Differential Correction Sources: SBAS, RTK Base Stations, and Real-time GNSS Networks

We get a lot of questions about how to improve in-the-field accuracy with GNSS equipment.  Many new or less-experienced users suspect that when a device is marketed to provide 10 cm or 1 cm level accuracy, that it provides that right out of the box.  When you pay a pretty penny for a high-end machine […]

Elevation Matters: High-accuracy GNSS for Dam Inspections

When an application for GNSS requires highly accurate relative elevation readings for a set of features, we often think of fairly traditional surveying techniques and equipment like survey-grade GNSS systems, total stations, or even the old hand level with a stadia rod.  But when that structure is way out in the boondocks far from any […]

A Few, Simple Best Practices for Collecting GNSS Data Using Trimble Handhelds

  Collecting high quality GNSS data in the field is simple.  Well…..maybe that is understating things considering you can attend a prestigious university and receive a graduate degree on the subject.  Certainly there is a lot to consider when working with GNSS technology as a whole.  The best approach is to narrow down the subject […]

GPS Survey of Energia Costa Azul

Earlier this month Jon Gipson of ASC Scientific and myself, Cliff Askew of Electronic Data Solutions, embarked on a quick trip to Ensenada, Mexico to survey the breakwater at Energia Costa Azul. The goal is to verify that the breakwater is not being moved  by the force of the ocean wave’s constant pounding. This Liquefied Natural Gas plant provides […]