5 Questions
What is the primary cause of fading in a coherent imaging system?
Variation in the phase delay caused by multiple targets in a resolution cell with range variations differing by less than a wavelength
What is the characteristic appearance of speckle in radar images?
A grainy, 'salt and pepper' texture
What is the result of constructive interference in a coherent imaging system?
Bright speckles in the image
What is the term for the fixed relationship between waves in a beam of electromagnetic radiation?
Coherence
What is the primary source of image artifacts in radar imagery?
Speckle and fading
Test your understanding of the limitations and challenges in interpreting RADARSAT images, including difficulties in detecting targets over variable backgrounds, ambiguities, and effects of slow sampling. This quiz covers the concepts of azimuth ambiguity, range ambiguity, and nadir return in RADARSAT image analysis.
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