Designing a next generation free-flying autonomous robot [see Figure 1], scheduled to be deployed on the International Space Station (ISS) in 2017, is no trivial task. The NASA Astrobee will serve as a robotic assistant to offload routine, repetitive, but long-duration and CPU-intensive tasks  and replace a legacy and older free-flying robot.
Challenges in building the Astrobee avionics
The Astrobee has subsystems for structure, propulsion, power, guidance, navigation and control (GN&C), command and data handling (C&DH), thermal control, communications, docking mechanism, and a perching arm . As seen in the block diagram in Figure-2 , the avionics provides computation and communication resources for the Astrobee. The three compute platforms are the low- [LLP], mid- [MLP], and high-level-processor [HLP], which are configured to perform specific functions.
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