Radar Observations and the Shape of 2008 EV5

Radar Speckles and Near-Earth Asteroids

Michael Busch

(with thanks to Jean-Luc Margot, Lance Benner,

Walter Brisken, and Adam Deller)

Radar Speckle Patterns

Target

Dtarget

d

Separation

Baseline (B)

Earth and

Antennas

LSpeckle = Dtarget/d

Radar Speckle Patterns

Kholin 1988, Margot et al. 2007

B

LSpeckle

Antenna 1

Antenna 2

Speckle Motion

Antenna 1

Antenna 2

Time

Echo Power

Projected

spin vector

Bcos()