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David Akopian

age ~60

from San Antonio, TX

Also known as:
  • David A Kopian
  • Dave Akopian
  • David Akopain

David Akopian Phones & Addresses

  • San Antonio, TX
  • Austin, TX
  • 11522 Brae Hl, San Antonio, TX 78249 • 210 767-0488

Work

  • Company:
    The university of texas at san antonio
    Dec 2008
  • Position:
    Associate professor

Education

  • Degree:
    PhD
  • School / High School:
    Tampereen teknillinen korkeakoulu
    1994 to 1997
  • Specialities:
    DSP systems for Communications

Skills

Signal Processing • Algorithms • Matlab • Wireless • Mobile Communications • Latex • Simulations • Machine Learning • Statistics • Research • Image Processing • C++ • Teaching • C • Digital Signal Processors • Pattern Recognition • Programming • Data Analysis • Computer Science • Java • Physics • Computer Vision • Project Management • Sensors • Program Management • Wireless Technologies

Interests

Advanced Gps Receivers • New Technology • Systems For Education • Student Job Inquiries

Industries

Higher Education

Resumes

David Akopian Photo 1

Associate Dean Of Research, College Of Engineering

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Location:
San Antonio, TX
Industry:
Higher Education
Work:
The University of Texas at San Antonio since Dec 2008
Associate Professor

University of Texas at San Antonio Oct 2003 - Dec 2008
Assistant Professor

Nokia Apr 1999 - Oct 2003
Senior Scientist

Tampere University of Technology Nov 1993 - 1999
Researcher, then Senior Researcher, then Coordinator of Tampere Int Centre on Signal Processing

IPIA 1988 - 1991
Researcher
Education:
Tampereen teknillinen korkeakoulu 1994 - 1997
PhD, DSP systems for Communications
Moscow Institute of Physics and Technology (State University) (MIPT) 1981 - 1987
MS, Radiophysics and Cybernetics
Moscow Institute of Physics and Technology (State University) (MIPT) 1981 - 1987
MS, Radioelectronics
Physics & Mathematics Charter school of Yerevan State University
Skills:
Signal Processing
Algorithms
Matlab
Wireless
Mobile Communications
Latex
Simulations
Machine Learning
Statistics
Research
Image Processing
C++
Teaching
C
Digital Signal Processors
Pattern Recognition
Programming
Data Analysis
Computer Science
Java
Physics
Computer Vision
Project Management
Sensors
Program Management
Wireless Technologies
Interests:
Advanced Gps Receivers
New Technology
Systems For Education
Student Job Inquiries

Us Patents

  • Methods And Systems For Digital Image Security

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  • US Patent:
    8369568, Feb 5, 2013
  • Filed:
    May 27, 2011
  • Appl. No.:
    13/134062
  • Inventors:
    Sos S. Agaian - San Antonio TX, US
    David Akopian - San Antonio TX, US
    Ravindranath C. Cherukuri - San Antonio TX, US
    Juan Pablo Perez - North Las Vegas NV, US
    Benjamin M. Rodriguez - Beavercreek OH, US
  • Assignee:
    The Board of Regents of The University of Texas System - Austin TX
  • International Classification:
    G06K 9/00
  • US Classification:
    382100
  • Abstract:
    Methods and systems for securing digital imagery are provided. In one respect, embedding, compression, encryption, data hiding, and other imaging processing techniques and systems may be provided for digital image security. In one non-limiting example, a method for producing a compressed and encrypted image is provided. An image may be converted into a binary bit stream, and the bit stream may be decomposed into a plurality of segments. A binary sequence based on a first key may be generated and may be used to generate a code matrix. A distance between the code matrix and the distance may be determined for each of the plurality of segments. Using a combined first and second key, a compressed and encrypted image may be obtained.
  • Crosscorrelation Interference Mitigating Position Estimation Systems And Methods Therefor

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  • US Patent:
    8548106, Oct 1, 2013
  • Filed:
    Sep 23, 2009
  • Appl. No.:
    12/565434
  • Inventors:
    Catalin Lacatus - South Brunswick NJ, US
    David Akopian - San Antonio TX, US
    Mehdi Shadaram - San Antonio TX, US
  • Assignee:
    Board of Regents, The University of Texas System - Austin TX
  • International Classification:
    H04L 25/08
    H04B 1/00
  • US Classification:
    375346, 375130
  • Abstract:
    Provided is a method that includes dynamically adjusting a GPS signature code to minimize the interference (e. g. , the cross-correlation interference) experienced due to one or more other GPS signals. Further provided is a method that includes adjusting the complexity of an adaptive solution to reduce the time and processing power associated with tracking a GPS signal.
  • Methods And Systems For Digital Image Security

