Abstract:
Spin-scan tomographic scanning imagers utilise a reticle with a fixed
number of thin slits and nutating optics, and have produced images and
video at both infrared and optical wavelengths. However, the fixed nature
of these systems reduces their versatility by restricting changes that
can be made after manufacture. An alternative rosette-scan tomographic
scanning imager based on similar concepts is proposed to overcome this
limitation. A single thin-slit reticle is rotated to be perpendicular to the
line scan angle of each rosette petal, thereby allowing tomographic reconstruction.
The parameters of the proposed system can be dynamically
changed to achieve different trade-offs between resolution and
frame rate. Initial results obtained from a proof-of-concept prototype
demonstrate the feasibility of this approach.
