Doppler Weather Radar - METNET - India Meteorological Department
Doppler Weather Radar - METNET - India Meteorological Department
Doppler Weather Radar - METNET - India Meteorological Department
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1. Bins till 2km (configurable) from radar not processed<br />
– Transient time /near field /Receiver sensitivity<br />
2. Data truncated at 20km (configurable) height<br />
– Data volume minimizing/ faster processing<br />
3. Cone of silence below the beam<br />
- increase in lower elevation of beam blockage /Ground returns from side lobe 40%<br />
of crucial/volume of interest not scanned by the radar<br />
Table D.2. Present Scan Strategy at Palam <strong>Radar</strong><br />
Parameter<br />
Present<br />
No of scans 10<br />
Number of overlapping 1<br />
Time for one complete volume scan 6<br />
Minimum elevation<br />
Maximum elevation<br />
0.5 deg<br />
21.0 deg<br />
Elevation angles 0.5, 1.0, 2.0, 3.0, 4.5, 6.0, 9.0, 12.0, 16.0, 21.0<br />
PRF<br />
Scan rate<br />
PW<br />
300-600 Hz<br />
12 deg per sec.<br />
1 and 2 micro sec<br />
Increased radar strain ---<br />
Cone of silence ---<br />
Derived product needs<br />
fair<br />
86
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