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  • US Patent:
    20080130883, Jun 5, 2008
  • Filed:
    Apr 26, 2007
  • Appl. No.:
    11/740742
  • Inventors:
    Sos S. Agaian - San Antonio TX, US
    David Akopian - San Antonio TX, US
    Ravindranath C. Cherukuri - San Antonio TX, US
    Juan Pablo Perez - North Las Vegas NV, US
    Benjamin M. Rodriguez - Beavercreek OH, US
    Ronnie R. Sifuentes - San Antonio TX, US
  • International Classification:
    G09C 5/00
    G06K 9/00
  • US Classification:
    380 54, 382100
  • Abstract:
    Methods and systems for securing digital imagery are provided. In one respect, embedding, compression, encryption, data hiding, and other imaging processing techniques and systems may be provided for digital image security. In one non-limiting example, a method for producing a compressed and encrypted image is provided. An image may be converted into a binary bit stream, and the bit stream may be decomposed into a plurality of segments. A binary sequence based on a first key may be generated and may be used to generate a code matrix. A distance between the code matrix and the distance may be determined for each of the plurality of segments. Using a combined first and second key, a compressed and encrypted image may be obtained.
  • Remote Laboratory Gateway

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  • US Patent:
    20130117019, May 9, 2013
  • Filed:
    Nov 7, 2011
  • Appl. No.:
    13/291065
  • Inventors:
    David Akopian - San Antonio TX, US
    Arsen Melkonyan - San Antonio TX, US
    Murillo Pontual - San Antonio TX, US
    Grant Huang - San Antonio TX, US
    Andreas Robert Gampe - San Antonio TX, US
  • International Classification:
    H04L 12/56
    G10L 13/00
    G10L 15/26
    G06F 15/16
  • US Classification:
    704235, 370394, 709204, 704260, 704E13001, 704E15043
  • Abstract:
    A remote laboratory gateway enables a plurality of students to access and control a laboratory experiment remotely. Access is provided by an experimentation gateway, which is configured to provide secure access to the experiment via a network-centric, web-enabled interface graphical user interface. Experimental hardware is directly controlled by an experiment controller, which is communicatively coupled to the experimentation gateway and which may be a software application, a standalone computing device, or a virtual machine hosted on the experimentation gateway. The remote laboratory of the present specification may be configured for a software-as-a-service business model.
  • System And Method For Global Navigation Satellite System (Gnss) Spoofing Detection

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  • US Patent:
    20220357460, Nov 10, 2022
  • Filed:
    Apr 27, 2022
  • Appl. No.:
    17/730936
  • Inventors:
    - Austin TX, US
    David Akopian - San Antonio TX, US
    Nikolaos Gatsis - San Antonio TX, US
  • International Classification:
    G01S 19/21
  • Abstract:
    A global navigation satellite system (GNSS) spoofing detection and classification technique is provided. An optimization problem is formulated at the baseband correlator domain by using an optimization algorithm such as the Least Absolute Shrinkage and Selection Operator (LASSO) algorithm, for example. A model of correlator tap outputs of the intended received signal is created to form a dictionary of pre-computed waveform functions (e.g., triangle-like-shaped functions). Sparse signal processing can be leveraged to choose a decomposition of pre-computed waveform functions from the dictionary. The optimal solution of this minimization problem can discriminate the presence of a potential spoofing attack peak by observing the decomposition of two different code-phase values (authentic and spoofed) in a sparse vector output. A threshold can be used to mitigate false alarms. Furthermore, a variation of the minimization problem can be provided that enhances the dictionary to a higher resolution.
  • Systems, Methods, And Computer Programs For Wireless Local Area Network Localization

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  • US Patent:
    20200204275, Jun 25, 2020
  • Filed:
    Nov 26, 2019
  • Appl. No.:
    16/695469
  • Inventors:
    Nikolaos Gatsis - San Antonio TX, US
    David Akopian - San Antonio TX, US
  • Assignee:
    Boards of Regents, The University of Texas System - Austin TX
  • International Classification:
    H04B 17/27
    G01S 5/02
    H04W 24/10
    G01S 5/14
    H04B 17/318
    H04B 17/24
    H04B 17/391
  • Abstract:
    Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.
  • Method And System For Detecting And Mitigating Time Synchronization Attacks Of Global Positioning System (Gps) Receivers

