Jeng-Hwa Yee, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Imran Mehdi, Jet Propulsion Laboratory, Pasadena, CA, United States, Dong Liang Wu, NASA/Goddard Space Flight Cent, Greenbelt, MD, United States and Erich Schlecht, Jet Propulsion Lab, Pasadena, CA, United States