Using the Trimble SPS986 GNSS Smart Antenna and Trimble Siteworks Positioning Software, capture accurate points while standing, walking or driving the site in a vehicle, while the receiver is not level. From inside the vehicle, contractors can set the height of the antenna and quickly interrogate surface models using the real-time 3D surface display. Tilt compensation allows for faster data collection—create larger digital terrain models faster and with improved accuracy.