A 3D-Printed Saddle reflector for upwards-looking Bi-static SAR Snow Radar

This paper presents a 3D-printed saddle reflector for an upwards looking bi-static, synthetic aperture radar (SAR) radar instrument. The reflector is designed for a varying bi-static angle over 25°. The saddle reflector combines the high RCS of a flat reflector, with the wide aspect angle of a sphere. The reflector achieves an mean RCS of -0.46 dBm ² over frequency, over an aspect angle of ≈ 40°. The compact reflector measures only 310 mm x 210.5 mm x 26 mm and is printed using inexpensive 3D-printing technology.