Adaptive Self-Tuning of Signal Detection Parameters

• Main Authors: Draelos, Timothy J., Peterson, Matthew Gregor, Knox, Hunter Anne, Lawry, Benjamin James, Young, Christopher J., Chael, Eric, Philips-Alonge, Kristin, Ziegler, Abra, Faust, Aleksandra
• Language: unknown
• Published: 2021
• Subjects: 58 GEOSCIENCES; Mount Erebus; Antarc*; Antarctica
• Online Access: http://www.osti.gov/servlets/purl/1596198; https://www.osti.gov/biblio/1596198; https://doi.org/10.2172/1596198

The quality of automatic detections from sensor networks depends on a large number of data processing parameters that interact in complex ways. The largely manual process of identifying effective parameters is painstaking and does not guarantee that the resulting controls are the optimal configuration settings, yet achieving superior automatic detection of events is closely related to these parameters. We present an automated sensor tuning (AST) system that tunes effective parameter settings for each sensor detector to the current state of the environment by leveraging cooperation within a neighborhood of sensors. After a stabilization period, the AST algorithm can adapt in near real-time to changing conditions and automatically self-tune a signal detector to identify (detect) only signals from events of interest. The overall goal is to reduce the number of missed legitimate event detections and the number of false event detections. Our current work focuses on reducing false signal detections early in the seismic signal processing pipeline, which leads to fewer false events and has a significant impact on reducing analyst time and effort. Applicable both for existing sensor performance boosting and new sensor deployment, this system provides an important new method to automatically tune complex remote sensing systems. Systems tuned in this way will achieve better performance than is currently possible by manual tuning, and with much less time and effort devoted to the tuning process. With ground truth on detections from a seismic sensor network monitoring the Mount Erebus Volcano in Antarctica, we show that AST increases the probability of detection while decreasing false alarms.