Sciences and Exploration Directorate

Oscar L Colombo

(SUPPORT SCIENTIST V)

Oscar L Colombo's Contact Card & Information.
Email: oscar.l.colombo@nasa.gov
Org Code: 61A
Address:
NASA/GSFC
Mail Code 61A
Greenbelt, MD 20771
Employer: SCIENCE SYSTEMS AND APPLICATIONS INC

Brief Bio


Bachellor degree in Telecommunications Engineering, Natiopnal University of La pLata, Argentina. PhD in Electrical Engineering from the University of New South Wales, Australia,. Has worked since with NASA and Universities in Europe on gravity field modeling and precise positioning with GPS and similr GNSS systems, including precise LEO orbit determination. Also for the US Nay in new applications of GPS.

Education


1967 - Ingeniero en Telecomunicacions, Universidad Nacional de la Plata (Argentina).
1977 - PhD (Electrical Engineering), New South Wales University (Sydney, Australia).
Thesis: On the control of discrete-time systems with constrained input and state variables.

Current Projects


Possible use of constellation of cubesats to monitor and issue warnings of tsunami in progress with GNSS reflectometry and analysis of ionospheric perturbations caused by upward travelling pressure waves generareted by tsunami.

Remote Sensing

As indicated in the title. Also looking for possible secondary use of cubesat constellation to monitor climate change through observation of the tropospheric water vapor content and the ionosphere using the same =data for detecting tsunami.

Positions/Employment


Senior Scientist (Consultant)

SSAI subcontractor - Goddard SFC

December 2021 - Present

Consultant on satellite navigation and advanced new projects.

Professional Societies


Institute of Navigation.

2011 - Present


International Association of Geodesy.

Fellow

1990 - Present

Publications


Refereed

2010. "Sparse Network: Wide-area, Sub-decimeter Positioning for Airborne LiDAR Surveys." GPS World 21 (10): 44-50 [Journal Article/Letter]

2006. "GPS/Acoustic Seafloor Geodetic Observation: Method of Data Analysis and its Application." Earth Planets Space 58 265-275 [Journal Article/Letter]

2001. "A New Strategy for Real-Time Integrated Water Vapor Determination in WADGPS Networks." Geophysical Research Letters 28 17 [3267-3270] [Journal Article/Letter]

2000. "Application of Ionospheric Tomography to Real-Time GPS CarrierPhase Ambiguities Resolution, at Scales of 400-1000 km and With High Geomagnetic Activity." Geophysical Research Letters 27 13 [2009-2012] [Journal Article/Letter]

Non-Refereed

2010. "Wide-area, Sub-decimetre Positioning for Airborne LiDAR Surveys Using CORSnet-NSW." [Proceedings]

2009. "Shortening the Convergence Time of Wide-Area Real-Time Kinematic Solutions." [Proceedings]

2008. "Real-Time, Wide-Area, Precise Kinematic Positioning Using Data from Internet NTRIP Streams." Proceedings ION GNSS [Proceedings]

2006. "A Zenith Delay Model for Precise Kinematic Aircraft Navigation." Proceedings of the ION GNSS-2006 [Proceedings]

2005. "Extending Wide Area and Virtual Reference Station Networks Far Into the Sea With GPS Buoys." Proceedings of the ION GNSS-2005 [Proceedings]

2004. "Evaluation of Precise, Kinematic GPS Point Positioning." Proceedings ION GNSS-2004 [Proceedings]

2003. "Evaluation of Real-Time, Long-Range, Precise, Differential, Kinematic GPS ." Using Broadcast Orbits, Proceedings ION GNSS-2003 [Proceedings]

2002. "Carrier-Phase Ambiguity Resolution Using a Tomographic Model of the Ionosphere." Wide-Area, "Navigation" 41 (1): [Journal Article/Letter]

2001. "Speeding up the estimation of floated ambiguities for sub-decimeter kinematic positioning at sea ." Proceedings ION GPS-2001 [Proceedings]

2000. "Long-Baseline (> 1000 km), Sub-Decimeter Kinematic Positioning of Buoys at Sea, with Potential Application to Deep-Sea Studies." Proceedings of the ION GPS-2000 Symposium [Proceedings]

1999. "Resolving Carrier-Phase Ambiguities On The Fly, At More Than 100 km From Nearest Reference Site, With The Help Of Ionospheric Tomography ." Proceedings of the ION GPS-99 Symposium [Proceedings]

1998. "Sea and Land Tests of Long-Baseline Kinematic GPS Indicate SubDecimeter Level Precision." Proceedings of the INSMAP-98 Symposium [Proceedings]