Furuno 9ZWWR2120, Руководство по установке

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S2E-17-0209_IM_WR2120_C
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6. Drag & Drop a folder (sppi_before, sppi_after, rhi_before,
rhi_after) into [Antenna_position_analysis.exe] to check the
graph.
- Refer to section 7.4 for instructions.
- Solar radiation spectrum has difficulty to check when sun is
blocked by clouds or position of sun is poor during scan.
7. Add the average values of the figure 7.9 to the original offset
value if need to change the value.
e.g.: [Upward -0.76] subtract [Downward -0.91] divided by 2 = -0.84
8. Add the average values of SPPI and SRHI as follows:
Press [Alt] + [Ctrl] + click [setting] menu of RainMap,
[Setting] > [Advanced Setting] > [Zero position offset] >
a) Sector PPI into [AZ offset to north]
b) Sector RHI into [Origin EL position offset correction [deg]]
Note:
Take a screenshot of the original value before
change the setting of offset value .
9. Repeat from step 2 to 6 to observe data of “SPPI after”.
10. Do the same things for Sector RHI start from step 2. Go to the next step when all adjustment is
completed.
11. Confirm the RainMap echo indication either using Sector PPI scan and Sector RHI scan. Repeat the
process 9 if it did not update.
Note:
Do not forget to do the [Auto ground clutter mapping] after changed value of the [AZ offset to north]
and [Origin EL position offset correction]. (Refer to the Operator’s manual for operation)
7.7. Uninstall the Software
Follow the instruction below to uninstall the [Solar_Position_tools], [LabVIEW
TM
Run-time Engine
2014] software.
1. Open [Program and function] in [Control Panel].
2. Choose the name of software to uninstall.
3. Click the Uninstall button
4. Complete
Note:
Choose [National Instruments Software] to uninstall [LabVIEW
TM
Run-time Engine 2014].
7.8. Conclusion
Calculation of the solar positon:
This software uses “Astronomical algorithms” created by Jean Meeus to calculate algorithms of
the solar positon.
The accuracy of this algorithm on longitude is +/- 72 degrees of range within 0.0167 degrees.
However accuracy depends on atmospheric temperature, pressure, and humidity. Therefore
under certain circumstances accuracy may be very poor.
Currently the solar azimuth value is properly corrected when refraction of atmospheric
conditions are properly considered.
Reference: U. S. Department of Commerce / National Oceanic & Atmospheric Administration / NOAA
Research / Earth System Research Laboratory (ESRL)
https://www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html
Figure 7.9
Figure 7.10
Before offset
adjustment
Using
current
offset value
(sppi_before)
After offset
adjustment
Green line
comes
between blue
and red lines
(sppi_after)