SSMIS Overview
| F18 SSMIS Channel Characteristics |
| Channel |
Center
Freq. (GHz) |
Passband
(MHz) |
Freq. (MHz) /
Polar. |
NEDT (Max)
(K) |
Sampling
Interval
(km) |
Footprint
(km) |
| 1 | 50.3 | 400 | 10 H | 0.4 | 37.5 | 38 x 38 |
| 2 | 52.8 | 400 | 10 H | 0.4 | 37.5 | 38 x 38 |
| 3 | 53.596 | 400 | 10 H | 0.4 | 37.5 | 38 x 38 |
| 4 | 54.4 | 400 | 10 H | 0.4 | 37.5 | 38 x 38 |
| 5 | 55.5 | 400 | 10 H | 0.4 | 37.5 | 38 x 38 |
| 6 | 57.29 | 350 | 10 RCP(*) | 0.5 | 37.5 | 38 x 38 |
| 7 | 59.4 | 250 | 10 RCP | 0.6 | 37.5 | 38 x 38 |
| 8 | 150 | 1500 | 200 H | 0.88 | 37.5 | 14 x 13 (imager) |
| 9 | 183.31±6.6 | 1500 | 200 H | 1.2 | 37.5 | 14 x 13 (imager) |
| 10 | 183.31±3 | 1000 | 200 H | 1.0 | 37.5 | 14 x 13 (imager) |
| 11 | 183.31±1 | 500 | 200 H | 1.25 | 37.5 | 14 x 13 (imager) |
| 12 | 19.35 | 400 | 75 H | 0.7 | 25 | 73 x 47 |
| 13 | 19.35 | 400 | 75 V | 0.7 | 25 | 73 x 47 |
| 14 | 22.235 | 400 | 75 V | 0.7 | 25 | 73 x 47 |
| 15 | 37 | 1500 | 75 H | 0.5 | 25 | 41 x 31 |
| 16 | 37 | 1500 | 75 V | 0.5 | 25 | 41 x 31 |
| 17 | 91.655 | 3000 | 100 V | 0.9 | 12.5 | 14 x 13 (imager) |
| 18 | 91.655 | 3000 | 100 H | 0.9 | 12.5 | 14 x 13 (imager) |
| 19 | 63.283248±0.285271 | 3 | 0.08 RCP | 2.4 | 75 | 75 x 75 |
| 20 | 60.792668±0.357892 | 3 | 0.08 RCP | 2.4 | 75 | 75 x 75 |
| 21 | 60.792668±0.357892±0.002 | 6 | 0.08 RCP | 1.8 | 75 | 75 x 75 |
| 22 | 60.792668±0.357892±0.006 | 12 | 0.12 RCP | 1.0 | 75 | 75 x 75 |
| 23 | 60.792668±0.357892±0.016 | 32 | 0.34 RCP | 0.6 | 75 | 75 x 75 |
| 24 | 60.792668±0.357892±0.050 | 120 | 0.84 RCP | 0.7 | 37.5 | 75 x 75 |
RCP - denotes right-handed circular polarization
Source: NSIDC SSMIS page (
nsidc.org/data/docs/daac/ssmis_instrument/index.html
)
