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Utilization of Unsupervised Anomalies Detector as a Tool for Managing the TDRS Constellation at GSFCNASA’s Goddard Space Flight Center (GSFC) operates a constellation of ten geosynchronous Tracking and Data Relay Satellites (TDRS). The mission of the TDRS constellation is to provide relay communications from low-earth orbiting spacecraft to the primary ground station at the White Sands Complex in Las Cruces, New Mexico. Major customers include the International Space Station and Hubble Space Telescope. The NASA Space Network project office at GSFC manages the constellation of spacecraft. The constellation is over 30 years old, and a wide range of technologies and manufacturing techniques are represented on-orbit. Since 1983, the TDRS constellation has recorded thousands of gigabytes of telemetry data. Spacecraft telemetry data has changed throughout the three generations of TDRS spacecraft, however each spacecraft has the same basic functions with some generational enhancements. The constellation includes several spacecraft that have significantly outlived the manufacturer's projected lifetime. This has provided NASA with a significant benefit in terms of return on investment, however it places a burden on efficient management of the assets for maximum life without permitting a TDRS spacecraft to become stranded in its geosynchronous orbital slot. Consequently, the highest level of attention is paid to systems whose failure could strand a TDRS spacecraft in orbit. In this paper, we proposed two stages of analyzing spacecraft anomalies using data mining (DM) to enhance on-going predictions of spacecraft life, subsystem performance, and analysis of subsystem anomalies. The first stage conducts the unsupervised anomaly detector to detect potential anomalies in real-time telemetry data. The second stage introduced telemetry weight (TW) to each telemetry parameter to determine which parameter caused the strongest anomaly. We will present case studies of some of these analyses and how the data can impact decisions on the management of the constellation.
Document ID
20190032367
Document Type
Presentation
Authors
Ma, Kenneth Y. (Peraton Inc. Herndon, VA, United States)
Montoro, Manuel (Stinger Ghaffarian Technologies Inc. (SGT Inc.) Greenbelt, MD, United States)
Shaw, Harry (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mihir, Patel (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Woods, Lawrence (Peraton Inc. Herndon, VA, United States)
Williams, Thomas (Stinger Ghaffarian Technologies Inc. (SGT Inc.) Greenbelt, MD, United States)
Steele, Jonathan (Peraton Inc. Herndon, VA, United States)
Cunnif, David (Western Commercial Space Center, Inc. Lompoc, CA, United States)
Bonacci, Carissa Brealey (Western Commercial Space Center, Inc. Lompoc, CA, United States)
Miller, Ronald (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Zuby, John (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
October 29, 2019
Publication Date
October 21, 2019
Subject Category
Space Communications, Spacecraft Communications, Command and Tracking
Report/Patent Number
GSFC-E-DAA-TN73802-2
Meeting Information
International Astronautical Congress (IAC)(Washington, DC)
Distribution Limits
Public
Copyright
Public Use Permitted.

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