1 Introduction
2 Data
Radar number | Location | Latitude | Longitude |
---|---|---|---|
Z9280 | Chengdu, Sichuan | 30.6600 | 104.01 |
Z9816 | Mianyang, Sichuan | 31.4522 | 104.765 |
Z9817 | Nanchong, Sichuan | 30.8219 | 106.0778 |
Number | Project | Radar (CINRAD-SC) |
---|---|---|
1 | Transmitter WAVE type | C-band (5630 Mhz) |
2 | Transmitter Peak power | 660 Kw |
3 | Antenna type | 4.5 db |
4 | Beam width | 0.9° |
5 | Detection range | 160 km |
6 | Range Bin | 300 m |
7 | Volume scan mode | VCP21 |
8 | Elevation range | 0.5–19.5 |
9 | Scan mode | PPI |
3 Interpolation algorithm
3.1 Nearest Neighbor
3.2 Vertical Horizontal Linear interpolation
3.3 8-point Linear interpolation
3.4 Adaptive Barnes
4 Mosaics
4.1 Mean deviation filter
4.2 Reflectivity data mosaic
5 Result and discussion
5.1 Interpolation methods verification
Category | VHI | Nearest Neighbor | 8-point Linear | Adaptive Barnes |
---|---|---|---|---|
Proportion of points with valid data | 59.32% | 56.63% | 55.07% | 60.02% |
Smoothness | Ordinary | Ordinary | Ordinary | Excellent |
Continuity | Poor | Poor(mutation) | Excellent | Excellent |
Heavy precipitation areas | disappeared | Accurate | Accurate | Accurate |
5.2 Mosaics verification
Category | Nearest Neighbor | Maximum Value | Exponential Weighting | |
---|---|---|---|---|
Continuity | Poor (missing massively) | Excellent | Excellent | |
Stability | Poor | Poor | Excellent | |
Heavy precipitation areas | Intensity | Greater | Standard | Standard |
Range | Larger | Standard | Standard |