| Summary |
Twelve years industrial experience in software
development. M.S. in Electrical Engineering with Computer Science
minor. |
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| Skills |
| Specialty: |
Design, code, optimization, and unit and
integration test of real-time embedded software. |
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| Languages: |
| C and C++ |
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Borland Turbo C++, Gnu gcc, Microsoft
Visual C++. |
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| Ada |
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Rational Apex, TLD, Verdix, Gnu Gnat.
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| assembly |
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Intel 8051 (Keil), 1750A (TLD),
Motorola 6800, 6809. |
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| Unix tools |
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sed, awk/gawk, sh, grep, etc. |
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| OS's: |
Unix (SunOs, Linux, Solaris), DOS, Windows, X
Windows. |
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| Equipment: |
Logic analyzers, SBS and Ballard 1553
analyzers, oscilloscopes, EPROM burners, Federal Systems' ASPS
and CCP flight computers, etc. |
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| Experience |
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Responsible for design, code, real-time optimization,
unit test, troubleshooting, patching, and documentation of satellite
flight software for various applications on Loral's FS-1300 series of
satellites, using Ada (Rational Apex, TLD 1750, and Verdix compilers
under Unix), assembly (8051 and 1750A), C, and Unix toolscripts.
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Projects included: |
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- Coded all 8051 firmware on 1553-to-RS-485 command/telemetry hub
for Satmex-6 and ipStar; sole 8051 firmware engineer on this
project. The 8051 is an 8-bit microcontroller, and the variant used
had 256 bytes of RAM.
- Coded and unit tested with Keil compiler/assembler, integrated
and tested on lab hardware, hand-optimized for time and space, and
verified worst-case timing with oscilloscope.
- 8K lines of flight code and 14K lines of test code, most of it in
8051 assembly and the rest in C. Documentation set (SRS, SDD, VDD)
in Microsoft Word (2000-2002).
- Major upgrades for Intelsat-IX telemetry and solar array drive
software, including telemetry changes to accommodate splitting of
flight computer.
- Tested on simulators and hardware targets; advised/troubleshot
integration test at satellite manufacturing level. Advised
engineers, testers, and customer on telemetry, software
environment, and test equipment.
- Supported later programs that were based on Intelsat-IX design
(1996-2002).
- Major upgrades for MTSAT attitude control software (1996-1998).
- Updates to command software for Tempo, Panamsat-6,
Mabuhay/Telstar/Apstar, and Intelsat-IX (1995-1996).
- Updates to attitude control software for Chinasat-8, MCI-2,
Telstar-7, Eurostar, MTSAT-1R, etc. (1996-2002).
- Development of code generators, code patch tools, and many other
Unix toolscripts, using shell, awk, and sed scripts, including:
- A coverage analyzer that merged 8051 simulator address trace
output with 8051 flight build disassembly listings and used
unit and integration tests for inputs. Modified a copy of the
freeware 8051 simulator s51 (built with gcc and run under
Unix), to obtain address trace information.
- Pre- and post-processors for the Rational Apex Ada coverage
analyzer, to permit using unit and integration test scripts as
input data to the analyzer and to merge Apex coverage analyzer
output with Ada source listings. Merged coverage analyses for
all Intelsat-IX flight software applications.
- An instruction trace tool that merged logic analyzer address
bus trace output with disassembled 1750A flight build, to
pinpoint cause of spontaneous reboots that were occurring once
every few months in the satellite assembly area (the cause was
a hardware error in vendor's flight computer, missed by their
testing).
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Performed design, code, unit test, and integration test
of simulation software used for astronaut training, for the following
projects: |
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- NASA Space Station
Training Facility (SSTF), subcontracted to Hughes-Link
(1/1993-10/1993, 6/1994-11/1995).
- As part of the Onboard
Computer Systems (OBCS) working group, designed, coded, and
tested several class objects for the firmware controller 1553
interface in the simulation of the Station's 1553 network;
integration tested on SGI Challenge targets (including 1553 bus
analysis).
- Satellite Ground Station
Training System, Booz • Allen & Hamilton
(2/1994-7/1994).
- Ported satellite operations manual to real-time C for training
model of customer's satellite, including sensor, controller, and
actuator models.
- NASA
Shuttle Mission Training Facility (SMTF) , subcontracted
to CAE-Link (7/1992-1/1993).
- PDR design for training model of the entire Space Station Data
Management System, to be run on the Shuttle Mission Simulator,
including all on-orbit computers and networks. Also coded and ran
filters for comparing actual Shuttle robotic arm data vs. training
simulator models, with Turbo C++.
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Updated customer service dialogs, etc., in Bridgeway's
corporate secretary database products, with Microsoft Visual C++,
Windows SDK, and Borland Paradox Engine. |
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| Education |
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| References |
Available upon request. |