Imaging and Computing Seminar
Birsen Yazici, Mathematics, RPI
Title:
Passive Synthetic Aperture Imaging
Abstract:
I will present novel synthetic-aperture imaging modalities for radar/sonar
that rely on sources of opportunity. In particular, I will present two new
modalities which we refer to as "hitchhiker" and "Doppler hitchhiker". Both
modalities involve receivers only and use sources of opportunity, such as
TV, radio, or WiFi signals (or ambient sound) to form an image. While
hitchhiker uses delayed and correlated measurements and is suitable for
wideband sources of opportunity, Doppler hitchhiker uses scaled and
correlated measurements and can form high resolution images using single
frequency sources of opportunity. I will derive forward maps in the form of
Fourier Integral Operators for both modalities; present the underlying
imaging geometry and describe the image formation using microlocal
techniques.