140-GHz Capture Antenna Multipath Experiment.
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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As part of a study of the feasibility of a 140-GHz beamrider, measurements were made of the effect of multipath on the antenna power patterns of simulated missile capture antennas. The upper and lower lobes of two conically scanning capture antennas were simulated using 50.8-mm and 152.4-mm horn-lens antennas. Vertical field probes were made at a range of 100 m over high weeds, mowed grass and asphalt. A theoretical model for specular ground reflection compared favorably with the experimental results. On the basis of this model, it is concluded that the capture of a beamrider missile would be difficult at ranges greater than 200 m over some terrain. Author
- Guided Missiles
- Active and Passive Radar Detection and Equipment