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5.2. Echo (Clutter)
Use a topographic map w/ terrain to find out the location where install the radar from web site (It is not
necessary if a map is already installed in the RainMap) to adjust the azimuth compare with the RainMap
echo of radar.
1) Open a topographic map of the radar installed location.
2) Use the setting that setup on section 5.1.
3) Setup [Display] as below:
- "Display range [km]" to "70.0" or a range that
makes easier to find out a target such as tree,
building, and mountains by ground clutter
depends on an observation area.
- Display data type: Zh[dBZ] or R[mm/h]
4) Select "4" on "Pulse set" in the [TX] menu.
Pulse
Range
No.
[km]
1
30
2
30
3
50
4
70
5) Setup [Scan] as below:
- Scan mode: PPI scan
- EL angle [deg]: 0.0 to 7.0
Set radar to a higher elevation until no echo is
received from lower buildings or structures.
6) Select "OFF" for "GCR" in [Ground clutter rejection]
setting menu of RainMap.
7) Click [Connect] button, then click [TX] button to start
checking the echo in the RainMap.
8) Add a map file to RainMap and display on screen if
the location map has been prepared.
9) Change the value of "AZ offset to north" setting in the
[Zero position offset] menu to adjust the echo that fit
to the geographical feature like a mountain line ridge
or form, note distance, and relative bearing on map.
Reso-
Pulse
Range
lution
No.
[km]
75
5
50
150
6
30
150
7
50
150
8
70
Reso-
lution
75/150
300
300
300
37
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