Spherefix SP30 RTK GNSS Rover Base Set with Laser and AR

Complete Spherefix SP30 RTK Rover and Base System

The Spherefix SP30 Rover and Base Set provides two matching multifunctional GNSS receivers for professional base-and-rover surveying. One receiver is installed over a known or newly established reference point and operates as the base station. It calculates correction data and transmits it to the second SP30, which is carried through the project as the rover.

This configuration gives surveyors, construction companies and engineering teams greater control over their RTK workflow. It is particularly useful on sites without access to a suitable NTRIP network, in areas with unreliable mobile coverage or on projects where an independent local correction source is preferred.

Two Matching SP30 GNSS Receivers

Both the base and rover use the same 1,408-channel, multi-frequency GNSS platform. The receivers track signals from GPS, GLONASS, BeiDou, Galileo, QZSS, SBAS and NavIC, giving the system access to a broad range of available satellites.

Using identical receivers simplifies equipment management because either unit can be configured for the required role. Teams can set up one SP30 as the base and the other as the rover, then change the configuration when the project or equipment plan requires it.

Multi-constellation tracking is valuable when part of the sky is obstructed by trees, buildings or machinery. It cannot remove the effects of severe signal blockage or multipath, but it provides more observations for the positioning engine to use under changing field conditions.

Independent Local RTK Corrections

The integrated 410–470 MHz UHF radio supports direct correction transmission between the base and rover. Radio output can be adjusted up to 5 W to suit the working environment, local regulations and required communication range.

A local base-and-rover setup is useful for earthworks, road construction, land development, remote surveying and other projects where mobile data coverage is limited. It can also help organisations avoid relying on a third-party correction service for every job.

The practical radio range depends on antenna height, terrain, buildings, vegetation, interference and the radio settings used. Positioning the base with a clear view and selecting an appropriate radio channel can improve the stability of the correction link.

Centimetre-Level RTK Surveying

The stated RTK accuracy is ±(8 mm + 1 ppm) horizontally and ±(15 mm + 1 ppm) vertically. This makes the system suitable for construction layout, topographic surveys, engineering measurement, utility mapping, as-built recording and ground-control work when the base coordinates and survey configuration are correct.

A base station must be positioned over an accurate reference coordinate when measurements need to match an existing national, local or project coordinate system. Alternatively, it can be established on an arbitrary coordinate for projects where only accurate relative positions are required.

Actual field accuracy depends on satellite visibility, base-coordinate quality, radio or correction stability, baseline length, atmospheric conditions and surrounding reflective surfaces. Good setup procedures remain essential even when using advanced GNSS equipment.

60° IMU Tilt Compensation

The rover’s integrated IMU compensates for pole tilt over a range of up to 60°. The operator can place the pole tip on the required point without carefully levelling the pole before every observation.

This is useful when measuring beside walls, close to buildings, underneath vegetation, around parked machinery or near other physical obstructions. Tilt compensation also speeds up repetitive topographic and construction surveys because fewer movements are needed to centre and level the pole.

The manufacturer states positioning accuracy of less than 2 cm within the supported tilt range under suitable conditions. Correct pole height, calibration, a fixed RTK solution and appropriate field procedures are still required.

Camera-Assisted Laser Measurement

The SP30 includes an integrated laser and aiming camera for measuring locations that are difficult or unsafe to occupy with the pole tip. The operator can stand in a more convenient position, aim at the required feature and record it remotely.

Typical applications include building façades, corners behind barriers, trench edges, raised objects, points near traffic and features on the opposite side of a fence or obstruction. The manufacturer states a three-dimensional laser-measurement error of no more than 2.5 cm at distances within 5 metres under suitable conditions.

Laser measurement extends the range of points that can be collected efficiently, but the operator should choose the measurement method according to the required accuracy, target visibility, surface characteristics and site-safety requirements.

AR Real-Scene Stakeout

A built-in wide-angle camera supports augmented-reality stakeout. The field software can display guidance over the live camera view, helping the operator see the direction of the design point in the actual site environment.

This is easier to interpret than directional values alone, especially on open sites or construction projects containing many closely spaced points. Visual guidance can reduce unnecessary walking and help construction workers or occasional GNSS users follow the stakeout process more confidently.

Flexible 4G and Wireless Connectivity

In addition to the integrated UHF radio, each SP30 provides 4G, Wi-Fi and Bluetooth connectivity. The rover can therefore also receive NTRIP corrections through a mobile network when a compatible correction service is available.

This gives the system two practical operating methods. Teams can use their own SP30 base station for an independent local correction link or operate the rover through an RTK network when that is more convenient. Bluetooth and Wi-Fi support communication with compatible field controllers, software and other equipment.

Designed for Long Field Sessions

The SP30 receivers are designed for extended outdoor operation, allowing the base to remain active while the rover moves around the project. Their rugged construction is intended for everyday surveying environments where equipment may be exposed to dust, moisture and changing weather.

For long or remote projects, teams should still plan charging, backup power and base security carefully. The base receiver normally remains unattended during rover work and should therefore be installed in a stable, protected location where it will not be moved or disturbed.

Practical Applications

• Construction layout and site preparation
• Topographic and engineering surveys
• Road, rail and infrastructure projects
• Earthworks and volume measurement
• Utility and underground-asset mapping
• Land development and cadastral fieldwork
• As-built surveys and quality control
• Ground-control and checkpoints for drone mapping
• GIS data collection in areas without RTK network coverage

Who Uses the SP30 Rover and Base Set

Professional surveyors can use the set for independent field surveys and stakeout projects. Construction teams can establish a base on site and use the rover for foundations, utilities, kerbs, roads and earthworks. Engineers can verify positions and collect as-built data, while GIS teams can map assets in areas where correction-network coverage is unavailable.

Drone operators can use the system to establish accurate ground-control points and independent checkpoints. The two-receiver configuration is also suitable for organisations working across several regions where access to local NTRIP services varies from project to project.

Choosing and Configuring the Complete System

A professional base-and-rover setup requires more than two GNSS receivers. The field configuration may also require a suitable data controller, survey software, rover pole, base tripod or pole, tribrach or adapter, radio antennas and project-specific accessories. The required items depend on the intended workflow and the exact package configuration.

Global GPS Systems can help buyers configure the Spherefix SP30 Rover and Base Set for their coordinate system, field software, radio requirements and surveying application. This helps ensure that the base, rover, controller and accessories work together as a practical field solution.