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Matsuo SEKINE Hiroyuki ENDO Yoshinobu NAKAYAMA Toshimitsu MUSHA Yuichi TOMITA Toshihiko HAGISAWA Takeru IRABU Eiichi KIUCHI
Ground clutter from irregular surfaces was measured using an L-band long range air-route surveillance radar (ARSR) at very low grazing angles, between 0.13 and 0.25. It is shown that the ground clutter amplitude statistics themselves do not always follow a Weibull distribution, but rather the residual amplitude after the double canceller moving target indicator (MTI) obeys a Weibull distribution. Therefore, the unsuppressed residual ground clutter will be suppressed by means of Weibull CFAR processors.
Matsuo SEKINE Toshimitsu MUSHA Yuichi TOMITA Toshihiko HAGISAWA Eiichi KIUCHI
Ground clutter from cultivated land was measured using an L-band long range air-route surveillance radar (ARSR) at very low grazing angles, between 0.21 and 0.32. It is shown that the Weibull-distributed ground clutter obeys a Weibull distribution in the frequency domain after processing by the discrete Fourier transform (DFT). Thus the new Weibull-CFAR should be considered to suppress such clutter in the frequency domain.