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1. System Summary
This system observes the development of rain clouds, outputs the strength of precipitation
and the speed of rain clouds (Doppler speed), and observes phenomena of rainfall.
Features:
1. While installing antenna on a rooftop of building in urban area, it must be installed in the
safety area covered by lightning rod based on JIS A4201 and IEC61024-1.
2. Nothing should be surrounded around the antenna area.
Safe distance:
- If H1 is taller than 2.2 meters, it is safe unless touch the antenna directory.
- If H1 is shorter than 2.2 meters, do not enter within a radius of 13meters from the
antenna.
Notice: It based on the standard of 2 meters tall person.
Safety zone around radar
e.g.: H2 (Height) = 2m,
d (Distance between center of the antenna and human) = 13m,
θ =3.5° (Minimum elevation is -2°+ a half of beam width 1.5°)
H2-0.6+d・tanθ = 2-0.6+13・tan3.5°=2.195m<H1
Therefore, H1 (Height of base) = 2.2m,
3. High Resolution Rain Observation, Rain Cloud, Density and Speed Observation.
4. Solid-state Transmitter replaces an aging device such as a magnetron.
- 0.6 + d・tan0
H
＞
H
1
2
d
θ
H
1
d
1
H
2
S2E-17-0056_A
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