The Point Array - RADAC WaveGuide 5 Direction User Manual

The Point Array

The point array has proven to be an easy to install configuration
that requires the smallest amount of space on the supporting
structure. The correct installation requires the radars to be
installed in a counter clockwise manner with radar A installed
vertically and B and C at a fixed tilt angle.
Upon request, Radac can provide a standard mounting frame
(product no. WG5-MD-EX) that allows for easy and accurate
mounting of the system (Fig. 2.5 ). The mounting frame can
be used to mount the three radars together while allowing the
vertical mounting of one radar and the tilted mounting of two
radars (tilted to 15 [deg] from vertical). This results in an ar-
ray footprint size that is approximately 25% of the mounting
height. Using the array design criteria it can be concluded that
this configuration is optimized for measuring directional wave
parameters for wave lengths that are 0.75 to 7.5 times the mounting height. For example,
a mounting height of 10 [m] is optimal for wave lengths in the range from 7.5 to 75 [m]
(wave periods from 2.2 to 7 [sec]). While a mounting height of 25 [m] is optimal for a wave
length range from 18.75 to 187.5 [m] (wave periods from 3.5 to 11 [sec]).
Figure 2.5: Simplified top view of a point array
mounting frame (product no. WG5-MD-EX).
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Figure 2.4: Top view of the
three radar positions labeled A,B
and C in an anticlockwise se-
quence. In this case the labels
apply to the physical radars and
their functional definitions.