15 Questions
What is the primary purpose of multi-looking in SAR image processing?
To reduce speckle noise in the final image
What is the effect of speckle reduction by spatial filtering on the output image?
It enhances radiometric resolution
What is the cause of azimuth ambiguity in SAR images?
Platform or sensor problems
What is the result of a single look image in SAR processing?
An image with the highest achievable resolution and containing speckle
What is the purpose of reprocessing in SAR image analysis?
To improve image radiometrics and geometrics
What is the term for the bright linear features that appear at approximately constant range in SAR images?
Nadir Ambiguity
What is the term for the corduroy-like radiometric banding that appears across the scene in SAR images?
Scalloping
What is the term for the pattern of spatial tone variations in SAR images?
Texture
What is the term for the unwanted brightness variation in SAR images caused by radar artifacts?
Radar Artifacts
What is the term for the simultaneous returns from the desired illuminated region and a previously or successively transmitted pulse in SAR images?
Range Ambiguity
What is the primary cause of speckle in SAR imagery?
Random constructive and destructive interference from multiple scattering returns
What is the effect of speckle on the quality of SAR images?
It degrades the quality of the image, making interpretation more difficult
What is the purpose of multiple-look filtering in SAR imagery?
To reduce the effects of fading and speckle
What is the result of averaging independent samples in SAR imagery?
Effective reduction of the effects of fading and speckle
What is the appearance of a homogeneous target, such as a grass-covered field, in an SAR image without speckle?
Light-toned pixels
Test your understanding of remote sensing image processing techniques, including multi-looking and speckle reduction methods. Learn how to enhance radiometric resolution and reduce spatial resolution. This quiz covers concepts relevant to image analysis in a digital environment.
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