ROBERT WILLIAM GRESCHKE
906 School of Mines Rd, Apt 11
Socorro, New Mexico USA 87801
* 8 years in the Naval Nuclear Power Program (September 1977-October 1985). Primarily trained as an electrical operator.
This involved the control, monitoring, and repair of various types of electrical generation/conversion equipment and their associated electronic control systems, electrical distribution equipment, atmosphere control equipment, and propulsion plant/ship systems auxiliary equipment. During this time I held a secret security clearance.
* 5 1/2 years assigned to the USS Ohio-SSBN 726 (first Trident class ballistic missile submarine).
Participated in initial ship, reactor plant, and propulsion plant construction and testing (January 1980-August 1982). Completed 5 operational patrol cycles (August 1982-May 1985). Performed the duties of a divisional level manager during both administrative and overhaul/at sea periods (January 1984-May 1985).
* Assigned to the USS Pargo-SSN 650 (May 1985-October 1985).
Worked as the administrative assistant to the engineering department head. The ship was undergoing a non-refueling overhaul at the Puget Sound Naval Shipyard, Bremerton, Washington.
* Employed as an Array Operator for the National Radio Astronomy Observatory, Very Large Array (VLA) facility on the Plains of San Agustin, New Mexico (March 1986-November 1989).
The VLA is a 27 element radio telescope interferometer which is controlled from a control building near the center of three 22km long arms along which the 25m diameter antennas are positioned. The Array Operator controls and monitors the computer systems used to control the antennas and site auxiliary systems, monitors and takes corrective action for equipment malfunctions, modifies observing programs as required, maintains observing logs, initiates maintenance callouts, controls traffic of maintenance personnel on the array, and is responsible for personnel and equipment safety. In addition to the routine astronomical observing the VLA antennas were arrayed with the National Aeronautics and Space Administration's (NASA) Deep Space Network (DSN) antennas located at Goldstone, California to assist NASA in the reception of image data from the Voyager 2 spacecraft as it flew by the planet Neptune in August 1989.
* Employed as the Chief Operator for the National Radio Astronomy Observatory, Very Long Baseline Array (VLBA) project (December 1989-September 1993).
The VLBA is a 10 element radio telescope interferometer. The 25m diameter antennas are controlled remotely from the Array Operations Center in Socorro, New Mexico. The antennas are spread out across the United States from St. Croix in the U.S. Virgin Islands to Mauna Kea, Hawaii. The Chief Operator is responsible for the supervision of the Array and Correlator Operators and the management, administration, planning, and coordination of the daily, as well long range array activities. The time period of this job covered the main construction phase of the VLBA when the complement of antennas went from two operational antennas to all ten. In addition to normal managerial duties this time period necessitated the establishment of all operating procedures, test procedures, and a preventative maintenance system for remote antenna operations. During this time I also designed, coded, and implemented several major, mission-critical software programs including the display systems used by the control room operators for monitoring antenna systems, the computer to computer communication system used to command and control the ten independent antennas as a unified array, an information retrieval system for online operating documentation, and a distributed database system capable of tracking shipments of recording tapes containing scientific data to and from radio astronomy facilities around the world. Some of these programs are still in use by the observatory.
* Traveling/living in the Western Pacific (September 1993-February 1998).
During this time period I lived aboard and crewed on several sailing yachts in and around the islands of the countries of Indonesia, Malaysia and the Philippines. Visits were also made to Hong Kong and the island of Guam. The last two years of this time was primarily spent living with a family in a small fishing village in the province of Negros Oriental in the Philippines. During this time I operated a ferry service for the nearby communities and tourists using a boat I designed and built.
* Employed as an Array Operator for the National Radio Astronomy Observatory, Very Long Baseline Array (VLBA) project in Socorro, New Mexico (February 1998-July 2000).
The Array Operator controls and monitors the computer systems used to receive and display the continuous stream of monitor data sent by each of the 10 radio telescope antenna station computers, controls the antennas and site auxiliary systems by issuing commands from the array central control computer, monitors and takes corrective action for equipment malfunctions, modifies observing programs as required, maintains observing logs, initiates maintenance callouts, monitors weather conditions at each of the antenna sites, and is responsible for equipment safety. Rewrote and updated the monitoring and control software that I wrote as the Chief Operator.
* Employed as a Seismological Software Engineer/Staff Scientist for the Incorporated Research Institutions for Seismology (IRIS) Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) (July 2000-February 2020).
The PASSCAL Instrument Center (PIC) develops software and hardware, and maintains the National Science Foundation's pool of portable equipment used for monitoring both artificial/active source, and naturally occurring seismic activity. My job was developing, writing and maintaining software applications that are used for monitoring and controlling seismic recording equipment in the field and in the laboratory, and software for field quality control checking of seismic data. I also developed and wrote PASSCAL's inventory tracking and shipping system. Have travelled to over 20 countries as a field technician with PASSCAL equipment on scientific experiments using anywhere from a few to thousands of instruments, ranging in length from days to months, and from Greenland to Antarctica.
