The 3246th Test Wing (TFIM) at Eglin AFB, FL, and the Georgia Tech Research Institute (GTRI) at Atlanta, GA, are jointly developing a 95 GHz instrumentation radar system to be used in the collection of terrain (clutter) backscatter signatures as well as target-in-clutter signatures. The system will address the research and development, test and evaluation (RDT&E) data requirements for a variety of US Air Force and US Army smart weapons systems to include data required for modeling and analysis, hardware-in-the-loop simulators, and coincidental sensor/seeker under test baseline performance evaluation. The data quality and specific system parameters are such that the "scene" data collected can be merged or synthetically blended with the recent target signatures collected under a number of joint services target data base collection programs. By establishing a "comparable" data base of high quality scene data, the sensor/seeker community will have a high quality, highly flexible data base for concept development and evaluation. In addition to the 95 GHz data capability described in this paper, the complete multispectral data acquisition system, known as the Airborne Instrumentation System (AIS), will also provide coincidental infrared signature of the scene, providing data for multimode sensor/seeker development (i.e., 3-5 and 8-12 micron and 95 GHz). The radar is scheduled to be installed in a USAF C130 test bed aircraft in mid-1991. The AIS and C130 test bed together form the USAF Airborne Seeker Evaluation and Test System (ASETS) which is available for use by the RDT&E community. The following sections describe the design and special features of the 95 GHz radar portion of the AIS-ASETS.