OBJECTIVES: TOPOGRAPHY IS ESSENTIAL TO UNDERSTANDING THE FORMATION AND EVOLUTION OF ANY LANDSCAPE AS IT PERMITS A THREE-DIMENSIONAL VIEW OF THE INTERACTION BETWEEN GEOMORPHIC UNITS AND ILLUMINATES STRATIGRAPHIC RELATIONSHIPS. UNFORTUNATELY TOPOGRAPHY ON TITAN IS SCARCE. FORTUNATELY CASSINI S ALTIMETRY DATASET IS AN UNDERUTILIZED RESOURCE THAT HAS THE POTENTIAL TO REVEAL DIAGNOSTIC TOPOGRAPHIC RELATIONSHIPS THAT CAN ADDRESS THE FORMATION AND EVOLUTION OF SPECIFIC MORPHOLOGIC FEATURES INCLUDING DUNES MOUNTAINS CRATERS AND EMPTY LACUSTRINE BASINS. THE PROPOSED PROJECT WILL EMPLOY PROVEN ALONG-TRACK PROCESSING AND BANDWIDTH EXTRAPOLATION TECHNIQUES TO IMPROVE THE RESOLUTION OF EXISTING ALTIMETRY DATA AND GENERATE TOPOGRAPHIC PROFILES WITH KM-SCALE ALONG-TRACK SPACING (A FACTOR OF ~6 IN IMPROVEMENT OVER EXISTING PRODUCTS). THESE PRODUCTS CAN BE USED BY THE COMMUNITY TO STUDY THE TOPOGRAPHIC SIGNATURE OF TITAN'S SURFACE. METHODS: THE PROPOSED WORK WILL IMPLEMENT A DELAY/DOPPLER PROCESSING ALGORITHM IN ALONG-TRACK DIRECTIONS AND BANDWIDTH EXTRAPOLATIONS USING BURG S MAXIMUM ENTROPY METHOD (MEM) IN THE RANGE DIRECTION. THIS PROCESSING WILL PERMIT THE DISCRIMINATION OF SIGNALS RETURN FROM SUB-FOOTPRINT RESOLUTION ON TITAN S SURFACE AND RESULTS IN A SIGNIFICANTLY IMPROVED ALTIMETRY DATA PRODUCT. THE INCREASED SPATIAL RESOLUTION OF THESE PRODUCTS WILL PERMIT THE INTERROGATION OF TOPOGRAPHY AT A SCALE THAT IS UP TO SIX TIMES BETTER THAT WHAT IS CURRENTLY AVAILABLE ON THE PDS FINE ENOUGH TO RESOLVE MORPHOLOGIC FEATURES SUCH AS DUNES INDIVIDUAL INSELBERGS AND THE WALL SLOPES OF EMPTY LAKES AND LARGE FLUVIAL VALLEYS. THESE SUPER-RESOLUTION TECHNIQUES WERE DEVELOPED BY DR. VALERIO POGGIALI. THE PROPOSED INVESTIGATION WOULD FUND DR. VALERIO POGGIALI AND THE PI TO APPLY THESE TECHNIQUES TO THE ENTIRE ALTIMETRY DATASET AND MAKE THE RESULTS AVAILABLE TO THE COMMUNITY. RELEVANCE: THE PROPOSED INVESTIGATION IS RELEVANT TO GOALS OF 2016 NASA STRATEGIC PLAN THE NASA SCIENCE PLAN AND THE PDART PROGRAM. THE PROPOSED PRODUCTS WILL PERMIT THE CHARACTERIZATION OF TOPOGRAPHIC PROFILES OF GEOLOGIC FEATURES ON TITAN AND IS ESSENTIAL TO UNDERSTANDING THEIR FORMATION/EVOLUTION. THIS IS DIRECTLY RELEVANT TO OUTCOME 2.3 IN STRATEGIC GOAL 2 OF THE NASA 2016 STRATEGIC PLAN TO ASCERTAIN THE CONTENT ORIGIN AND EVOLUTION OF THE SOLAR SYSTEM AND POTENTIAL FOR LIFE ELSEWHERE . THE PROPOSED IS DIRECTLY RELEVANT TO PDART AS IT WILL ENHANCES THE SCIENTIFIC RETURN OF THE CASSINI MISSION BY PROVIDING A PRODUCT THAT WILL ALLOW RESEARCHERS TO DEVELOP A BETTER UNDERSTANDING OF HOW SURFACE FEATURES FORMED AND INTERACT. THE PROPOSED ALTIMETRY PRODUCTS REPRESENT A SIGNIFICANT ADVANCEMENT OVER EXISTING TOPOGRAPHIC PRODUCTS FOR TITAN. THE PROCESSED ALTIMETRY PRODUCTS WILL BE PRODUCE AT A SPATIAL SCALE THAT IS APPROXIMATELY TEN TIMES SMALLER THAN PREVIOUSLY STUDIED PERMITTING DIRECT INTERROGATION OF SURFACE FEATURES THAT WERE PREVIOUSLY UNRESOLVED. DERIVED ALTIMETRY PRODUCTS WILL BE DISSEMINATED THROUGH THE IMAGING NODE OF THE PDS. THE PI HAS EXPERIENCE GENERATING AND DELIVERING PDS PRODUCTS AND WILL CONFORM TO ALL OF THE PDS REQUIREMENTS.