Bistatic Synthetic Aperture Hitchhiker Imaging

Abstract

We introduce a new bistatic synthetic-aperture imaging method for a radar system consisting of two receivers, which will be referred to as hitchhikers, and a source of opportunity. We assume the receivers y along arbitrary, but known, ight trajectories. We develop a correlation-based ltered-backprojection reconstruction method that preserves the visible edges of the target scene in the reconstructed image. We present an analysis of the computational complexity of the introduced method and demonstrate its applicability in numerical simulations.Potential applications of the proposed method include image formation using low earth orbiting and space-borne satellites as sources of opportunity.

True amplitude BiSAR image reconstruction via backprojection and image domain scaling

“…In the final version of our manuscript, we will discuss extension of our approach to other synthetic aperture imaging modelities, such as synthetic aperture hitchhiker [8]. …”

Problems in synthetic-aperture radar imaging

“…An approach for exploiting unknown motion is given in [88]. (vi) Synthetic-aperture imaging techniques need to be more fully developed for the case of a small number of transmitters and receivers [18,33,101,107,108,115], which could be positioned far from each other. In this multistatic situation, synthetic apertures and real apertures are combined.…”

“…How can images best be formed when sparse, random networks of antennas are used? Is it possible to exploit radiation from radio and TV stations to form images [46,114,115]? (xx) If sensors are flown on unoccupied aerial vehicles, where should these UAVs fly?…”