Optimal Ranging Inc. Spar

August 2011, Vol. 66 No. 8

The Spar is a handheld, one-pass, remote sensor capable of locating and GIS mapping in 3-D subsurface cable, conduit and pipe with up to centimeter-level accuracy to depths of one meter (11 feet), decimeter-level accuracy to depths of three meters and sub-meter accuracy to depths of 15 meters (50 feet).

Optimal Ranging’s proprietary FieldSens remote sensing technology integrates with GNSS-derived geographic positions. The Spar determines the offset and depth of the pipe or cable and automatically merges it with the GNSS geographic position to produce a survey-grade subsurface 3-D map, with estimates of both horizontal and vertical RMS error, in GIS or CAD formats for export. With Spar in close proximity to the utility line, it automatically displays the location of the utility on the GIS map interface and guides the operator along the lay line of the utility. The Spar identifies the position of the utility regardless of its orientation to the radiated field, which allows the operator to follow the track even when the utility is behind a fence or covered by impassable vegetation. Handheld, pole or cart-mounted, the Spar is designed to meet a broad range of applications. 408.715.1222, www.optimalranging.com