The SIGI system is intended to replace the shuttle's onboard tactical navigation system and, eventually, its inertial measurement units. The objective of this DTO is to evaluate the system's performance during space flight and assess the technical and schedule risks of using this new technology in the shuttle navigation systems.
In addition to demonstrating the new navigation system's performance in a realistic space vehicle environment during all mission phases, DTO 700-15 will prove the ability of the modified commercial military-grade unit to accurately perform all required functions and determine if any changes of the unit are needed to support navigation in space.
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