Which mechanism causes increased noise floor sensitivity in radioastronomy arrays?

💡 Explanation

Atmospheric wavefront aberration distorts the incoming radio waves through refraction. This increases incoherent background noise because random phase variations decorrelate signals. Therefore, aberration elevates the noise floor rather than instrumental artifacts or signal processing.

• Which risk increases when hydraulic cylinder's seals degrade in an excavator arm?
• Which outcome occurs when excess charge accumulates non-uniformly on an ionic crystal surface?
• Which outcome occurs when high-frequency resonant inductive coupling charges a shielded implantable medical device?
• Which outcome occurs when energy applied by voltage meets an electron within a reverse-biased semiconductor?
• Which limit worsens the power output when an urban district's geothermal plant exceeds groundwater recycling thresholds?
• Which phenomenon results from insufficient hydraulic fluid viscosity?