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Dr. Zhenping Li
A Machine Learning Framework for Space Mission Situational Awareness
Wednesday, April 17, 2019
Building 34 Room W150- 11:00 AM
(Cookies at 10:30 AM)
The NOAA GOES-R Advanced Baseline Imager (ABI) is a new generation of complex science instruments designed for weather science. The ABI implements 7000+ operational sensors, more than several hundred times more sensors that its predecessors (e.g. GOES-N mission), creating a Big-Data challenge for sensor calibration and failure detection. Under the Goddard/SES-II contract, Dr. Zhenping Li designed and implemented Machine Learning algorithms to determine which of the ABI sensors require calibration or are failing (approaching or at saturation) in near real-time.
A machine learning (ML) framework has been developed for space mission situational awareness that enables anomaly detection, dynamic data filtering and sensor data quality assessment. The ML framework forgoes simple monitoring for high and low telemetry limits, to instead algorithmically remove variations induced by the cyclical behavior of the orbital environment. The ML framework covers four areas; an ML architecture model, ML algorithms and formulas for satellite datasets, a scalable and extensible ML platform, and the ML application portfolio. The ML architecture model defines how a ML system interacts with space and ground assets, ML functionalities, the interfaces among different ML processes, and the ML framework operational concept. ML algorithms and formulas include data representation, data training, anomaly detection and characterization, and the creation of actionable information for mission enterprise situational awareness. The ML platform is a software implementation of an ML architecture model that addresses the challenges of ML solutions in operational environments. The ML application portfolio focuses the applications of the ML framework on the health and safety of satellites and onboard instruments with differing orbital characteristics. The Advanced Intelligent Monitoring System (AIMS) implements the ML platform to provide a common infrastructure and services, while ML algorithms are treated as plug-and-play components. Application of the ML framework to Geostationary Environment Operational Satellite (GOES) instrument data, as well as health and safety data for the Suomi National Polar-orbiting Partnership (NPP), are presented showing that the ML framework brings fundamentally improved insight into space situational awareness for space missions. The ML approach enables early anomaly detection, rapid anomaly response, and significant improvements in system resiliency.
Zhenping Li: Received his PhD in Physics from The University of Tennessee in 1992, a Master of Science in Computer Science from Johns Hopkins University in 2003, and joined ASRC Technical Services in 2013. He has more than 20 years of experience in aerospace industry with the main focus in satellite ground systems. His current research interests are algorithmic development for satellite instrument data processing and the application of machine learning algorithms to satellite operations. Since 2015, he developed and continues to mature the Advance Intelligent Monitoring System (AIMS), most recently deployed for GOES-R mission operations. He delivered a tutorial session “Developing Machine Learning Solutions for Space Missions” at the 2018 Ground System Architecture Workshop (GSAW) and a “Build a Machine Learning Infrastructure in the Ground Enterprise for Space Missions” tutorial at the 2019 GSAW.
IS&T Colloquium Committee Host: Dr. Daniel Duffy
Sign language interpreter upon request: 301-286-7348
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