Satellite method for using radar interferometry to establish a digital terrain model
AssigneeCentre National D'Etudes Spatiales
InventorFrédéric Adragna
Life of this patent
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Abstract
The invention relates to a method which consists in launching one behind the other on two close orbits two satellites (S1, S2) each equipped with a high-resolution synthetic aperture radar observing the Earth under an angle of incidence of at least 40°, such that the radars observe independently of each other the same strip of terrain, with time interval not more than 10 seconds, preferably of not more than 4 seconds, and preferably not less than 2 seconds between their respective observations.
Claims9
A method of using radar interferometry to establish a digital terrain model of very high resolution for all or part of the terrestrial globe, by means of two satellites (S1, S2) flying in formation on two orbits that are close and provided with respective radars, the method comprising providing each satellite with a high resolution synthetic aperture radar, and causing the two satellites to orbit one behind the other at a time interval, each satellite radar observing the same strip of ground independently of the radar in the other satellite at an incidence of at least 40°, with the time interval of not more than 10 seconds between the respective independent observations.
Dependencies are inferred from the claim text.