Radiation Hardened Interceptor Seeker Sensor Technologies

A key requirement for IR sensors in interceptor seekers is to continue to image through adverse environments, including the radiation from nuclear events. This radiation hardening requirement is addressed with a multifaceted approach that includes a novel filter, implemented in the unit cell, that mitigates the effects of gammas, betas, and protons, while leaving the IR signal unaltered. Other radiation hardening measures include a high doping, low resistance, epi for improved SEL performance and extensive implementation of rad hard by design techniques. Other enabling features of the LWIR/LWIR sensor include very high dynamic range, larger format, and higher frame rate. All these attributes contribute to an enhanced probability-of-kill. The program targets transition into the MOKV and other MDA and DoD assets. Approved for Public Release | 18-MDA-9522 (23 Feb 18)