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  • US Patent:
    20190187294, Jun 20, 2019
  • Filed:
    Dec 20, 2018
  • Appl. No.:
    16/227744
  • Inventors:
    Nikolaos Gatsis - San Antonio TX, US
    David Akopian - San Antonio TX, US
    Ahmad Fayez Taha - San Antonio TX, US
  • Assignee:
    Board of Regents, The University of Texas System - Austin TX
  • International Classification:
    G01S 19/21
    G01S 19/25
  • Abstract:
    A system and method are provided for detecting and estimating time synchronization attacks (TSAs) on Global Positioning System (GPS) receivers. The system and method can be implemented to address gaps in the known or proposed TSA detection solutions. In particular, the system and method can be implemented to provide a TSA countermeasure solution that: 1) provides a comprehensive countermeasure against different types of TSAs; 2) allows the GPS receiver to continue its normal operation, which is especially beneficial in Phasor Measurement Unit (PMU) applications where the network's normal operation cannot be interrupted; in other words, the solution not only detects TSAs, but also mitigates their effects so that the network can continue its normal operation; and 3) is relatively simple and capable of being integrated with current GPS receivers without having to alter the circuitry of the GSP receivers.
  • Systems, Methods, And Computer Programs For Wireless Local Area Network Localization

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  • US Patent:
    20180123708, May 3, 2018
  • Filed:
    Oct 16, 2017
  • Appl. No.:
    15/784287
  • Inventors:
    Nikolaos Gatsis - San Antonio TX, US
    David Akopian - San Antonio TX, US
  • Assignee:
    Board of Regents, The University of Texas System - Austin TX
  • International Classification:
    H04B 17/27
    H04B 17/24
    H04B 17/318
    G01S 5/02
    G01S 5/14
    H04W 24/10
  • Abstract:
    Disclosed are various embodiments that enable the identification of the location of a computing device based on radio data. A radio map can be identified for an area. The computing device can measure signal strengths to reference points. The signal strengths can be compared to the radio map. The computing device can determine its location based on the comparison of the signal strengths to the radio map.

Vehicle Records

  • David Akopian

    view source
  • Address:
    11522 Brae Hl, San Antonio, TX 78249
  • VIN:
    4T1BE46K87U548594
  • Make:
    TOYOTA
  • Model:
    CAMRY
  • Year:
    2007

Googleplus

David Akopian Photo 2

David Akopian

Facebook

David Akopian Photo 3

David Akopian

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Friends:
Matt Thornton, Doug Henningsen, Armen Akopians

Youtube

David Akopian - Mozart - Violin Concerto No. 3

David Akopian - Mozart - Violin Concerto No. 3 11 years old

  • Category:
    Music
  • Uploaded:
    11 Nov, 2010
  • Duration:
    10m 26s

David Akopian & Milena Jalalbekova - Albinoni...

David Akopian & Milena Jalalbekova - Albinoni: Adagio

  • Category:
    Music
  • Uploaded:
    11 Jul, 2009
  • Duration:
    5m 47s

David Akopian-Vivaldi: La Stravaganza (Part 2...

David Akopian - Vivaldi: La Stravaganza (Part 2 - 3)

  • Category:
    Music
  • Uploaded:
    03 Jul, 2009
  • Duration:
    7m 40s

David Akopian-Fritz Kreisler: Prelude & Allegro

David Akopian-Fritz Kreisler: Prelude & Allegro (10 years old)

  • Category:
    Music
  • Uploaded:
    11 Jul, 2009
  • Duration:
    9m 2s

David Akopian - Mendelson (concert in e minor)

David Akopian - Mendelson (concert in e minor) - 14 years old Tbilisi,...

  • Duration:
    14m 8s

Bazzini - La ronde des lutins (David Akopian)

Music.

  • Duration:
    5m 35s

Bazzini - la ronde des lutins (David Akopian)

Classical music.

  • Duration:
    6m 50s

David Akopian & Milena Jalalbekova - Albinon...

David Akopian & Milena Jalalbekova - Albinoni: Adagio.

  • Duration:
    5m 48s

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