The SSC uses this information to compute a new element set, or prediction. This prediction is then sent back out to the sensors, and the cycle is repeated. SOI is the analysis of data from sensors to determine a satellite's size, shape, motion, orientation and operational status. SOI is a technical discipline that is similar to imagery interpretation. Optical Introduction a.
Optical sensors are basically telescopes, gathering light reflected off an object in space.
Cloud cover, fog, atmospheric pollution, light glow from cities or a full moon degrade or prevent observations. The size of the object to be tracked and its distance from Earth are also limiting factors. Baker Nunn Camera b. The BakerNunn camera is a large telescope with a camera attached. Imagery is recorded on film.