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Phase-Preserving Processing of ScanSAR
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RESULTS
A simulation experiment was performed to verify the performance of the
proposed algorithm. 16 equally-spaced targets were placed in the same
range gate as shown in Figure 1. A
Kaiser window was applied to each burst in the processing. Image
quality parameters of the good targets such as impulse response width,
maximum side lobe ratio, geometric registration, and phase at the theoretical
peak position were measured. It was found that these parameters
agreed with their theoretical values.
Figure 3 shows part of the output
from IFFTs 1 & 2, corresponding to targets 1 to 10. Two divisions
where the targets change from complete to incomplete are shown, at targets 5
& 9. The good targets are then selected from each IFFT, as shown
in the bottom part of Figure 3.
Figure 4 shows the impulse response of
Target T3 in S1 and S2. From the
figure, it is clear why this target is a good one in S1, but
rejected in S2.
Figure 4: Impulse Response of Target
ian cumming
Fri Sep 5 16:48:53 PDT 1997