Advancing NASA’s On-Board Processing Capabilities with Reconfigurable FPGA Technologies

Pingree, Paula J.

doi:10.5772/6938

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…In fact, there are now more powerful spaceflight processors available, such as the 1 GHz PROTON-200k, the 1.5 GHz PROTON-400k-3X, and the 3 GHz PROTON-200k-3X. § Reconfigurable field programmable gate arrays can also be used for spacecraft missions with large processing demands [39]. It should finally be noted that RWs are used for nonagile maneuvers [40].…”

Section: Discussion On Real-time Applicationsmentioning

confidence: 99%

Model Predictive Control of an Underactuated Spacecraft with Two Reaction Wheels

Petersen

Leve

Kolmanovsky

2017

Journal of Guidance, Control, and Dynamics

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This paper presents an application of model predictive control to the attitude dynamics of an underactuated spacecraft with two reaction wheels and zero angular momentum. Such a system cannot be stabilized by any smooth or continuous time-invariant feedback law. However, model predictive control has a remarkable ability to generate control laws that are discontinuous in the state and, as such, can be applied to this problem. The model predictive control formulation is analyzed in depth and shown to produce an asymptotically stabilizing controller, which is discontinuous and enforces constraints. Simulations on the full nonlinear model demonstrate that model predictive control can successfully control the attitude of an underactuated spacecraft when the attitude maneuvers are sufficiently small.

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Section: Discussion On Real-time Applicationsmentioning

confidence: 99%

Model Predictive Control of an Underactuated Spacecraft with Two Reaction Wheels

Petersen

Leve

Kolmanovsky

2017

Journal of Guidance, Control, and Dynamics

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An FPGA-Based Solution for Computing a Local Stationarity Measure From Satellite Data

et al. 2022

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The analysis of data variability from in-situ observations is essential for scientists and space mission controllers. Given the limited resources available on-board a spacecraft as well as the presence of the Field-Programmable Gate Arrays (FPGA) devices in modern spacecraft architectures, an efficient real-time monitoring solution should be deployed on these devices to use minimal computational and energy resources, and to reduce the main on-board computer utilization, thus making it available for other tasks. This paper describes the implementation of an algorithm for computing a local stationarity measure (LSM) on FPGA devices. The algorithm tests weak stationarity from the convergence of the partial means of the signal computed on subsets of increasing length, compared to the overall mean of the signal over a fixed-length running window; the window spans the entire signal. The algorithm is designed for an on-board implementation which monitors and detects changes of variables measured in-situ by scientific instruments (e.g., magnetometers). The design was tested with synthetic and real-time signals and provides results in very good agreement with a dedicated data analysis library specifically designed for the analysis of satellite data.INDEX TERMS FPGA-based design, High-Level Synthesis (HLS), local stationarity measure (LSM), magnetic field monitoring, satellites on-board processing, weak stationarity test

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On-board detection and matching of remotely sensing imagery

Huang

Zhou

Zhang

2017

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

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Advancing NASA’s On-Board Processing Capabilities with Reconfigurable FPGA Technologies

Cited by 4 publications

References 11 publications

Model Predictive Control of an Underactuated Spacecraft with Two Reaction Wheels

Model Predictive Control of an Underactuated Spacecraft with Two Reaction Wheels

An FPGA-Based Solution for Computing a Local Stationarity Measure From Satellite Data

On-board detection and matching of remotely sensing imagery

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