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← ScienceWhich mechanism impairs satellite communication using circularly polarized beams under heavy rainfall?
A)Differential scattering induces depolarization✓
B)Refraction causes frequency band splitting
C)Diffraction decreases signal coherence length
D)Absorption reduces signal intensity uniformly
💡 Explanation
Differential scattering causes depolarization wherein raindrops of varied sizes scatter radio waves unequally, thus randomizing the polarization. This disrupts signal reception because the receiver assumes a specific rotational polarization state, therefore scattering is the major impairment rather than absorption.
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