Subsurface Object Characterization
Integrated Sensor System
ENSCO scientists have long been recognized as experts in the application of geophysical ground sensors to passive monitoring of underground sources. ENSCO engineers and scientists are developing an Integrated Sensor System (ISS) consisting of networked seismic, acoustic, and magnetic sensor monitoring system to support the DTRA Find, Characterize, and Assess (FCA) program. The ISS collects and analyzes signals from underground sources, locates the source of the signals, and characterizes the identity of the sources. The ISS nodes communicate with each other over a wireless RF mesh network and send results over satellite to a situation assessment workstation.
Sensor Deployment Planning Tool
ENSCO has developed the Sensor Deployment Planning Tool (SDPT) to plan sensor deployments and assess potential ground-sensor performance for detecting and locating underground sources. SDPT uses one and two-dimensional signal propagation modeling to compute sensor response for hypothesized underground sources and presents the results as overlays on maps, topographic data, and imagery in a geographic information system (GIS) graphical user interfaces.
Sensor Integration and Data Fusion Tool
ENSCO has developed a sensor integration tool called ESPIER (Old French meaning "to watch") which combines multiple sensor inputs to characterize underground sources. ESPIER integrates sensor detections to form events, locate them, and characterize their identity using rules and Bayesian belief network decision support tools. ESPIER also integrates with geographic information systems (GIS) user interfaces to display characterization results on maps and imagery.
Sensor Signatures Database
ENSCO has been developing a relational database containing seismic, acoustic, and magnetic sensor signature data for equipment and explosion sources that have been recorded at various test beds. The Signatures Database stores signature data and a variety of signal analysis products which are linked to the test information and the metadata about the sensors which collected the data. The database can be searched for signatures of specific equipment source types or for information associated with specific tests. The Signatures Database provides links to the Construction Technologies Assessment (CTA) database, also developed by ENSCO for DTRA, with signature data for specific construction equipment contained in the CTA database. The Signatures Database also integrates with the National Signatures Program (NSP) database, a joint, multi-community program to improve the organization, management, and dissemination of signature data.
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