Easat VTS radar sensor package consists
of the EA7401M printed array antenna and the ET2525 transceiver.
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The narrow azimuth beamwidth (typically
0.31 degrees) gives superior azimuth resolution enabling
the radar to discriminate between two or more targets
closely separated in azimuth. This is important in the
VTS environment to ensure safe separation of vessels and
to prevent accidents.
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Another advantage of the narrow azimuth
beamwidth is the reduction of the clutter cell which reduces
the received clutter power, both sea clutter and rain
clutter. The net effect is an increased probability of
detection of both small and large targets.
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The range resolution is the radar’s
ability to discriminate two or more targets separated
in range and it depends on the pulse width and the shape
of the pulse. The parallel feed network implemented in
the radar head ensures the transmitted pulses are not
distorted and the system maintains a high range resolution.
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