Enhanced Thematic Mapper + (ETM+)
ETM+ |
Enhanced Thematic Mapper + |
Satellite |
Landsat-7 |
Status |
Operational – Utilised in the period 1999 to ~ 2012 |
Mission |
Land and vegetation observation |
Instrument type |
VIS/NIR radiometer, 6 VIS/NIR narrow-band channels, one panchromatic (PAN), one in TIR |
Scanning technique |
Wiskbroom; 6000 pixel/line (narrow-band), 12000 pixel/line (PAN), 3000 pixel/line (TIR); swath 185 km |
Coverage/cycle |
Global coverage in 16 days, in daylight. |
Resolution (s.s.p.) |
30 m (6 narrow-band channels), 15 m (PAN), 60 m (TIR) |
Resources |
Mass: 441 kg - Power: 590 W - Data rate: 150 Mbps |
Central wavelength |
Spectral interval |
Radiometric accuracy (SNR) |
0.48 µm |
0.45 - 0.52 µm |
32 @ ….. % albedo |
0.56 µm |
0.53 - 0.61 µm |
35 @ ….. % albedo |
0.66 µm |
0.63 - 0.69 µm |
26 @ ….. % albedo |
0.83 µm |
0.78 - 0.90 µm |
32 @ ….. % albedo |
1.65 µm |
1.55 - 1.75 µm |
25 @ ….. % albedo |
2.20 µm |
2.09 - 2.35 µm |
17 @ ….. % albedo |
Panchromatic |
0.50 - 0.90 µm |
15 @ ….. % albedo |
11.45 µm |
10.4 - 12.5 µm |
0.5 K @ 300 K |