User's Manual Part 2

Processing Algorithms (draft)
RVP8 User’s Manual
April 2003
5–67
Figure 5–10: Effect of Windowing on FFT Response to Ground Clutter
Rectangular Window
-20
-40
-60
-80
0
dB Power
Hamming Window
-20
-40
-60
-80
0
dB Power
Blackman Window
-20
-40
-60
-80
0
dB Power
Velocity
0+Vu-Vu
S Blackman Window — This is the most aggressive window for clutter
cancelation and is appropriate only for Klystron systems that can achieve very
low phase noise (~0.1 degree). The peak is the broadest of all the windows, but
the side lobes are the lowest. It is not recommended for magnetron systems
except for performance testing.