TY - RPRT TI - Method and System for Determining Relative Displacement and Heading for Navigation AU - Sheikh, Suneel Ismail AU - Pines, Darryll J. AU - Conroy, Joseph Kim AU - Spiridonov, Timofey N. PY - 2015 UR - https://ntrs.nasa.gov/citations/20150003456 ID - 20150003456 ER -