Leica GS18T

The Leica GS18T is a high‑performance GNSS RTK rover designed for fast, reliable positioning on surveying, construction and engineering projects. With advanced tilt compensation and robust connectivity, it delivers accurate 3D positioning without the need to level the rover pole manually.

Calibration-Free Tilt Compensation allows you to measure and stake out points with an angled pole without any magnetic interference or setup delays.
IMU-Based Technology provides a maintenance-free solution that is significantly more reliable and faster than traditional compass-based tilt sensors.
Full Constellation Tracking ensures the unit connects to GPS, GLONASS, Galileo, and BeiDou for the best possible positioning in difficult environments.
Rugged IP68 Design guarantees the sensor is completely waterproof and dust-tight to withstand the harshest British site weather.

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Full Description

The Leica GS18T GNSS RTK Rover is a cutting‑edge surveying receiver built for professionals seeking greater productivity and flexibility in field measurement tasks. It combines precision GNSS tracking with an integrated inertial measurement unit (IMU) to automatically compensate for pole tilt, meaning you don’t need to level the pole to obtain accurate position data. This reduces setup time, cuts down on human error and speeds up point collection even in complex environments where traditional GNSS workflows struggle. Equipped with multi‑constellation GNSS tracking and a high update rate, the GS18T provides reliable RTK positioning whether you’re capturing topographic data, establishing control networks, or performing as‑built surveys. Built‑in connectivity such as UHF radio and optional cellular modem support flexible correction data sources, helping maintain continuous, high‑accuracy results on urban and rural sites alike. The receiver pairs seamlessly with Leica Captivate field software and compatible controllers like the CS20, enabling intuitive 3D visualisation, design export and workflow management directly in the field. With a rugged chassis, IP66/68 protection and long runtime from removable batteries, the GS18T is prepared for everyday site use and harsh conditions. Suited to surveyors, contractors and civil engineers, the GS18T excels in RTK network surveys, setting out, topographic mapping, utility surveys and other precision positioning applications where efficiency and accuracy are paramount. When used alongside robotic total stations like the TS16, the GS18T enhances hybrid positioning workflows by providing precise GNSS coordinates that complement robotic optical measurements. This allows teams to switch smoothly between satellite positioning and prism‑based tracking depending on site conditions, reducing total setup points and improving overall field productivity.

FAQs

What makes the “T” in GS18 T so significant?

The “T” stands for Tilt. Unlike older GNSS rovers that used magnetometers, the GS18 T uses a high-performance Inertial Measurement Unit (IMU). This makes it the first rover completely immune to magnetic disturbances and requires no on-site calibration, allowing you to forget the bubble and start measuring immediately.

How much time can I really save by not levelling the pole?

Field tests show an average productivity increase of 20%. Because you no longer need to centre a physical bubble for every point, you can simply “touch and go.” This speed is most noticeable during large topographic surveys and complex stakeouts where every second saved per point adds up.

Can I use the GS18 T near iron fences or reinforced concrete?

Yes. Since the GS18 T relies on an IMU rather than a compass-based magnetometer, it is not affected by metal. You can measure points directly against steel sheet piling, next to parked vehicles, or on reinforced concrete slabs without loss of accuracy or the need for recalibration.

What is the maximum tilt angle allowed?

Accuracy is highest when the pole is relatively vertical, but the GS18 T can accurately compensate for tilt angles of 30° and beyond. While there is no “hard limit” as long as satellites are tracked, most professionals find 30-45° the practical limit for maintaining millimetre precision.

How does the GS18 T work as a “Hybrid” package?

The GS18 T is the perfect partner for a Leica robotic total station in a SmartPole setup. By mounting it on top of a 360° prism, the Leica Captivate software combines optical and GPS data. If you lose line-of-sight to the total station, the system automatically switches to the GS18 T.

What is the difference between the GS18 T and the GS18 I?

The “T” model focuses on Tilt compensation, while the GS18 I adds a high-resolution camera for Visual Positioning. This allows you to capture site images and measure points from them later in the office, which is ideal for physically inaccessible or dangerous locations.

How rugged is the GS18 T for a typical UK construction site?

Built to IP66 and IP68 standards, the GS18 T is completely dust-tight and can withstand temporary immersion. It is also designed to survive a 2-metre topple-over onto hard surfaces, making it one of the most resilient pieces of equipment in a surveyor’s arsenal.

How many satellite signals can the GS18 T track?

It features 555 channels and RTKplus technology to track and select the best signals from all available constellations, including GPS, GLONASS, Galileo, and BeiDou. This self-learning engine ensures a “Fixed” position even in challenging environments like urban canyons or light tree canopy.