A Waveform Strategy for Detection of Targets in Multiplicative Clutter

Monday, October 17, 2005 - 1:45pm - 2:15pm
EE/CS 3-180
Bob Bonneau (US Air Force Research Laboratory)
Classical detection theory for sensing relies on fixed target
illumination and independent identically distributed noise for target and
clutter characterization. Unfortunately in many cases such as sensing and
communications in urban or atmospheric scenarios, we encounter much more
complex clutter and target conditions due to scattering from multiple
sources. As a result we must envision a new sensing scheme to combat noise
not handled by classical sensing methods. We will therefore develop
framework whereby we can use the waveform to manage the physical scattering
process such that our return statistics conform to the classical detection
assumption such as idependent identically distributed data. We will first
describe how to use a well known set of waveforms in the context of a given
aperture and how these waveforms propagate when we consider the wideband
multifrequency nature of the waveform. We will then show how the scattering
process and the model for the interaction of the waveform with the target
and the environment model occurs. Finally we will show the propagation
process of the returned waveform and how we can use our waveform selection
to manage the data statistics of the target and noise. Finally we will
conclude with a detection example of this process.
MSC Code: