Which of the following techniques can be used to generate DEMs?
A) All of these are correct
B) Only Optical sensors and LiDAR
C) Optical sensors
D) LiDAR
E) InSAR

Question

Quizplus · Accepted Answer

All the mentioned techniques, including Optical sensors, LiDAR, and InSAR, are used to generate Digital Elevation Models (DEMs). Optical sensors can capture surface features which can be processed to derive elevation data. LiDAR uses laser pulses to directly measure the distance to the Earth's surface, providing highly accurate elevation data. InSAR involves the use of radar signals from satellites to create elevation maps. Therefore, all these methods are correct in the context of generating DEMs.

Which of the Following Techniques Can Be Used to Generate