John R. Hoffman
Advanced Sensors and Algorithms Group
Tactical Defense Systems - Eagan
I will discuss a project at Lockheed that seeks to use an existing commercial infrared camera to detect and track the wakes of surface ships in a noisy ocean environment. As with any detection problem, we must develop a model for the signal (which can be viewed as a solution of a free boundry value problem), we must develop a model for noise sources, both environmental and within the sensor, finally we must develop an algorithm that pulls this together to actually perform the detecting and tracking (currently we are using interacting particle methods to approximately solve the non-linear filtering equations). I will discuss our current approach to this problem, and enumerate a number of problems for which we do not yet have solutions.