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Questions and Answers
Radar shadow is an important key for terrain relief interpretation in radar imagery.
True
Foreshortening in a radar image leads to a relatively darker appearance of slopes.
False
Foreshortening is at a minimum when a steep slope is orthogonal to the radar beam.
False
The local incident angle is 90° when a steep slope is orthogonal to the radar beam.
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Foreshortening effects are increased with increasing incident angles.
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At the grazing angle, foreshortening effects are severe and shadowing may occur.
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There is no trade-off between the occurrence of foreshortening and shadowing in the image.
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Radar shadow can be used to interpret terrain relief in airborne SAR images.
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Foreshortening is the appearance of compression of those features in the scene which are tilted away from the radar.
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The horizontal displacement resulting from the large incident angles causes foreshortening of the slope facing the radar.
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