Dr. Michael E. Hough is an Engineering Fellow at Raytheon Technologies, currently supporting missile defense radars. His work has improved radar orbit determination accuracy, covariance consistency and radar search during boost, midcourse and reentry phases of flight. He recently patented an algorithm for radar bias estimation. His current work focuses on GPS radio occultation for tropospheric bias estimation, the first such application to missile defense radars. He received a Ph.D. and M.S.E. in astronautical sciences from Stanford University, and a B.S.E. in aerospace engineering from Princeton University. He was previously employed by the MITRE Corporation, Textron Defense Systems (formerly AVCO), The Analytic Sciences Corporation (TASC), and Ford Aerospace Corporation. His expertise and publications include orbital mechanics, orbit determination, and aerospace vehicle guidance, control, estimation and navigation. He currently serves as Associate Editor for the AIAA J. Guidance, Control & Dynamics.