This is basically how much area is able to be captured by the sensor at a time, or how many and how small its pixels are. Every sensor will have a certain spatial resolution. Like a normal camera, different satellite sensors have different capabilities. On the other hand, active sensor satellites emit their own radiation and analyze it as it reflects back to the satellite. Passive sensor satellites collect data about the Earth via electromagnetic radiation that is emitted by the sun and reflects off the Earth. These are active sensors and passive sensors. There are two broad categories of imaging satellites’ sensors. Here are some of the ways that satellites and their sensors can vary. There are different kinds of sensors and different methods for acquiring satellite images.
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