LX-80-15 10 Hz User Manual
8
LX-80-15 10 Hz Oceanographic Radar Sensor
Height [m]
Diameter [m]
0.3
0.03
0.5
0.04
1
0.09
2
0.17
3
0.26
4
0.35
5
0.44
6
0.52
7
0.61
8
0.70
Water surface directly below the sensor should be void of vegetation, rocks, sand deposition or other
obstacles that could affect measurements. Geolux LX-80-15 10 Hz has built-in advanced signal
processing algorithms that detect interferences coming from objects close to the water surface, but
these algorithms have some limitations. The performance of interference reduction algorithms is further
limited when the instrument vibrates due to improper mounting. Best results will be achieved when the
measurement location is selected in the recommended way.
If there is slight or moderate roughness (waviness) of the water surface below the sensor, the amount
of reflected radar signal will be reduced. This will reduce SNR (Signal to Noise Ratio) on the radar echo
curve, but in most cases won’t affect measurement accuracy. Strong turbulent flow, with high water
roughness, will reduce measurement accuracy due to the unpredictability of the water surface. To
improve measurement accuracy in such conditions it is recommended to configure the radar sensor
averaging filters to calculate an average level over multiple measurements. If the measured level is
highly turbulent, the length of the averaging filter can be adjusted to filter out most, if not all turbulences.
Height [m]
Diameter [m]
9
0.79
10
0.87
11
0.96
12
1.05
13
1.14
14
1.22
15
1.31
20
1.75
25
2.18
30
2.62
Table 3. Relationship Between Height from the Water Surface and Diameter of the Radar Beam
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