Radar Cross Section of the HMS Arethusa at Grazing Incidence
NAVAL RESEARCH LAB WASHINGTON DC
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The radar cross section RCS of the HMS Arethusa has been measured at grazing incidence for frequencies of 1300, 2800, and 9225 MHz. The measurements are for horizontal polarization at 1300 and 2800 MHz and for both horizontal and vertical polarizations at 9225 HMz. The measurements were performed using the NRL dynamic measurement radar at the Chesapeake Bay Division of NRL as the ship proceeded in circular orbits around a point approximately 9500 yards from the radar. Cross-section values were plotted as a function of ships aspect in the form of polar profiles including the 20, 50, and 80 percentile values of the RCS distribution functions, which were determined for 2-degree azimuth increments. Recording instrumentation aboard the ship permitted azimuth aspect determination to the order of 0.2 degree.
- Marine Engineering
- Active and Passive Radar Detection and Equipment