Dorota A. Grejner-Brzezińska (born 1963)[1] is a Polish-American geodetic engineer known for her work on the Global Positioning System.
Strange Endowed Chair in the Department of Civil, Environmental and Geodetic Engineering at Ohio State University,[2] and director of the Satellite Positioning and Inertial Navigation at Ohio State,[1] where she was also the Associate Dean for Research in the College of Engineering[3] and senior associate vice president for research of the university.
Her research on the Global Positioning System has included improvements in the accuracy of methods for estimating GPS satellite orbits, the earth's rotational elements, and local positions "based on carrier-phase triple differences"; integration of GPS into airborne remote sensing; GNSS enhancements and hybrid navigation systems based on inertial navigation systems and other sensor data; and the detection of earthquakes and nuclear testing through disturbances measured in GPS signals.
[1] After this, she remained at Ohio State for postdoctoral research in the NASA Center for Space Development, and was appointed as a faculty member in 1999.
[2] Grejner-Brzezinska has also been recognized for her work in diversity, receiving the Institute of International Education’s Scholar Rescue Fund Award for Outstanding Service, in recognition of “support to IIE‐SRE Fellow Dr. Eblal Zakzok and commitment to preserving the voices and ideas of threatened scholars worldwide”, November 2017 as well as the College of Engineering's Faculty Diversity Excellence Award [10] in 2021.