Research Article
An Algorithm for Retrieving Precipitable Water Vapor over Land Based on Passive Microwave Satellite Data
Table 1
Performance requirements for the FY-3B MWRI [
45].
| | Frequencies (GHz) | 10.65 | 18.7 | 23.8 | 36.5 | 89 |
| | Polarization | V/H | V/H | V/H | V/H | V/H | | Bandwidth (MHz) | 180 | 200 | 400 | 400 | 3000 | | Sensitivity (K) | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | | Calibration error (K) | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | | Dynamic range (K) | 3–340 | | Samples/scan | 254 | | Main beam efficiency | >90% | | Ground resolution (km) | 51 × 85 | 30 × 50 | 27 × 45 | 18 × 30 | 9 × 15 | | Scan mode | Conical scanning | | Orbit width (km) | 1400 | | Viewing angle (deg) | 45 | | Scan period (s) | 1.8 |
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