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Satellite System. Mirza Muhammad Waqar Contact: mirza.waqar@ist.edu.pk +92-21-34650765-79 EXT:2257. RG610. Course: Introduction to RS & DIP. Contents. Satellite Remote sensing Remote Sensing Process Sensor types Major satellites system Resolutions Low Resolution Satellite Systems
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Satellite System Mirza Muhammad Waqar Contact: mirza.waqar@ist.edu.pk +92-21-34650765-79 EXT:2257 RG610 Course: Introduction to RS & DIP
Contents • Satellite Remote sensing • Remote Sensing Process • Sensor types • Major satellites system • Resolutions • Low Resolution Satellite Systems • Medium Resolution Satellite Systems • High Resolution Satellite Systems
Satellite Orbits • Polar‐orbiting, sun‐synchronous. • approx 800‐900 km altitude, 90‐100 minutes/ orbit, round the Earth in a polar direction and with each orbit pass over the equator about 30 degree west of the previous orbit. • Geostationary (geo‐synchronous). • approx 35,900 km altitude, 24 hrs/orbit • stationary relative to Earth. • traveling at the same speed as the rotation of the Earth.
Characterizing the Resolutions • With respect to Spatial resolution: • High spatial resolution: < 4 m • Medium spatial resolution: 4 m ‐30 m • Low spatial resolution: > 30 m • With respect to Spectral resolution: • High spectral resolution: > 15 bands • Medium spectral resolution: 3 ‐ 15 bands • Low spectral resolution: < 3 bands • With respect to Temporal resolution: • High temporal resolution: < 3 days • Medium temporal resolution: 3 ‐ 16 days • Low temporal resolution: > 16 days
Ikonos image • 1m IKONOS view of Dubai
Ikonos Image • 1m IKONOS pan image of Rome
SPOT • SPOT (Systeme Pour l’ Observation de la Terre) • SPOT 1 launched 1986, decommissioned and the reactivated in 1997 • SPOT 2 launched 1990, still going • SPOT 3 launched 1993 and stopped functioning 1996 • SPOT 4 launched in 1998, still going • SPOT 5 launched in 2002
LANDSAT • First started by NASA in 1972 but later turned over to NOAA.
LANDSAT Imagery shows wetlands, urban, open water, forest
Meteosat • Geostationary meteorological satellites • Operator: EUMETSAT • Start of Program: 1977 Three Phases: • –Meteosat Operational Program (MOP) 1977 ‐ 1995 • –Meteosat Transition Program(MTP)1995‐2004 • –Meteosat Second Generation (MSG) 2004 onwards • Current satellite Meteosat‐9 (MSG‐2)
Meteosat imagery West Africa dust storm