JMA-900B series
– performance features
JMA-900B
C h a r t ra d a r – i m p r o ve d s i t u a t i o n aw
The new JMA-900B chart radar combines JRC’s
renowned radar and highly advanced ECDIS
technology, providing reliable performance and
significantly improves situation awareness.
Unique features
Also, it is easy to active, deactivate
and switch between AIS target
symbols. This simply can be done
with an integrated AIS filter,
prioritising the targets within a
dedicated area.
The AIS is an important key device used to indicate AIS target symbol and information.
These targets are very useful, as it provides the maneuvering conditions of other ships
at a glance, allowing for safe and effective navigation. The name of the vessels, and
AIS targets
bearing, range, speed, length, heading
and much more AIS target specifics from
other ships are received and displayed. The
AIS symbols are continuously displayed
on-screen without the influence of the
radar characteristics. The AIS targets are
never shielded by ground, rain or cloud
reflections, nor are they eliminated by
adjustments of anti-sea or anti-rain clutter.
120nm
1
2
4
3
1. vessels’ position
2. ring area
3. sector area
4. heading line
Other ship’s movement and speed can
be monitored from length and direction
of their trails, primary serving for collision
avoidance. The JMA-900B series integrate
three different trail length modes, that will
show a ship’s course instantly.
Select a trail length
1 min
3 min
6 min
10 min
The second generation and patented
Constaview™ is realised through the use
of two high-speed processors (in-house
Tornado™ technology). All info gathered
by the radar is fully processed within
a few milliseconds before displayed,
generating a smooth image rotation
when sailing in Head-Up mode. When
changing to North-Up, the new radar
image is displayed without any delay
caused by the scanner rotation.
Constaview™
Constaview™ in JMA-900B
Constaview™ works in radar mode. In chart-radar mode,
radar images are displayed with regular intervals.
Constaview™
Conventional
Radar
sweep
Redrawing
True Trails
Constaview™ refreshes the image
every 16mS. Despite heading
changes trails are always true.
Relative Trails
Traditional technology relies on several
sweeps of the scanner to redraw the
image. Trails are presented as relative.
