THE OBJECTIVE OF THIS PROPOSAL IS TO UPGRADE THE D3R RADAR MOSTLY IN THE AREA OF THE DIGITAL RECEIVER AND SOME UPGRADES ON THE PRODUCT GENERATION. PROVIDE ENGINEERING AND OPERATIONS SUPPORT FOR NASA D3R RADAR IN TERMS OF 1) SUPPORT FOR DIGITAL RECEIVER UPGRADE AND TESTING 2) OPERATIONS SUPPORT OF THE D3R IN THE WALLOPS ISLAND AND 3) CONTINUE THE ANALYSIS AND MAINTENANCE OF THE IPHEX DATA TOWARDS SUPPORT FOR THE PMM SCIENCE COMMUNITY 4 ) PREPARE SPECIALLY PROCESSED DATA FROM OLYMPEX FOR THE PMM SCIENCE COMMUNITY AND 5) CONDUCT TESTING AND CALIBRATION FOR MAINTAINING QUALITY AND 6) PARTICIPATE IN THE INITIAL PREPARATIONS FOR THE ICE-POP EXPERIMENT.