Shallow-earth Geophysical Research
Tunnel Detection Methods
Using various geophysical methods ENSCO has developed proficiency in tunnel detection. Our value-added methods include custom sensor tools, techniques, and ENSCO-developed software for multi-sensor data display. We have developed technical approaches and detailed test plans to detect both shallow and deeply buried tunnels. In addition to collecting data ourselves we have often acted as consultants to address specific needs by applying the appropriate geophysical methods.
Utility Mapping
By combining our sensor and geopositioning information with our customized algorithms, ENSCO identifies and locates underground utilities (phone, electric, water/sewer, etc.) in complex urban environments to provide a permanent map of underground environment.
ENSCO received a U.S. Patent (6,999,021) entitled “Method and Apparatus for Detecting, Locating and Mapping Underground Utilities.” This patent describes a method for locating underground utilities (gas, electric, water, etc.) by collecting data with multiple sensors across an area of interest and using the spatial variation of the sensor data to interpret the location of the underground utility. Using this method, a trained operator is not required to precisely locate and follow along a specific single underground utility. Instead, an operator merely traverses back and forth across the area of interest to collect sensor data from underground utilities while at the same time recording the sensor location data. After data acquisition, the data is automatically processed to determine the location of linear features that are indicative of underground utilities. Both sensor data and interpreted utility locations are presented on a map. This invention improves the reliability and saves considerable time by performing noninvasive underground utility mapping.
Land Mine Detection
ENSCO has established sophisticated technology to both detect and characterize land mines. For detection we have developed the small area inertial tracking system, which characterizes detected magnetic anomalies found when performing mine remediation activities. This system effectively operates over a small (~2m x 2m) area using a commercial magnetometer sensor coupled with very precise three-dimensional position data. This unique system collects magnetic and position data with enough precision to generate an image of an underground metallic object. This allows the technician to distinguish metallic scrap from dangerous high metal-content mines.
Growing out of our precision location, ground penetrating radar (GPR), and ultra-wideband radar experience, we have developed RTOP-3D for land mine characterization. It provides in-ground mine detection and imaging ensuring users see exactly what is concealed as our visualization software provides easy high-resolution three-dimensional imaging of the subsurface.
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