For precise tree marking, operational monitoring or plot boundary recognition, positioning accuracy of the order of a few centimeters is required. Unfortunately, vegetation cover, or even worse, wet vegetation cover, prevents GNSS signals from penetrating it. As a result, survey accuracy is often severely degraded by more than a meter.
To overcome this problem, Geobsys offers two solutions:
- As the receiver is sufficiently small, light and communicative, it can be fixed to the top of a 15-20 m telescopic mast, allowing it to reach beyond the vegetation cover. So, for a boundary marker survey, the operator deploys his mast on which the GEOSTIX is screwed, placing the base of the mast at the center of the bollard. Using the bubble to verticalize the unit as best as possible, the GEOSTIX in RTK mode sends the bollard's centimetric position via Bluetooth to the smartphone attached to the mast at the operator's level.
Use of telescopic mast
By using a telescopic mast that is tall enough to reach beyond the canopy, the lightweight GEOSTIX enables precise surveying even under plant cover.
- A new layer is currently under development, which will enable the operator to aim at a distant point and obtain its position. The GEOSTIX equipped with this layer could be positioned in a clearing or on the edge of a forest, and measure the position of a point less suitable for precise GNSS geolocation (too much vegetation cover, for example).