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