Micro-Wave Radiation Imager-II (MWRI-II)

Description

Succeeding the channel settings of MWRI-I, MWRI-II has enhanced observation abilities with additional channels and improvements in calibration accuracy, observation sensitivity, positioning accuracy and operational lifetime.

Satellite FY-3F , FY-3H
No. Channels 22
Dynamic range 3~340K
Main-beam efficiency ≥95%
Channel registration ≤2km (0.5km expected)
Swath width ≥1400km
Scan cycle three modes: 1.7s, 1.8s, 2.0s
Scan error 1ms (continuous in 30 minutes)

Characteristics

Center frequency (GHz) Polarization Bandwidth (MHz) Frequency stability (MHz) Sensitivity (K) Minimum/expected accuracy (K)
10.65 V,H 180 10 0.5 0.8 / 0.8
18.7 V,H 200 10 0.5 0.8 / 0.8
23.8 V,H 400 15 0.5 0.8 / 0.8
36.5 V,H 900 20 0.5 0.8 / 0.8
50.30 V,H 400 25 0.5 0.8 / 0.8
52.61 V,H 400 25 0.5 0.8 / 0.8
53.24 V,H 400 25 0.5 0.8 / 0.8
53.75 V,H 400 25 0.5 0.8 / 0.8
89.0 V,H 3000 25 0.5 0.9 / 0.8
118.7503±3.2 V 2×500 25 0.8 1.2 / 0.8
118.7503±2.1 V 2×400 25 0.8 1.2 / 0.8
118.7503±1.4 V 2×400 25 0.8 1.2 / 0.8
118.7503±1.2 V 2×400 25 0.8 1.2 / 0.8

Data and Products

Satellite Instrument Datasets
FY-3F MWHS-II L1 data
FY-3C MWHS-II L1 dataL2L3 product

Calibration and Validation

MWRI-II calibration and validation

FY-3F MWRI-II SRF (ZIP)

MWRI-II

MWRI-II