Remote Sensing Quiz

What is the primary motivation for collecting information using satellite imagery and aerial photographs in GIS?

• To monitor change over time

• To create landcover data layers

• To detect and monitor change

• To collect information regarding the location and characteristics of features

What is the instantaneous field of view (IFOV) of a detector in satellite imagery?

What are the primary subsystems of remote sensing satellites?

• Power supply, spectral resolution, data storage

• Powersupply, precise orbital and altitude control, data storage

• Data storage, communication, spectral resolution

• Communication, navigation, positioningsubsystems

What is the purpose of spectral resolution in remote sensing?

What is the temporal resolution of a sensor in remote sensing?

What is the purpose of radiometric resolution in remote sensing?

What is the main advantage of satellite images over aerial images in GIS?

What is the primary use of satellite images in GIS?

• To monitor change over time

• To create landcover data layers

• To detect and monitor change

• To determine the size of the field-of-view

What is the main factor to consider when selecting an image source for GIS?

• The spatial detail required in the analysis

• The spectral resolution of the sensor

• The frequency of new data required

• The number of brightness levels that can be presented

What is the primary difference between satellite images and aerial photographs in terms of acquisition?

• Satellite images are often available from local/national government sources

• Aerial image acquisition dates are flexible and can be easily adjusted

• Aerial images are made publicly available by various space agencies

• Satellite image acquisition follows fixed flight schedules