Design criterion for inclined planar radomes on radar corner reflectors used for spaceborne SAR calibration

Larger corner reflector ground targets currently planned for spaceborne SAR calibration will require planar A-sandwich radome covers for weather protection and mechanical stability. The radomes must be inclined with respect to reflector apertures, however, to avoid scattering cross-section uncertainties in the target beam peak direction. A criterion for inclination angle is derived here.