Radar
Display's
M.C.A.
Question - What radar display do you use in your vessel? |
| Ships
Head Up |
North
Up |
|
Your
heading marker uses the course your steering
Compass
course if you're using a magnetic compass
True course if using a Gyro compass I.E.
if you're steering 345o then this is is the course
your ships head will steer as will your heading marker on your
radar screen |
Your
heading marker will always stay at North - you could be steering
200o but your heading marker will always point to North |
|
| Stabilized |
Unstabilised |
| When
the vessel veers/yaws the target's echo does not get stretched
it is exactly where is is seen on screen |
When
the vessel veers/yaws the target's echo does get stretched
(it is elongated) so you have no idea exactly where the target is |
|
| True
Motion |
Advantages/Disadvantages
of True Motion |
| Is
linked to the GPS/Compass,
it uses the information given from these instruments and makes the
center of the screen move relative to your course and speed (Moves
in the same way as a ships video plotter) |
Advantages
is - targets move on the screen is a true course
and speed
Disadvantages
is - the center os the screen moves to the edge
and could be hiding a target just off the edge of the screen |
|
| Sea
Stabilisation |
Ground
Stabilisation |
| This
is where the radar is hooked up to the ships log
so it can tell you the ships speed through the water |
This
is where the radar is hooked up to the doppler log
to tell you the ships speed over the ground |
|
| "S"
Band |
"X"
Band |
| Frequency
is 3000 MHz - this gives better detection of targets through rain
and sea clutter |
Frequency is 9500 MHz is best for finding smaller targets because
of the more powerful beam width which is a lot narrower that the
"S" Band |
|
| Short
Pulse |
Long
Pulse |
| Is
the best for finding targets in the middle of a heavy rain shower |
is
the best for finding a target on the opposite side of a heavy rain
shower |
|
| For
Navigation your best set up
has to be Ships head up stabilised, using "S" Band Frequency
for seeing targets in rain or the "X" Band for finding
smaller targets and switching between long and short pulses |
