Trimble - SPS651 Modular Precise Vertical GPS Receiver
The Trimble® SPS651 Modular Precise Vertical GPS Receiver is the receiver of choice for dredging operations -- where cost-effective real-time positioning with precise vertical measurement is required. With 10cm (location) horizontal accuracy and 2cm (precise) vertical accuracy, contractors can be confident knowing they are getting the right positioning tool at the right price.
The SPS651 receiver can operate in all GPS modes, including Satellite Based Augmentation Systems (SBAS), DGPS, OmniSTAR (VBS, XP, and HP services), and RTK mode.
It can also be upgraded to track the GLONASS satellite constellation signals - allowing it to operate in areas with obstructed sky visibility or during times of limited GPS availability.
Modularity allows the flexibility to mount the receiver and GPS antenna in a variety of ways, example on a pole, backpack, site vehicle, light machinery or marine vessel. The receiver can be mounted in an accessible location where it is easy to configure and is secure from theft and weather, while the antenna can be mounted in a location that provides clear line of sight to sky and that reduces the potential for multipath.