Quantitative Measurements of Radar Echoes from Aircraft. XII. F-80
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
The characteristics of X-, S-, and L-band radar echoes from F-80 aircraft, with and without wing tanks, are presented in this report. Amplitude distributions of ten-second samples of the F-80 echo show that the general range of echo fluctuation is somewhat less than that found in propeller-driven aircraft or in large jet aircraft. The relative fluctuation of the echo is least near broadside, where the large echo component arising from the fuselage dominates the total echo. No clearly discernible effect of the wing tanks is found in the amplitude distributions, presumably owing to the small radar area of the wing tanks. At certain aspects, however, the wing tanks apparently caused a distinct modulation in the echoes at rates proportional to radar frequency. Aside from such modulations, the fluctuations of the F-80 echo had continuous low-frequency spectrums of width proportional to radar frequency. For the aspects measured, the average median radar area outside of the broadside region is roughly independent of frequency and is equal to about 1 square meter. For the broadside region, which has a two-humped shape, the average median radar area is equal to 20 square meters. Presence of wing tanks did not affect the average S-band median radar area appreciably.
- Active and Passive Radar Detection and Equipment