  This study aims at advancing mathematical and computational techniques for
reconstructing the interior structure of a near earth asteroid (NEA) via
Computed Radar Tomography (CRT). We introduce a far-field model for full-wave
CRT and validate it numerically for sparse and limited-angle data and an
orbiting distance of about 5 km. As a potential future application of the
proposed method, we consider the Deep Interior Scanning CUbeSat (DISCUS)
concept in which two small spacecraft carrying a bistatic radar localize
internal macropores inside a rubble pile asteroid.

Instrumentation and Methods for Astrophysics;Earth and Planetary Astrophysics