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← ScienceWhich image degradation occurs when synthetic aperture radar (SAR) uses non-ideal coherence?
A)Speckle noise reduces image clarity✓
B)Geometric distortion causes target displacement
C)Atmospheric refraction blurs fine details
D)Polarization shift misinterprets surface texture
💡 Explanation
Loss of coherence in SAR causes speckle, because interference becomes random, increasing noise rather than producing a clear image. Therefore speckle occurs rather than refraction or polarization shift, even though those might degrade other image characteristics.
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