Spherefix SP30 Pro Rover and Base Set with AR Stakeout

A complete RTK GNSS base and rover system

The Spherefix SP30 Pro Rover and Base Set gives surveying and construction teams a complete local RTK positioning system. One SP30 Pro receiver is installed over a known or established point as the base station, while the second receiver is used as the mobile rover. The base calculates GNSS correction data and transmits it to the rover, allowing the operator to work with centimetre-level positioning across the project site.

This setup is useful for contractors, land surveyors, civil engineers, utility crews and GIS professionals working in areas where an NTRIP service is unavailable, unreliable or unsuitable for the project. It also gives organisations more control over their correction source and allows the same equipment to be moved between construction sites, survey areas and infrastructure projects.

Work independently of a permanent RTK network

A rover-only system normally requires corrections from a public or private RTK network. With a separate SP30 Pro base receiver, crews can establish their own correction source on site. This is particularly valuable in rural areas, remote locations and projects with inconsistent mobile coverage.

The base and rover communicate through the receivers’ integrated data radios. Transmission range depends on the selected radio power, antenna position, terrain, local interference and whether there is a clear line of sight between the base and rover. Placing the base in a stable, elevated position generally supports a stronger correction link across the working area.

Multi-constellation tracking for reliable positioning

Each SP30 Pro receiver uses 1408 channels to track GPS, GLONASS, BeiDou, Galileo, QZSS, SBAS and NavIC signals. Multi-frequency and multi-constellation support gives the system access to a broad range of satellites and helps it maintain useful positioning availability in real field conditions.

This is important when working near buildings, trees, machinery or other objects that partly obstruct the sky. GNSS performance will always depend on the site environment, but tracking more satellite systems gives the receiver more observations to use when calculating its position and resolving an RTK-fixed solution.

AR stakeout with live camera guidance

The SP30 Pro includes a forward-facing camera for AR real-scene stakeout. Instead of relying only on directional arrows and numerical offsets, the operator can view stakeout guidance over a live image of the actual site. This provides a clearer visual route towards the selected design point.

AR guidance is practical when setting out foundations, building corners, road features, utility locations, piles, grid points and landscape designs. It can reduce confusion about the direction of travel and make GNSS stakeout easier to understand for construction workers who do not use surveying equipment every day.

Photogrammetric measurement for inaccessible points

The receiver’s imaging system can also be used for photogrammetric point measurement with compatible field software. This allows the operator to determine certain points from captured images without placing the pole tip directly on every feature.

Image-based measurement is useful for building corners, façades, trench details, road edges, stockpiles and objects behind fences or other obstacles. It can reduce the need to enter unsafe areas and helps crews collect additional site detail while remaining in an accessible position. Results depend on image quality, working distance, camera geometry, calibration and the surrounding field conditions.

Measure with the pole tilted up to 60°

The integrated IMU compensates for a pole tilt of up to 60°. Spherefix states positioning accuracy below 2 cm within the supported tilt range. This lets operators record a point without carefully centring the pole bubble for every measurement.

Tilt compensation is especially useful beside walls, underneath vegetation, around parked equipment and along trenches or embankments. It also makes routine topographic collection and construction checks more efficient by reducing the time required to level the pole.

Flexible radio and internet communication

The SP30 Pro includes a 410–470 MHz data radio with selectable transmission power, as well as 4G, Wi-Fi and Bluetooth. For a local base-and-rover workflow, the radio carries correction data directly from the stationary base to the moving rover. Where a suitable mobile network is available, either receiver can also support internet-based correction workflows.

These communication options allow the same set to be adapted to different projects. A crew can use its own radio base on one site and connect the rover to an NTRIP service on another. Permitted frequencies and transmission power vary between countries, so the radio configuration must comply with local regulations.

C100T controller for surveying and stakeout

The Spherefix C100T is a rugged Android field controller used to configure the receivers, create survey jobs, record points and guide stakeout work. Its physical keypad and outdoor display make it suitable for use on construction sites and during longer surveying sessions.

The controller provides the interface between the operator and the GNSS system. Depending on the supplied field software, users can manage coordinate systems, import CAD or point data, enter feature codes, stake out lines and points, and export completed measurements for further processing.

Suitable for demanding outdoor projects

The SP30 Pro uses a magnesium-alloy receiver body with IP68 environmental protection. This helps protect the equipment against dust, rain and the normal knocks associated with daily construction and surveying work. The receiver is also specified to withstand a 1.5 metre pole drop under stated test conditions.

In rover mode, the internal battery provides more than 24 hours of operation under the manufacturer’s stated conditions. Long receiver endurance is valuable on large sites and remote projects where access to charging facilities may be limited.

Practical applications

The Spherefix SP30 Pro Rover and Base Set is suitable for organisations that need repeatable RTK positioning across changing or remote project locations. Its combination of a dedicated local base, visual stakeout, photogrammetry and IMU tilt compensation supports both experienced surveyors and construction personnel carrying out everyday layout and measurement tasks.

• Construction layout and machine-control reference work
• Topographic and cadastral surveying
• Road, railway and infrastructure projects
• Earthworks, volume surveys and as-built checks
• Utility location and pipeline surveying
• GIS asset collection and site mapping

Choosing a base and rover set from Global GPS Systems

Global GPS Systems can help configure the Spherefix SP30 Pro Rover and Base Set for the intended country, radio frequency, coordinate system and field-software workflow. Correct configuration is particularly important for base-and-rover equipment because the two receivers must use compatible correction protocols and locally permitted radio settings.

The exact package contents, controller software, accessories and licences can vary by selected configuration. Confirming the required tripod, tribrach, survey pole, controller holder, transport cases and charging equipment before ordering helps ensure that the system arrives ready for the intended fieldwork.