Phase Locked Loops (PLLs) in 10 Gb/s and faster data links are low phase noise devices. Characterization of their phase jitter transfer functions is difficult because the intrinsic noise of the PLLs is comparable to the phase noise of the reference clock signal. The problem is solved by using a ...Download Now
Parallel implementation of a three-dimensional Direct Simulation Monte Carlo (DSMC) code is detailed that employs shared memory system using Open Multi-Processing (OpenMP). Several techniques to optimize the serial implementation of the DSMC method are also discussed. The synchronizations in OpenMP, as well as the related critical sections, have been identified ...Download Now
This paper presents from a "first principles" approach how the Viking parachute stability problem was identified and the design solution proposed that would both satisfy Viking design heritage and MPF EDL stability requirement. The design goal of the MPF PDS became to provide a modified Viking DGB parachute configuration which ...Download Now
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