MSMR

Multi-frequency Scanning Microwave Radiometer

Satellites

IRS-P4 (OceanSat-1) and OceanSat-2

Status

Operational – Utilised in the period: 1999 to ~ 2013

Mission

Sea-surface temperature, wind on sea-surface, total-column water vapour over the sea

Instrument type

MW radiometer with 4 frequencies / 8 channels

Scanning technique

Conical: 55° zenith angle; swath: 1360 km - Scan rate: 11.16 scan/min = 36 km/scan

Coverage/cycle

Global coverage once/day

Resolution

Changing with frequency, consistent with an antenna diameter of 80 cm

Resources

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

Central frequency

Bandwidth

Polarisations

Radiometric accuracy (NEΔT)

IFOV

Pixel

6.6 GHz

350 MHz

V, H

< 1.0 K

68 x 105 km

50 x 36 km

10.65 GHz

100 MHz

V, H

< 1.0 K

43 x 66 km

50 x 36 km

18.0 GHz

200 MHz

V, H

< 1.0 K

26 x 40 km

25 x 36 km

21.0 GHz

400 MHz

V, H

< 1.0 K

22 x 34 km

25 x 36 km