The Seeker Experimental System (SES) is the passive range within MIT Lincoln Laboratory's Optical System Test
Facility (OSTF). The SES laboratory focuses on the characterization of passive infrared sensors. Capable of projecting
static and dynamic scenes in both cryogenic and room temperature environments, SES supports sensors that range from
tactical ground based systems through strategic space-based architectures. Optical infrared sensors are a major
component of military systems, having been used to acquire, track, and discriminate between potential targets and
improve our understanding of the physics and phenomenology of objects. This paper delineates the capabilities of the
SES laboratory and describes how they are used to characterize infrared sensors and develop new algorithms and
hardware in the support of future sensor technology. The SES Cryogenic Scene Projection System vacuum chamber has
recently been upgraded to allow dynamic projection of radiometrically accurate two-color infrared imagery. Additional
capabilities include the ability to combine imagery from multiple sources, NIST traceable radiometric calibration, and
dynamic scene projection in an ambient environment using a combination of high speed mirrors, point source
blackbodies, and resistive array based dynamic infrared scene projectors.
An overview of the signal processor for the Space-Based Visible sensor system is presented. This signal processor, based on a 20 MHz Motorola DSP56001, places significant processing power into a satellite environment. The signal processor hardware and its real-time executive and applications software are briefly described. Typical performance figures are given, based on scenes taken by a ground-based telescope and processed by prototype hardware and software.