Summary of Qualifications
Over 30 years experience in the development and implementation of low-noise microwave
and millimeter wave receiver and radiometer systems. Developed and implemented IF and
signal processing systems, including digital correlators. Experienced in antenna
optics design and precision metrology for antenna optics. Have served as Project
Manager for 14 technical systems.
1975-2002 University of Massachusetts Amherst at the Five College Radio Astronomy Observatory
Started as a Research Engineer and rose to position of Research Professor of Astronomy.
Chief metrologist for the Large Millimeter Telescope (LMT), a joint
project between the University of Massachusetts and the Instituto
Nacional de Astrofísica, Óptica y Electrónica (INAOE) in Mexico.
Responsible for the specification and design of metrology systems
to measure the telescope panels during manufacture and to maintain
the alignment of the optical elements during LMT operation.
Project managed development of an infrared (IR) camera utilizing
the NICMOS IR array. This camera was developed for the
Infrared-Optical Telescope Array (IOTA) on Mt. Hopkins in Arizona.
Project Manager and technical leader for a set of 16 digital correlators.
Each correlators had 1024 custom chips and achieved bandwidths of 2.5 to
80 MHz. These correlators were very reliable in their eight years of operation.
Researched Acousto-Optical Spectrometer (AOS) technology for use in signal
processing in radio astronomy. Built and tested an AOS system, including
a real-time VME based data acquisition system.
Project Manager and system engineer for a continuous comparison 97 GHz
radiometer developed for the MIT Lincoln Laboratory.
Designed a Schottky mixer that was used to develop the world's most
sensitive cryogenic receiver in the 85 to 115 GHz band.
Developed polarization instrumentation, measurement techniques and software
to measure linear and circular polarization as well as full Stokes parameters
in the 7mm, 3mm, 2mm and 1mm wavelength bands.
Various projects in millimeter wavelength Very Long Baseline Interferometry
(VLBI) since 1978. These astronomical measurements involved the simultaneous
acquisition of data at radio telescopes throughout the world requiring frequency
stabilities of 1 part in 10^15 and time synchronization to 100 nanoseconds,
as well as logistical coordination.
1982 - 83 Institut de Radio Astronomie Millimetrique (IRAM) in Grenoble, France and Helsinki University of Technology in Espoo, Finland
- As visiting Research Engineer, developed 230 GHz receivers for use on the IRAM 30m diameter millimeter telescope in Spain and collaborated on an 115 GHz cryogenic receiver.
1972 - 75 National Radio Astronomy Observatory (NRAO) in Charlottesville, Virginia and Soccoro, New Mexico
- Microwave/millimeter wave engineer on the data communication and IF system for the Very Large Array in the 26 to 52 GHz frequency band. Developed and patented a helical coupler from rectangular to TE01 circular waveguide.
As Assistant Professor of Space Science, taught upper-level undergraduate physics courses and continued research on the abundance of He3 in the interstellar medium.
As a consultant, developed a sub-millimeter laser.
- As a graduate student, helped develop, construct, implement and use a 8.7 GHz cryogenic receiver.
- As a Postdoctoral Fellow worked on Project Cyclops, an Engineering Design Study that investigated the feasibility of searching for microwave signals from an extraterrestrial civilization. Co-chaired microwave receiver group.
1962 - 67 U.S. Naval Ships Research & Development Laboratory in Annapolis, Maryland
- As a cooperative work-study student, worked on acoustic measurements and equipment maintenance and improvement for the Ships Silencing Division.
- Member of Institute of Electrical and Electronics Engineers (IEEE)
- Antennas and Propagation Society
- Computer Society
- Geoscience and Remote Sensing Society
- Microwave Theory and Techniques Society
- Signal Processing Society
Sustaining member of American Society for Precision Engineering (ASPE)
- American Society of Mechanical Engineers (ASME)
- B89.4.19 Standards Committee for "Performance Evaluation of Laser Based Spherical Coordinate Measurement Systems"
- International Union of Radio Science (URSI)
- Commission J (Radio Astronomy)