Thematic Mapper (TM)
TM |
Thematic Mapper |
Satellites |
Landsat 4 and 5 |
Status |
Operational – Utilised in the period 1982 to ~ 2010 |
Mission |
Land and vegetation observation |
Instrument type |
VIS/NIR radiometer, 6 short-wave channels, one in TIR |
Scanning technique |
Wiskbroom; 6000 pixel/line (6 short-wave channels), 1500 pixel/line (TIR); swath 185 km |
Coverage/cycle |
Global coverage in 16 days, in daylight. |
Resolution (s.s.p.) |
30 m (6 short-wave channels), 120 m (TIR) |
Resources |
Mass: 258 kg - Power: 332 W - Data rate: 85 Mbps |
Central wavelength |
Spectral interval |
Radiometric accuracy (SNR) |
0.48 µm |
0.45 - 0.52 µm |
60 @ ….. % albedo |
0.56 µm |
0.52 - 0.60 µm |
60 @ ….. % albedo |
0.66 µm |
0.63 - 0.69 µm |
46 @ ….. % albedo |
0.83 µm |
0.76 - 0.90 µm |
46 @ ….. % albedo |
1.65 µm |
1.55 - 1.75 µm |
36 @ ….. % albedo |
2.20 µm |
2.08 - 2.35 µm |
28 @ ….. % albedo |
11.45 µm |
10.4 - 12.5 µm |
0.5 K @ 300 K |