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