LUKA
Lightweight GNSS RTK Receiver with Calibration-Free Tilt Compensation
LUKA is a compact, lightweight GNSS RTK receiver with 1,792-channel multi-constellation tracking, calibration-free tilt compensation, long battery life, and integrated UHF and 4G connectivity for efficient surveying in demanding field conditions.
- IMU-GNSS Fusion
- Calibration-free and is immune to magnetic interference.
- Centimeter Precision
- Tested accuracy of 2cm when tilted at 60° (2m or 1.8m pole).
- Vibration Resistance INS Performance
- Efficiency goes up by 30% when continuously surveying with Tersus Rod-Tip-Roller.
- Survey without Tilt Angle Limitation
- Tested RMS error of 3.7cm at a tilt angle of 110°.
Calibration-Free Tilt Compensation
Measure points quickly without leveling the pole. LUKA combines GNSS and IMU data to maintain centimetre-level accuracy while tilted and remains immune to magnetic interference. Tested accuracy reaches 2 cm at a 60° tilt, helping surveyors capture obstructed or difficult-to-reach points with greater speed and flexibility.
Fix in Seconds
Powered by a high-performance multi-constellation and multi-frequency GNSS engine, LUKA delivers centimetre-level positioning and rapid RTK initialization. Its high-performance antenna improves time to first fix and anti-jamming capability, supporting stable field work even where satellite visibility is limited.
Compact and exquisite design
The pocket-sized LUKA measures only 132 × 68 mm and weighs 827 g. Despite its compact size, it integrates the GNSS engine, internal battery, UHF radio and 4G modem in one field-ready receiver, reducing the equipment surveyors need to carry and making long days in the field more comfortable.
Powerful and smart battery
A built-in 7,000 mAh lithium battery supports up to 19 hours of operation in network and rover-radio modes. The smart battery indicator provides clear power status, while fast charging takes about three hours. LUKA can also be powered by a power bank during field work for added flexibility.
Engineered for field work
The industrial-grade IP68 enclosure protects LUKA against dust and water in harsh environments. Its rugged construction withstands a 2 m pole drop onto concrete, helping surveyors work confidently on construction sites, in poor weather and across challenging terrain.
Complete Field-to-Office Workflow
Pair LUKA with the rugged TC80 controller and the free NUWA field software for CAD and road stakeout, online and offline maps, AR-guided stakeout, graphical measurement and cloud project collaboration. Back in the office, Tersus Geo Office 2 supports GNSS post-processing, network adjustment, road workflows and RTK project processing.
Applications
CAD Stakeout
Supports direct import of various types of complex DWG and DXF files for staking of selected points and lines, as well as other more functions such as layer management, block operation, etc.
Road Stakeout
Supports importing, editing and previewing of roads in road management, as well as staking of road centerlines, cross sections and elevations in road stakeout.
Online and Offline Maps
Supports online maps like OSM and Google, as well as imported files like DXF, KML, KMZ and LandXML as base maps.
AR view in Stakeout
With the excellent tilt compensation of LUKA GNSS receivers, combined with the realistic view, the screen arrow will direct you to the point (without needing to orient to North first) to speed up the field work.
Graphic Measurement
Visualization of graphic measurements, Nuwa will automatically connects the measurement points into the selected graphic, also switch between point survey and line survey based on the type of code.
Cloud
Project data backup and rapid collaboration, supports one-click synchronization of cloud and local data, also supports to export data to cloud, download and open on the desktop.
