Gavin Schrock

Gavin Schrock is a practicing surveyor, technology writer and operator of a cooperative GNSS network.

on a pole or mounted on a chest harness (shown). Some users have mounted them on vehicles or inverted rods for maintenance holes, etc. (Photo: Scott Walls, Walls Land+Water)

June 2, 2025

Stacked rovers: Surveying and mapping benefits from multi-sensor stacks

For tough shots in complex construction sites, Lee Landman says that tilt make impossible shots possible. (Image: Lee Landman)

June 13, 2023

Tilt without guilt: No-calibration tilt compensation is now standard

NASA-JPL prototype of POINTER base units on a first responder vehicle. The magneto-quasistatic fields they generate can be detected through walls, where legacy indoor positioning technologies fail. (Image: Jet Propulsion Laboratory)

March 28, 2023

Positioning through walls: DHS and NASA partner on indoor positioning and location solution

March 14, 2023

Why GNSS is the glue for construction

Image: CHC Navigation

March 14, 2023

Guide, Assist, Automate: Why GNSS remains a key element for most construction automation applications

A unique workflow enabled by scanning robotic total stations is the simultaneous operation, with the same data controller and software, of a GNSS rover while scanning and imaging are being performed. Pictured: a Trimble SX12 and R12i GNSS. (Image: Gavin Schrock)

February 22, 2023

Robotic total stations add scanning capabilities

Douglas County Public Works needed a GNSS rover to support its UAS operations. The pay-as-you-go option was appealing as they only needed high-precision a few times per month. (Image: Jason Schilling)

February 22, 2023

Review benefits of GNSS rover accuracy

(Photo: CHC Navigation)

January 25, 2023

Precision Agriculture: GNSS Is Now Standard on Most Tractors

Correction services enable farmers to pinpoint where to apply fertilizers so as not to waste any. (Photo: artiemedvedev/iStock/Getty Images Plus/Getty Images)

January 25, 2023

Tiered Precision Pinpoints Customer Needs

January 25, 2023

Corrections Services Abound