Which of the following is an advantage of radar over all other remote sensing techniques?
A) It can operate at high altitude.
B) It can operate at night.
C) It can operate in clear weather.
D) It can operate at wavelengths shorter than 1 micrometer.
E) It can operate without using an electrical source.

Question

Quizplus · Accepted Answer

Radar can operate at night because it relies on its own signal rather than external light sources. Other remote sensing techniques, such as optical imagery, require sunlight or other external sources of illumination.

Which of the Following Is an Advantage of Radar Over