Technical Specifications
Signal TrackingGPS L1C/A, L1C, L2C, L2P, L5C; GLONASS L1OF, L2OF, L3OC; BeiDou B1I, B2I, B3I, B1C, B2a, B2b; Galileo E1, E5a, E5b, E5AltBOC, E6; QZSS L1C/A, L1C, L2C, L5C; SBAS L1C/A, L5; IRNSS L5; L-Band
Channels1792
Single Point Positioning (H/V)1.5m / 2.5m RMS
DGPS Positioning (H/V)0.25m / 0.5m RMS
High Precision Static (H/V)2.5mm+0.1ppm / 3.5mm+0.4ppm RMS
Static & Fast Static (H/V)2.5mm+0.5ppm / 5mm+0.5ppm RMS
Post Processed Kinematic (H/V)2.5mm+1ppm / 5mm+1ppm RMS
RTK Accuracy (H/V)8mm+1ppm / 15mm+1ppm RMS
Network RTK Accuracy (H/V)8mm+0.5ppm / 15mm+0.5ppm RMS
TAP Positioning Accuracy (H/V)15mm / 30mm RMS
TAP Convergence Time3 minutes
TAP CoverageGlobal
TAP Signal Stability99.99%
Tilt Compensation Accuracy≤2 cm (within 60°)
Observation Accuracy — C/A Code10 cm
Observation Accuracy — P Code10 cm
Observation Accuracy — Carrier Phase1 mm
TTFF — Cold Start<30 s
TTFF — Warm Start<5 s
Reacquisition<1 s
Timing Accuracy20 ns RMS
Velocity Accuracy0.03 m/s RMS
Initialization4 s (typical)
Initialization Reliability>99.9%
Operating SystemLinux
StorageBuilt-in 8GB
Data FormatCMR, RTCM 2.3, RTCM 3.x
Data OutputRINEX, NMEA-0183, Tersus Binary
Data Output Rate20 Hz
Software SupportTersus Nuwa
Cellular4G LTE/WCDMA/GSM/EDGE
Cellular BandsLTE FDD B1,B3,B7,B8,B20,B28A; LTE TDD B38,B40,B41; WCDMA B1,B8; GSM/EDGE B3,B8
Network ProtocolsNtrip Client, Ntrip Server, TCP, Tersus Caster Service (TCS)
Wi-Fi802.11b/g/n
Bluetooth4.1
Internal Radio — RF Transmit Power0.5W/1.0W
Internal Radio — Frequency410–470 MHz
Internal Radio — Operating ModeHalf-duplex
Internal Radio — Channel Spacing12.5 / 25 kHz
Internal Radio — Modulation TypeGMSK, 4FSK
Internal Radio — Air Baud Rate4800/9600/19200 bps
Internal Radio — ProtocolsTrimTalk450, TrimMark 3, South, Transparent, Satel
USBType-C, OTG x1
ButtonPower Button
LED IndicatorsSatellite, Correction Data, Static, Solution, Bluetooth
VoiceSupport in Nuwa App
Power DisplaySupport
External Power SupplyUSB (5–20V)
Fast Charging15W max (5V 3A)
Lithium Battery7000mAh / 7.4V
Charging Time3 hours (20%–90%)
Battery Charging Temperature+10 to +45 °C
Battery Working TimeUp to 10 hours
Dimensionф132x68 mm
Weight≈827 g
GNSS AntennaIntegrated
Screw Hole for Assembly5/8''x11UNC-2B
VibrationMIL-STD-810G, FIG.514.6C-1
Operating Temperature-40 to +70 °C
Storage Temperature-55 to +85 °C
Relative Humidity100% not condensed
Water & Dust ProofIP68
Pole Drop onto Concrete2 m
Frequency Range410–470 MHz
Operating ModeSimplex
Channel Width25 / 12.5 kHz
Modulation TypeGMSK / 4FSK
Operating Voltage9–16 V DC
RF Output PowerHigh 28W / Medium 22W / Low 5W
Distance (Typical)14–16 km
Frequency Stability≤±1.0 ppm
Antenna Impedance50 Ohm
Antenna InterfaceTNC female
Air Baud Rate4800/9600/19200 bps
Serial Port Baud Rate9600/19200/38400/57600/115200 bps
ProtocolTRIMTALK, TRIMMK3, TRANSEOT, SOUTH, SATEL
Temperature — Operating-40 to +65 °C
Temperature — Storage-50 to +85 °C
Dustproof & WaterproofIP67
Dimension175 x 130 x 86.5 mm
Weight≈2.0 kg
Data & Power InterfaceLEMO 5pin
InstallationHook
Support
Frequently Asked Questions
Documents
Firmware, software installers and configuration tools for this product are in the MyTersus portal. Open product downloads
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Total Stations
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