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Guide

How do satellites take photographs of Earth?

How Earth-observation satellites capture images, what resolution and revisit time mean, and what the pictures are used for.

Cameras in orbit

Earth-observation satellites carry telescopes with digital sensors. As the satellite moves along its orbit, the sensor sweeps across the ground and records a strip of the surface, a method often called pushbroom imaging.

Resolution and coverage

Resolution is measured by ground sample distance, the size of the ground area covered by one pixel. Sharper images cover smaller areas. Swath width is how wide a strip the satellite sees in one pass.

Revisit time

A single satellite passes over the same place only now and then. More satellites in a network means the same place can be photographed more often, which matters for tracking change.

What the pictures are used for

Mapping, farming, forest and water monitoring, weather and flood tracking, city planning and disaster response all rely on satellite images.

Where Aerosoul fits

We plan a satellite network that can help people take lots of photographs of Earth as well as provide faster internet. This is a long-term plan for a new company.

Learn more about Aerosoul satellites and aerospace

Let's build what comes next.

Questions, partnerships or investment. We'd like to hear from you.