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Satellite Proximity Detection Using Multi-Function Space-Based Sensors

As countries enter into space programs, both low earth orbit (LEO) and geosynchronous earth orbit (GEO) satellites are increasingly subjected to an ever-increasing risk of collision with resident space objects. Sensors are becoming necessary to observe and measure the proximity of a satellite to determine the risks posed from kinetically approaching manmade and natural hazards. Volume, mass, and power on satellites is limited and risk management approaches tend to remove such sensors from satellite systems.With newer system engineering approaches, however, the traditional sensors used for navigation and measurement can be modified to sense the environment for hazards and obtain more information from what was previously a single function device.