* Changed to a Hardware Technician position with IRIS/PASSCAL (February 2020-present).
This job entails testing and maintenance of the thousands of digital seismic recording systems from manufacturers such as Quanterra, Refracton Technologies, Nanometrics, and Fairfield Geotechnologies. Maintenance and creation of unique DC power system for scientific experiments is also included. Processing of time series data is also performed in support of testing and troubleshooting. Handling of equipment and data is also done in the field when requested by individual experiments.
Have had experience working with the following computer systems/programming languages:
--Honeywell 6000 computer; time-sharing, TTY terminal, paper tape, punched cards
--AN/UYK-7 & 20 military computers; real-time vibration moitoring data acquisition and display
--Digital Equipment Corp. System 10; time-sharing, magnetic tape, operations, FORTRAN programming
--Modular Computer Corp. MODCOMP II/III& IV; equipment control, real-time data acquisition and reduction, magnetic tape, operations
--SUN Microsystems 3/260, IPC, IPX, Ultra, Sparc; C/UNIX programming, system administration, general use, Exabyte and DAT storage systems, Ingres/SQL database system programming, TCP/IP network setup and administration, real-time data acquisition and display, Internet
--Motorola VME-1000 using VERSAdos and VxWorks operating systems; equipment control, data acquisition, real-time programming in C
--CONVEX C-1; C programming
--Digital VAX 750 and 850; FORTRAN programming, data reduction, operations
--Macintosh and IBM-compatible micro-computers; C/JAVA programming, setup, real-time engineering data display; Linux, Microsoft Windows, Apple OS X/macOS
--Languages used: BASIC, FORTRAN, COBOL, C, JAVA, SAIL, UNIX Korn, bash, tcsh shells, Z-80 and 68000 assembly, SQL, HTML, tcl/tk, Objective-C, Python/Tkinter
--Database programming: dBase II/III+/IV, SQL (MySQL/MariaDB), many custom database systems
Have had experience working with the following seismological instruments:
--Refraction Technologies (Ref Tek) 72A data acquisitions systems, models -06 to -08, RT125 and RT125A single channel recording systems, and the model 130 (RT130) recording systems
--Quanterra Q330 acquisition systems with PB14F and B44 model data recording balers
--Nanometrics Taurus, Pegasus and Centaur recording systems
--Fairfield Geotechnologies ZLand Three-Channel Seismic Nodes
--Guralp seismic sensors, models 40T, ESP, 3T
--Streckeisen seismic sensors, model STS2
--Many different geophone and accelerometer sensors
* Basic Electrical and Electronics School, Naval Training Center, San Diego, California (December 1977-March 1978).
Circuit theory, transistor theory, electronic circuit troubleshooting.
* Interior Communications Electrician "A" School, San Diego, California (April 1978-June 1978).
Basic logic theory, alarm and indicating systems, amplified communications systems, gyrocompass guidance and tracking systems, basic electrical motor and generator theory.
* Naval Nuclear Power School, Orlando, Florida (September 1978-March 1979).
Thermodynamics, fluid kinetics, electrical generation and distribution theory, power plant chemistry control, nuclear reactor design and reactor kinetics, reactor plant accident analysis, and basic physics.
* Naval Nuclear Power Plant Prototype training, Kesselring Site, Ballston Spa, New York (April 1979-October 1979).
Required training at an operational reactor plant facility leading up to qualification as a nuclear power plant operator and radiation worker.
* S8G Design School, Kesselring Site, Ballston Spa, New York (November 1979-December 1979).
A school which covered the design of all major propulsion plant and reactor plant systems for the Trident/S8G plant (8th General Electric submarine propulsion plant model) presented by the various system design engineers.
* Machinery Vibration Analyst Course, General Dynamics - Electric Boat Shipyard, Groton, Connecticut (March 1980).
Acoustic fundamentals, measurement and analysis techniques, vibration calculations. Electrical, mechanical, and fluid systems sound silencing methods.
* Leadership, Management, Education and Training School, Naval Submarine Base, Bangor, Washington (May 1983).
Basic management concepts, techniques, and their application.
* Ship's 3M Coordinator School, Naval Station, San Diego, California (May 1984).
Ship or command level management and operation of the Navy's scheduled preventative maintenance system (Material Maintenance Management System).
* Computer science, mathematics, chemistry, management and business administration courses, Chapman College, Orange, California and New Mexico Institute of Mining and Technology, Socorro, New Mexico. No degree completed.
Operating the Very Large Array, the Very Long Baseline Array, and the Millimeter Array: A Comparative Study.
100 East Road
Tech Industrial Park
New Mexico Tech
Socorro, New Mexico USA 87801