Abstract
On September 23rd, 2012, the Geostationary Operational Environmental Satellite (GOES)-13, Imager was placed in standby in response to a spacecraft vibration anomaly that was ultimately determined to be caused by a malfunctioning filter wheel in the Sounder instrument. Several days prior to this event, GOES-13 Imager Channel 3 imagery exhibited oscillatory noise that was visually apparent. In response, a Fourier coherent noise analysis was performed using GOES-13 Imager space data. The analysis confirmed a noise frequency calculation by the National Oceanic and Atmospheric Administration (NOAA) Office of Satellite and Product Operations (OSPO) and showed that the GOES-13 Imager Channel 2 was also exhibiting oscillatory noise. Using historical data, the Fourier analysis also showed that the GOES-13 Imager coherent noise originated on July 13th, 2012, which was not visually discernible. To provide potential warnings of future anomalies, an operational system was implemented that provides GOES-EAST and GOES-WEST Imager coherent noise measurements that are updated daily on the GOES Imager Data Quality Monitoring website.
GOES Coherent Noise Analysis and Online Monitoring
On September 23rd, 2012, the Geostationary Operational Environmental Satellite (GOES)-13, Imager was placed in standby in response to a spacecraft vibration anomaly that was ultimately determined to be caused by a malfunctioning filter wheel in the Sounder instrument. Several days prior to this event, GOES-13 Imager Channel 3 imagery exhibited oscillatory noise that was visually apparent. In response, a Fourier coherent noise analysis was performed using GOES-13 Imager space data. The analysis confirmed a noise frequency calculation by the National Oceanic and Atmospheric Administration (NOAA) Office of Satellite and Product Operations (OSPO) and showed that the GOES-13 Imager Channel 2 was also exhibiting oscillatory noise. Using historical data, the Fourier analysis also showed that the GOES-13 Imager coherent noise originated on July 13th, 2012, which was not visually discernible. To provide potential warnings of future anomalies, an operational system was implemented that provides GOES-EAST and GOES-WEST Imager coherent noise measurements that are updated daily on the GOES Imager Data Quality Monitoring website.