HRVIR

Haute Résolution dans le Visible et l’Infra-Rouge

Satellite

SPOT-4

Status

Operational – Utilised in the period: 1998 to ~ 2012

Mission

Land and vegetation observation. Digital Elevation Model (DEM)

Instrument type

Two parallel radiometers, 4 VIS/NIR/SWIR multi-spectral (MS) channels, one also panchromatic (PAN)

Scanning technique

Bushbroom, 3000 pixel/line (MS), 6000 pixel/line (PAN), swath 60 km ssp (117 km with two instruments), cross-track pointing capability within a range of ± 450 km. Stereoscopic capability between successive orbits

Coverage/cycle

Global coverage in 26 days, in daylight. With strategic pointing, one place can be observed every 3 days.

Resolution (s.s.p.)

20 m (MS), 10 (PAN)

Resources

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

Central wavelength

Spectral interval

Radiometric accuracy (SNR)

0.545 µm

0.50 – 0.59 µm

…... @ ….. % albedo

0.645 µm (MS)

0.61 – 0.68 µm

…... @ ….. % albedo

0.645 µm (PAN)

0.61 – 0.68 µm

…... @ ….. % albedo

0.84 µm

0.79 – 0.89 µm

…... @ ….. % albedo

1.64 µm

1.58 – 1.75 µm

…... @ ….. % albedo