RADAP II, an interim radar data processor

The RADAP (radar data processor) II system, which is developed by the National Weather Service and is a follow-up of the D/RADEX (Digitized Radar Experiment) is described. RADAP maintains the present automatic digital processing capabilities at the D/RADEX sites and extends these capabilities to include 10 network sites in order to fulfill the digital radar data requirements during the period before the production of the Next-Generation Weather Radar (NEXRAD) systems. Consideration is given to the current and future users of the RADAP II data, to the system capability, operational requirements, and hardware; to the installation schedule, and to the products of RADAP II. RADAP II is used for the continued development and testing of applications software to provide feedback on the operational usefulness of the software which is critical to the successful design and development of the NEXRAD system.