In active microwave remote sensing, why can a radar system acquire data during both day and night?

Because the sensor provides its own electromagnetic illumination

Which statement best explains why microwave remote sensing is often preferred over optical sensing under cloudy conditions?

Microwave wavelengths can penetrate clouds much better than visible wavelengths

A radar target shows strong return in HH and VV channels but very weak return in HV. The dominant scattering mechanism is most likely

single-bounce surface scattering from a relatively smooth target

For a smooth water surface observed by a microwave radar at moderate incidence angle, the backscatter is typically low mainly because of

specular reflection directing most energy away from the radar

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GATE Geomatics Engineering Practice Quiz

Includes surveying, geographic information systems (GIS), remote sensing, and geospatial analysis, for applications in mapping and urban planning.

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5 students have taken GATE Geomatics Engineering practice quizzes across 3 quizzes — with top scores up to 80%. Free, with instant scoring, a live leaderboard and AI analysis.

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5 attempts on GATE Geomatics Engineering quizzes

Ram prakash scored 7/10 on Microwave Remote Sensing Principles SNEH LATA KUMARI scored 3/10 on Microwave Remote Sensing Principles Ram scored 8/10 on Coordinate Systems and Datums yub scored 7/10 on Coordinate Systems and Datums Ram scored 3/10 on Map Projections and Distortions Ram prakash scored 7/10 on Microwave Remote Sensing Principles SNEH LATA KUMARI scored 3/10 on Microwave Remote Sensing Principles Ram scored 8/10 on Coordinate Systems and Datums yub scored 7/10 on Coordinate Systems and Datums Ram scored 3/10 on Map Projections and Distortions

Microwave Remote Sensing Principles Advanced Challenge | GATE Geomatics Engineering

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10 Qs · ~10 min

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5/10avg score

7/10best

Coordinate Systems and Datums Fundamentals | GATE Geomatics Engineering

10 Qs · ~10 min

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7.5/10avg score

8/10best

Map Projections and Distortions Fundamentals | GATE Geomatics Engineering

10 Qs · ~10 min

Instant score, answer review and weak-topic diagnosis

3/10avg score

3/10best