MWRI

Micro-Wave Radiation Imager

Satellites

FY-3 A to G

Status

Operational – Utilised in the period 2008 to ~ 2024

Mission

Multi-purpose MW imager

Instrument type

6-frequency, 12-channel MW radiometer

Scanning technique

Conical: 53.1° zenith angle, swath 1400 km – Scan rate: 35.3 scan/min = 10 km/scan

Coverage/cycle

Global coverage once/day

Resolution (constant)

Changing with frequency, consistent with an antenna diameter of 90 cm

Resources

Mass: … kg - Power: … W - Data rate: … kbps

Central frequency (GHz)

Bandwidth (MHz)

Polarisations

Accuracy (NEΔT)

IFOV

Pixel

10.65

180

V, H

0.5 K

51 x 85 km

70 x 70 km

18.7

200

V, H

0.5 K

30 x 50 km

40 x 40 km

23.8

400

V, H

0.8 K

27 x 45 km

30 x 30 km

36.5

900

V, H

0.5 K

18 x 30 km

25 x 25 km

89

4600

V, H

1.0 K

9 x 15 km

12 x 12 km

150

3000

V, H

1.3 K

7.5 x 12 km

10 x 10 km