Grybos

DAVID GRYBOS, Ph.D.

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Previous SCI/EBI, DoD Top Secret Clearance

Education

Ph.D. Electrical Engineering, Purdue University, August 1980

M.S. Electrical Engineering, Purdue University, December 1977

B.S.E. Electrical Engineering, University of Michigan-Dearborn, June 1976

Professional Experience

Retired, September 2018-Present

Ham Radio; Electronics, Antenna, Stereo Projects; VW Beetle EV Conversion

Consultant, SpaceLink Corporation, September 2020– June 2022

Definition of the entire Space-Ground System Architecture;
Writing the initial System Level and Satellite Specifications;
Defined security requirements
Defined a recommended network architecture and partitioning for operational and cyber security;
Defined the System Engineering processes, document tree, requirements allocation methods;
Reviewed potential technologies and contractors.
Advised the CEO, CTO, and senior management on organizational issues and personnel selection.

Chief Scientist, Systems, Space Systems/Loral, February 2001– September 2018

Lead National Programs architecture, system engineering and technology development activities.
Evaluate emerging commercial applications and services and identify the implications on the evolution of current and future system, network and satellite architectures.
Track and maintain a working knowledge of current, emerging and competitive satellite-based, terrestrial wired and wireless system, network technologies.
Create candidate system, network and satellite architectures to support broadband satellite technology road-map activities.
Provide an industry leadership role in establishing future trends, technologies and service trends, and identify and support business opportunities for Loral Space & Communications.
Support the definition and update of an advanced systems and broadband satellite technology roadmap.
Establish and maintain an accurate working knowledge of prospective suppliers and their products.
Define required advanced development activities and R&D priorities.
Provide System Engineering oversight and management of on-going advanced development projects.
Representative and Co-chair of the Loral Advanced Systems Working Group.
Support activities with the international standards organizations related to broadband communications
Provide customer system, network and satellite architecture design and development support for strategic and sales, marketing activities.

Chief Scientist, Broadband Systems Development, Loral Space & Communications, July 2000 - February 2001

Chief Technology Officer (CTO), Architect and Acting Vice President (VP) of Systems Engineering for the Loral Broadband Multimedia Services (BMS) System.
Creator of initial Loral broadband services system architecture
Led detailed development Loral broadband services system architecture including: Consumer Premises Equipment, Gateways, Wide Area Network (WAN), Internet Access Segments and multi-beam Ka-band satellites.
Key contributor to definition of Internet Service Provider (ISP) service strategy.
Initiated Broadband over Satellite Standards and protocol stack enhancement activities to provide increased Broadband Internet system capacity and quality of service
Defined Loral broadband service offering roadmap.
Chaired ISP advisor working group.
Formed BMS System Engineering and Network design organization.
Led formulation of BMS development plan including
Led technical negotiations with US and international consumer manufacturing and technology providers.
Chaired BMS Configuration Control Board. Led all specification, ICD and technical documentation activities.

Chief Scientist, Advanced Systems, Space Systems/Loral, October 1996 – July 2000

Conceived Loral broadband technology development roadmap including focus on multi-beam Internet Access Systems.
Advanced satellite system concept development.
On-board processing architecture and technology definition
System design and communication analysis-simulation tool definition and implementation.
Proposal preparation.

Vice President, Electronic Systems, Deskin Research Group, July 1993 - October 1996

Chief Engineer and program manager for Leo One USA, a second round Little Leo applicant. Created satellite and payload point design including all subsystems (payload, power, structural, etc.). Defined network operational concepts. Created system development cost model. Identified vendor component candidates. Technical support to regulatory effort. Formulated regulatory strategies.
Defined multi-mission small satellite bus concept.
Established small satellite electronics box line-of-business. Program manager, system engineer and architect for Orbcomm Avionics Box, Microlab Payload Interface Computer-Experiment Interface Unit. Led design, manufacturing and acceptance testing of flight computer, attitude control electronics hardware and interface software.
Responsible for Teledesic Payload definition, directing all payload architecture and technology trades. Defined advanced system engineering procedures for Teledesic development. Supported regulatory activities.
Coordinated successful Forte battery proposal, defined battery specifications and test plans/procedures.
Established company System Engineering procedures.
Performed digital audio broadcasting waveform design audit. Defining system performance requirements and defining improved waveform candidates.
Lead subcontract for advanced MILSATCOM EHF packet switch development proposal.

Senior Member of Technical Staff, Deskin Research Group, October 1991-July 1993

Project 1057 Small Satellite program Chief System Engineer. Responsible for system engineering integration and test procedures based on tailored Mil-Std's for cost effective satellite and payload integration and test. Directed formal acceptance testing and Flight Readiness Review. Personally conducted tests and resolved Engineering Model anomaly. Directed battery thermal and vibe anomaly testing. Defined energy balance solar simulator testing. Resolved communication system performance impact of antenna pattern asymmetries.
Defined advanced small satellite mission concepts.
Formulated space qualification program for hard disk drive for mass storage.

