| Special Issues
at Low frequencies: Dynamic (ctd.) |
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| • | Power variations
may be > 20 db/sec. |
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| • | Implications: |
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| – | High dynamic
electronics needed |
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| • | Automatic
attenuators or very fast AGC may be be needed in narrow |
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| band channels. |
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| • | Correlation is
better made by 1 bit correlator +power measurement (or |
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| many bits
correlator - challenging ?) |
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| – | If a spectrum is
computed before correlation, it will have the |
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| dynamic of
narrow channels (neglecting interferences) |
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| • | Note:
Dynamic on images (Tb) may be much higher |
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