| Special Issues
at Low frequencies: Dynamic range |
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| • | Bursts
expected in the range 10-2 to 104 SFU |
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| • | Dynamic in RF
channels (before correlation) |
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| – | Wide bandwidth
channels: interference is the main problem, the |
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| power level may
be dominated by interferences ~constant over a |
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| wide frequency
band. |
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| – | Narrow bandwidth
channels: |
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| • | Assuming
Tsys = noise + sky background + |
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| • | For a
large antenna (50 m2), dynamic range is 300 - 106 K
(40 db) |
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| • | For a
small antenna (1m2 - dipole), it is ~23 db |
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