Senior Staff Engineer, TRW Systems Engineering Laboratory, December 1988 - October 1991

Chief System Engineer for the MILSTAR MDR Payload. Included definition of physical layer and access protocol standards. Helped establish joint TRW-HAC cooperative program management methods and served as payload steering committee system engineering director.
Chief System Engineer for the Advanced Multi-mission Subsystem (AMS) MMIC technology program that is now included on multiple programs of national importance.
Lead System Engineer for numerous advanced studies, IR&D activities and proposals involving customer contact and technology development.
Led study for DSCS follow-on EHF Payload B definition.
Led Project 4885, System Enhancement Study and was technical lead for Project 4056, Advanced System Studies.
Program/proposal Red-Team reviewer.

Senior Staff Engineer, TRW Systems Engineering Laboratory, May 1987 - December 1988

Assistant Project Manager for System Engineering, Project 3216. Project 3216 was an on-board processing, routing and switching satellite communications system. Responsible for all system requirements definition, analysis and customer interaction for the requirements definition and development phase of an advanced processing-switching communication payload. Supervised three subproject managers and their staff. Participated in Monthly reviews for Division vice-president.

Senior Staff Engineer, TRW Systems Engineering Laboratory, September 1986 - May 1987

Responsible for the definition and supervision of communications and signal processing analysis tasks.
Manager and performer on funded studies and IR&D.
Supported project analyses and performed internal consulting.

Staff Engineer, TRW Satellite Systems Engineering Department, July 1983 - September 1986

Subproject Manager for System Analysis, MILSTAR LDR Payload Program.
Defined and directed analysis of the payload in jamming and scintillation environments. Defined end-to-end system requirements. Technical interface to LMSC and USAF.
Conceived and directed development of SIMSTAR, a payload simulation tool. Responsible for system engineering and test of the LDR Payload single thread breadboard. Procured VAX/array-processor computer, coordinated facilities, security and operations.
Performed costing, scheduling, re-planning and proposals. Directed six engineers and two computer support personnel.

Member of Technical Staff, TRW Communications Analysis Department, October 1980 - July 1983

Key contributor to MILSTAR architecture definition and proposal.
System analysis and system engineering for TDRSS and AFSATCOM.

Instructor, Loyola Marymount University, Spring 1982 - Spring 1990

Taught graduate courses in Spread Spectrum Systems, Error Correction Codes, Digital Satellite Communications and Detection and Estimation Theory.

Teaching, Research Assistant, Purdue University, June 1976 - August 1980

Research in spread-spectrum and non-parametric detection theory.
Taught undergraduate communications laboratory.

Awards

TRW ESG nominee for the 1988 Chairman's Award for Innovation.

Publications

Numerous Classified and Proprietary reports. Plus the following:

"Emerging Technologies and Dual-Use Aplications for the Commercial and Government Sectors", AIAA ICSSC 9-12 May 2004, 2004-3120, D. Grybos, W. Nations, E. Butte, G. van Ommering,

"The Data Satellite – How to Integrate Into a Hybrid Communications Network?", IAF-99-M.5.02, C. Hoeber, D. Grybos, W. Nations

"Multi-Beam SATELLITE SYSTEM EVOLUTION, A Perspective on the Evolution of Communication Satellite Systems" IAF-98-M.5.03, C. Hoeber, D. Grybos, W. Nations, R. Tyner

"Technology for the Future Marketplace, A Perspective on Ka and On-Board Processing Technology" IEE Advanced Satellite Systems, Electronics & Communications Division, 13-14 Oct ‘98, London, UK, D. Grybos, W. Nations

"Cellular Land-Mobile Radio: Why Spread Spectrum?" (with G. R. Cooper and R. W. Nettleton) IEEE Communications Magazine, Vol. 17, No. 2, March 1979.

"A Receiver Feasibility Study for the Spread Spectrum High Capacity Mobile Radio System" (with G. R. Cooper) Record of the 28th IEEE Vehicular Technology Conference, March 22-24, 1978, Denver, CO.

"Probability of Error Performance of the Spread Spectrum Mobile Communications Receiver in a Non-Rayleigh Fading Environment" (with G. R. Cooper and R. W. Nettleton) Record of the 29th IEEE Vehicular Technology Conference, March 28-30, 1979, Arlington Heights, IL.

"Locally Optimum Rank Detectors for Fading Signals" (with G. R. Cooper) Record of the 14th Conference on Information Sciences and Systems, 1979, Princeton, NJ.

Thesis

"Nonparametric Detectors with Applications to Spread Spectrum", Purdue University, Advisor: G. R. Cooper.

Patents

"Demodulator Unit for Spread Spectrum Apparatus Utilized in a Cellular Mobile Communications System" U. S. Patent No. 4,189,677.

“Radio Frequency Sharing Methods for Satellite Systems” U. S. Patent No. 5,926,758

"Multi-Band Concentric Helical Antenna" U. S. Patent No. 5,986,619

"CDMA code address data routing system and method" U. S. Patent No. 6,725,277

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