 | Orlando, Florida, United States

Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV

5 April 2010 | Orlando, Florida, United States

Radar Sensor Technology XIV

5 April 2010 | Orlando, Florida, United States

Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIII

14 April 2009 | Orlando, Florida, United States

Radar Sensor Technology XIII

13 April 2009 | Orlando, Florida, United States

Acquisition, Tracking, Pointing, and Laser Systems Technologies XXII

20 March 2008 | Orlando, Florida, United States

Radar Sensor Technology XII

18 March 2008 | Orlando, Florida, United States

Radar Sensor Technology XI

12 April 2007 | Orlando, Florida, United States

Acquisition, Tracking, Pointing, and Laser Systems Technologies XXI

9 April 2007 | Orlando, Florida, United States

Radar Sensor Technology X

20 April 2006 | Orlando (Kissimmee), Florida, United States

Acquisition, Tracking, and Pointing XX

18 April 2006 | Orlando (Kissimmee), Florida, United States

Radar Sensor Technology IX

31 March 2005 | Orlando, Florida, United States

Acquisition, Tracking, and Pointing XIX

29 March 2005 | Orlando, Florida, United States

Radar Sensor Technology VIII

15 April 2004 | Orlando, Florida, United States

Showing 5 of 20 Conference Committees

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