Measurement of radar cross section reduction

Details Measurement of radar cross section reduction Measurement of radar cross section reduction

1994-06-28

1995-06-27

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Testing or calibrating of radar system

342174, 342 1, G01S 741

Patent

active

054283604

ABSTRACT:
A methodology for the measurement of the effectiveness of gap filler materials and treatments in radar cross section reduction uses an untreated calibration gap in a plate mounted at an acute angle so that specular reflection from radar illumination is diverted away from the horn antenna while monostatic reflection is returned to the antenna. A dielectric lens is used to focus the radar illumination in a narrow beam width so that edge effects of the plate are minimized, obviating the need for an anechoic facility. A spectral baseline is first determined using an untreated gap after which a relative quantitative test is performed on a treated gap. The antenna and horn may be mounted for motion along the gap to determine the electrical continuity of the gap treatment.

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