 | | | | |
| | | | | |
|
About Eduspace What is Eduspace?What tools does it offer? Choose your language Remote Sensing Principles What is remote sensing?Remote sensing in depthHistory of Earth observationMapping and satellite dataSatellite orbitsEarth observation satellites Resources Multimedia Image GalleryVideo GalleryServices Contact usSearch in Eduspace
| | | | | | | | | Stereoscopic sensing by SPOT is used in elevation calculations | |
SPOT
The French 'Système Probatoire d'Observation de la Terre' includes the so-called SPOT satellite, which was launched on 21 February 1986. This satellite can sense in three spectral bands, green, red and the near infrared, with a resolution of 20 metres. Furthermore, it is equipped with a panchromatic scanner, which means that it scans within a band which includes the green and red ranges of visible light. The spatial resolution for this sensor is 10 metres, for many years the highest resolution for a non-military sensor.
| | | The SPOT satellite can sense in three spectral bands |
SPOT has a special feature that allows it to be programmed to 'look sideways' and scan the same strip twice under two consecutive overpasses. The two different visual angles on the same area give a stereoscopic effect, which makes it possible to map elevation conditions.
As SPOT has two visual and one near infrared channel, it is ideally suited for vegetation mapping of small local areas.
| |
| | Earth observation satellites IntroductionLandsatERSRESURSEnvisatMeteorological satellites MeteosatMeteosat Second GenerationMetOpNOAAEarth Explorer satellites IntroductionGOCESMOSCryoSat-2Commercial high resolution optical satellites IKONOSQuickBirdWorldViewRelated links Spot ImageTechnical specifications - SPOT
|
