SBIR-STTR Award

GSI has developed both dual mode MMW/IR sensors as well asterminal seekers for mlrs-tgw (martin and Raytheon), sadarm (avco), cgsp (bendix), and other programs over the last few years. We are also presently developing a low cost electronically steered, monopulse strap down seeker for high speed intercepted terminal guidance. This phase I task will investigate the use of a number of different inexpensive terminal seekers utilizing IR, MMW, passive radiometry, Lidar, and various combinations to provide limited detection cap_ ability (small search area) and terminal guidance. The investigation will start with the determination of seeker requirements based on expected trajectories, search areas, approach angles, target characteristics, etc. The investigation will cover scan techniques and waveform characteristics for various type sensors to determine a number of potential terminal guidance schemes. These will be traded using criteria OR performance [cep, pk (if vulnerability available)], volume required, unusual (unbomblike) trajectory requirements, and ultimately seeker cost (in high volume production). GSI will also define a concept validation phase II for the most successful candidate.

In Phase I GSI developed a conceptual design for a low cost bomb terminal seeker. This was done via a trade study comparing IR, video, laser radar and MMW designs. The best performance for a reasonable cost was attained by an innovative MMW design. In Phase II GSI proposes to further develop the selected "best" MMW design. The program will fabricate a prototype MMW electronically scanned antenna and will also fabricate a mm MMW w transceiver, both at 94 ghz. In addition, a radar test best will be used to collect tower and flight data. This data together with available government data will be used to develop advance multivariate stochastic detection algorithm. A new tracking algorithm will also be developed. Other tasks will address the effects of the aerodynamic design on the radar system and form considerations. The result of this program will be a seeker design progressed to the point where the government will have a high amount of confidence in its ultimate performance.