Design Engineer Systems
Resume:
RESUME
David Hartman
San Antonio, TX 78254
david. hartman4 @aol.com
SUMMARY
A design/systems engineer with over 30 years experience in guidance, navigation, and control systems and data science. Strong analytical and problem solving ability. Able to formulate and solve complex problems and follow through implementation and test. Extensive experience in simulation and accuracy analysis of GPS/INS navigation systems, Kalman Filtering, and strap down navigation algorithms. Extensive experience in missile guidance and flight control systems, software integration and test, and flight test analysis. Test work involved extensive analysis and handling of real data. Experience with optimization algorithms used in Machine learning including Mixed Integer Linear Programming and Dynamic Programming. Worked remotely for Emergent Space and Def-Logix employers.
PROFESSIONAL EXPERIENCE
Emergent Space Technologies Laurel, Maryland 08/2021 – 04/2022 Contractor to NASA thru Jacobs Engineering
Space Navigation Engineer
Worked on developing models for ascent phase navigation verification for Boeing and SpaceX vehicles for Commercial Crew Program
Worked with Lunar ephemeris to develop requirements for communications to Gateway vehicle
Reviewed various system requirements documents and change requests for Gateway Program
Def-Logix San Antonio Texas 06/03/2019 – 12/30/2020 Math Subject Matter Expert
Design, Test, and Verification of algorithms used for computer network analysis
Developed Mixed Integer Linear Programming algorithms for network fragmentation and optimal ex-filtration of data
Developed Dynamic Programming Algorithms for critical network nodes problem
Analyzed time series data with ARMA models for network traffic modeling
Collected and analyzed network data with several sniffer programs Raytheon Fullerton, CA 09/012015 05/20/2019
Principal Systems Engineer
Design, Test, and Verification of JPALS Differential GPS Landing System
Added new features to RAIM algorithm for rising satellites first seen at invisible points where satellite position error is normal to LOS to satellite
Performed system analysis on data link for F35 aircraft using JPALS
Analyzed numerical properties of GPS/INS Kalman Filter
Performed analysis on several integrity monitors Composite Engineering Roseville, CA 11/01/2009 07/08/2015 Systems Engineer IV
Served as systems/software engineer on several target drone programs
development of MSST flight control algorithms
Design of Tow Break Controller including Simulink modeling of hardware
Design and Test of Composite Engineering GPS/INS System Alliant Tech, Woodland Hills, California 09/15/2000–08/20/2009 Senior Engineer
Served as design engineer on AARGM, PGMM, and MSST programs.
Designed preliminary version of alignment Kalman Filter for AARGM missile. Used both GPS and aircraft transfer alignment measurements.
Led selection of GPS receiver for AARGM which operated successfully in flight tests.
Conceived and implemented guidance Kalman Filter for PGMM mortar shell which performed successfully in flight tests
Performed autopilot analysis including flexible body motion on MSST target. Revised and tested autopilot design which functioned well in 6 DOF simulations COMPUTER SKILLS:
Matlab/Simulink, C, C++, FORTRAN, some Python
EDUCATION
MS. Engineering Systems, University of California, Los Angeles 1981 B.S. Electrical Engineering, University of Texas, Austin 1976 PUBLICATIONS
“Sequential Processing of Integrated Measurements in a Generalized Kalman Filter”, Proceedings of ION Technical Meeting, San Diego, California, January 2002.
“New Kalman Filter Formulation for GPS Delta Pseudo Range Processing”, Proceedings of GPS-ION 98 Conference, Nashville, Tenn. September 1998.
“Robust Implementation of GPS Relative Guidance”, Proceedings of ION GPS Conference, Palm Springs, California, 1995.
PATENT
“FLIR Alignment System”, 1996 for Hughes Aircraft
SECURITY CLEARANCE
Have active Top Secret Clearance
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