Radar grammetry

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Radargrammetry is a method for the geometric evaluation of radar images that has extensive analogies to photogrammetry .

principle

The same principles apply to radar beams and light as to other electromagnetic waves. The waves propagate in a straight line in a vacuum . The deflection of a wave occurs mainly through the phenomena reflection , scattering , diffraction and refraction . Therefore, in radargrammetry, the methods of image measurement and beam block adjustment known from photogrammetry can be used to reconstruct the spatial position of individual points on the object or earth surface .

Because of the higher geometrical resolution that can be achieved, nowadays mainly Synthetic Aperture Radar (SAR) is used as an imaging system in the microwave range.

Applications

The main application of the radar grammetric evaluation of SAR images is the creation of three-dimensional digital terrain models. This principle is in direct competition with SAR interferometry.

literature