What does the term 'spectral signature' mean in remote sensing?
A. The color of the object
B. The unique pattern of reflectance/emission of an object across wavelengths
C. The spatial resolution of the image
D. The satellite orbit height
Answer: Option B
Solution (By Examveda Team)
Spectral signature is the specific way different materials reflect or emit electromagnetic radiation across wavelengths.This helps identify and classify surface materials.This Question Belongs to Geological Engineering >> Remote Sensing And GIS In Geological Engineering
What is the primary principle behind remote sensing?
A. Collecting data by direct contact
B. Observing Earth from a distance using sensors
C. Drilling to collect soil samples
D. Using underground radar
Which of the following is an active remote sensing technique?
A. Aerial photography
B. LiDAR (Light Detection and Ranging)
C. Thermal infrared imaging
D. Multispectral scanning
Which GIS component is responsible for spatial data analysis?
A. Hardware
B. Software
C. Data
D. People
In remote sensing, what does spectral resolution refer to?
A. Size of the area covered
B. Ability to distinguish between different wavelengths
C. Number of pixels in the image
D. Time between image acquisitions
Join The Discussion