PozStar P5 RTK GNSS Rover Base Set with 60 Degree IMU

PozStar P5 RTK GNSS Rover Base Set

The PozStar P5 Rover Base Set is a complete high-accuracy positioning system for land surveyors, construction crews, engineers, GIS professionals and drone operators. It combines two PozStar P5 GNSS receivers so that one unit can be installed over a known or temporary reference point while the second receiver is used as the mobile rover.

This arrangement allows teams to generate and receive their own RTK corrections over UHF radio. It is particularly useful on sites where mobile internet coverage is unreliable, an NTRIP subscription is unavailable or a project requires an independent local base station.

Independent Rover and Base Operation

During a radio RTK survey, the base receiver remains stationary and calculates correction data from its known position. It then transmits those corrections to the rover, which applies them to its live GNSS observations. When the system reaches a fixed RTK solution, the rover can be used for centimetre-level point collection and stakeout.

The internal radio settings of the two receivers must use matching frequencies, protocols, channels and transmission speeds. Saved working modes make it easier to reuse a proven configuration on recurring projects without rebuilding every setting at the start of the day.

The receivers can also work with an external radio through the five-pin serial connection. This gives survey teams another option when a project requires a different transmission setup or greater radio flexibility.

Multi-Constellation GNSS Tracking

Each PozStar P5 contains a 1,408-channel GNSS board that tracks signals from GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS and NavIC. Using several constellations and frequencies gives the system more satellite observations to calculate from than a GPS-only receiver.

In practical fieldwork, this can improve satellite availability around buildings, machinery, tree cover and other objects that partially obstruct the sky. Actual performance still depends on the site, satellite geometry, multipath, radio link and correct base setup.

Centimetre-Level RTK Surveying

The published RTK accuracy is 8 mm + 1 ppm horizontally and 15 mm + 1 ppm vertically RMS under suitable operating conditions. This level of positioning supports topographic surveys, construction layout, utility mapping, site control, as-built measurement and other work where conventional handheld GPS is not accurate enough.

The distance-dependent ppm component means that expected error gradually increases as the rover moves farther from the base. For the best results, the base should be positioned securely with a clear view of the sky and the radio link should remain stable throughout the survey.

60 Degree IMU Tilt Compensation

The integrated IMU calculates the position of the pole tip even when the pole is moving or tilted. Once initialized, the rover can measure with an inclination of up to 60 degrees instead of requiring the operator to centre the bubble for every point.

This is useful beside walls, under overhangs, near parked equipment and on uneven ground. Surveyors can place the pole tip directly on the required feature while holding the receiver away from an obstruction, making many routine measurements faster and more comfortable.

PozPad Field Surveying Software

The supplied Geoelectron P9IV Android data collector communicates with the rover through Bluetooth and runs PozPad field software. Operators can create projects, select coordinate systems, apply geoid models, monitor solution quality and store surveyed points from one field interface.

PozPad includes point surveying, point stakeout, CAD stakeout, line stakeout, offsets, distance divisions and site calibration tools. These functions allow construction teams to load design information, navigate to required positions and place foundations, utilities, roads or other site features from project coordinates.

Site calibration can align GNSS coordinates with an existing local construction grid. This is important on projects where drawing coordinates do not directly match the active GNSS coordinate system.

CAD Based Setting Out

CAD functions allow users to select points and linework from a drawing rather than manually entering every coordinate. Lines can be divided into equal sections or marked at specified intervals, which is useful for placing columns, kerbs, piles, inspection points and repeating construction features.

The software is designed to handle large CAD files, giving crews access to detailed site drawings while working in the field. File performance can still depend on drawing complexity, controller storage and the way the CAD data has been prepared.

Flexible Survey Modes

Although supplied as a rover and base system, the two P5 receivers are not restricted to radio RTK. A receiver can also operate as a network RTK rover using VRS, FKP or another compatible NTRIP correction service when the connected Android controller has internet access.

Static observations can be recorded in internal memory for later processing. Stored files are accessible through the receiver’s Wi-Fi web interface and can be converted to RINEX before downloading. This adds flexibility for control work, longer occupations and projects that require post-processed observations.

Built for Everyday Field Use

Each receiver measures approximately 135 × 135 × 88.2 mm and weighs around 825 grams. The compact housing keeps the rover manageable on a survey pole while allowing the second unit to be installed securely on the supplied tripod and tribrach.

The IP67 enclosure protects the receiver against dust, rain and temporary immersion in water. A die-cast internal structure, protective shielding and elastomer construction help protect the electronics during ordinary surveying and construction use.

Each P5 contains a rechargeable 6,700 mAh lithium-ion battery. Published operating time is up to 12 hours in RTK rover mode and up to 18 hours in static mode, depending on settings, radio use, temperature and battery condition.

Connectivity and Equipment Integration

Bluetooth provides the connection between the rover and Android controller, while Wi-Fi gives access to the receiver’s browser-based status and file-management interface. USB Type-C is used for charging, firmware updates and data transfer.

A five-pin serial port supports NMEA output and external radio equipment. This makes it possible to pass position information to compatible third-party systems or adapt the setup to specialised field workflows.

Applications

Land surveyors can use the system for topographic surveys, site control, boundary-related measurements and setting out. Construction teams can position foundations, services, road elements, structural points and other design features without relying on tape measurements alone.

Engineers can collect accurate as-built coordinates and compare completed work against design information. GIS teams can map utilities and assets, while drone operators can establish ground-control points and independent checkpoints for photogrammetry projects.

Set Contents

The configured set includes two PozStar P5 GNSS receivers, a Geoelectron P9IV Android data collector, PozPad surveying software, a survey pole, controller bracket, tripod, tribrach and adapter. Charging and receiver accessories are supplied for normal operation.

Exact package contents can be adjusted to suit the intended workflow. Controller, software, radio and mounting requirements should therefore be confirmed before ordering, particularly when the system must integrate with existing equipment.

Buying and Support from Global GPS Systems

Global GPS Systems can help configure the PozStar P5 Rover Base Set for the permitted UHF frequencies and correction format used in the destination country. Support is also available for selecting coordinate systems, field controllers, poles and alternative radio equipment.

Radio frequencies between 410 and 470 MHz are subject to national regulations, and operating a transmitting base station may require an appropriate licence. The permitted frequency and power settings should always be checked before field use.