MDC-7000/7900 Series Chapter 2 Radar Basic Operation
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Actual location of the ship carrying the SART
If your ship is located at 1 NM or more away from the SART, the position at which the first echo is
displayed is 0.64 NM behind the actual SART position when the 12 SART echoes are identified. If your
ship comes within 1 NM from the SART, the fast sweep signal is indicated. The position of this echo is
displayed 150 m beyond the actual SART position.
Slow sw eep signal
Fast sw eep signal
Beam w idth of the
radar signal received
SART position
SART position
1 nm or more beyond
the SART position
Within 1 nm of SA RT position
9.5GHz
9.2GHz
7.5µs sw eep time
95µs sw eep time
Slow sw eep signalFast sw eep signal
Sw eep start
The SART signal presentation and its signal timing
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