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In-Flight Guidance, Navigation, and Control Performance Results for the GOES-16 SpacecraftThe Geostationary Operational Environmental Satellite-R Series (GOES-R), which launched in November 2016, is the first of the next generation geostationary weather satellites. GOES-R provides 4 times the resolution, 5 times the observation rate, and 3 times the number of spectral bands for Earth observations compared with its predecessor spacecraft. Additionally, Earth relative and Sun-relative pointing and pointing stability requirements are maintained throughout reaction wheel desaturation events and station keeping activities, allowing GOES-R to provide continuous Earth and sun observations. This paper reviews the pointing control, pointing stability, attitude knowledge, and orbit knowledge requirements necessary to realize the ambitious Image Navigation and Registration (INR) objectives of GOES-R. This paper presents a comparison between low-frequency on-orbit pointing results and simulation predictions for both the Earth Pointed Platform (EPP) and Sun Pointed Platform (SPP). Results indicate excellent agreement between simulation predictions and observed on-orbit performance, and compliance with pointing performance requirements. The EPP instrument suite includes 6 seismic accelerometers sampled at 2 KHz, allowing in-flight verification of jitter responses and comparison back to simulation predictions. This paper presents flight results of acceleration, shock response spectrum (SRS), and instrument line of sight responses for various operational scenarios and instrument observation modes. The results demonstrate the effectiveness of the dual-isolation approach employed on GOES-R. The spacecraft provides attitude and rate data to the primary Earth-observing instrument at 100 Hz, which are used to adjust instrument scanning. The data must meet accuracy and latency numbers defined by the Integrated Rate Error (IRE) requirements. This paper discusses the on-orbit IRE results, showing compliance to these requirements with margin. During the spacecraft checkout period, IRE disturbances were observed and subsequently attributed to thermal control of the Inertial Measurement Unit (IMU) mounting interface. Adjustments of IMU thermal control and the resulting improvements in IRE are presented. Orbit knowledge represents the final element of INR performance. Extremely accurate orbital position is achieved by GPS navigation at Geosynchronous Earth Orbit (GEO). On-orbit performance results are shown demonstrating compliance with the stringent orbit position accuracy requirements of GOES-R, including during station keeping activities and momentum desaturation events. As we show in this paper, the on-orbit performance of the GNC design provides the necessary capabilities to achieve GOES-R mission objectives.
Document ID
20170004851
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Chapel, Jim
(Lockheed Martin Space Systems Co. Denver, CO, United States)
Stancliffe, Devin
(Lockheed Martin Space Systems Co. Denver, CO, United States)
Bevacqua, Tim
(Lockheed Martin Space Systems Co. Denver, CO, United States)
Winkler, Stephen
(Lockheed Martin Space Systems Co. Denver, CO, United States)
Clapp, Brian
(Lockheed Martin Space Systems Co. Denver, CO, United States)
Rood, Tim
(Advanced Solutions, Inc. Littleton, CO, United States)
Freesland, Doug
(ACS Engineering Corp. Greenbelt, MD, United States)
Reth, Alan
(Chesapeake Aerospace, LLC Grasonville, MD, United States)
Early, Derrick
(Chesapeake Aerospace, LLC Grasonville, MD, United States)
Walsh, Tim
(National Oceanic and Atmospheric Administration Greenbelt, MD, United States)
Krimchansky, Alexander
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
June 1, 2017
Publication Date
May 29, 2017
Subject Category
Spacecraft Instrumentation And Astrionics
Report/Patent Number
GSFC-E-DAA-TN42022
Meeting Information
Meeting: International ESA Conference on Guidance, Navigation & Control Systems
Location: Salzburg
Country: Austria
Start Date: May 29, 2017
End Date: June 2, 2017
Sponsors: European Space Agency
Funding Number(s)
CONTRACT_GRANT: NNG15CR65C
CONTRACT_GRANT: NNG09HR00C
Distribution Limits
Public
Copyright
Public Use Permitted.
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