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Engaging software
The Leica GS18 T is accompanied with the revolutionary Captivate software, turning complex data into the most realistic and workable 3D models. With easy-to-use apps and familiar touch technology, all forms of measured and design data can be viewed in all dimensions. Leica Captivate spans industries and applications with little more than a simple swipe, regardless of whether you work with GNSS, total stations or both.

Seamlessly share data among all your instruments

Leica Infinity imports and combines data from your GNSS RTK rover, total station and level instruments for one final and accurate result. Processing has never been made easier when all your
instruments work in tandem to produce precise and actionable information.


Category: RTK GPS, Leica RTK GPS

Product Details

Self-learning GNSS
Leica RTKplus, SmartLink (worldwide correction service), SmartLink fill (worldwide correction service)
Adaptive on-the-fly satellite selection, Remote precise point positioning (3 cm 2D), Initial convergence to full accuracy typically 18 min, Re-convergence < 1 min Bridging of RTK outages up to 10 min (3 cm 2D)
Leica SmartCheck
Continuous check of RTK solution
Reliability 99.99%
Signal tracking

GPS (L1, L2, L2C, L5), Glonass (L1, L2, L2C, L3), BeiDou (B1, B2, B3), Galileo (E1, E5a, E5b, Alt-BOC, E6), QZSS (L1, L2C, L5, L6), NavIC L5, SBAS (WAAS, EGNOS, MSAS, GAGAN), L-band
Number of channels

555 (more signals, fast acquisition, high sensitivity)

Time for initialisation

Typically 4 s
Real-time kinematic (Compliant to ISO17123-8 standard)
Single baseline Network RTK
Hz 8 mm + 1 ppm / V 15 mm + 1 ppm, Hz 8 mm + 0.5 ppm / V 15 mm + 0.5 ppm
Post processing
Static (phase) with long observations, Static and rapid static (phase)
Hz 3 mm + 0.1 ppm / V 3.5 mm + 0.4 ppm, Hz 3 mm + 0.5 ppm / V 5 mm + 0.5 ppm
Code differential
Typically 25 cm

Communication ports
Lemo, Bluetooth
USB and RS232 serial, Bluetooth® v2.1 + EDR, class 1.5
Communication protocols
RTK data protocols, NMEA output, Network RTK
Leica, Leica 4G, CMR, CMR+, RTCM 2.2, 2.3, 3.0, 3.1, 3.2 MSM & NMEA 0183 V 4.00 and Leica proprietary & VRS, FKP, iMAX, MAC (RTCM SC 104)
Built-in data links
GSM / UMTS / LTE phone modem, Radio modem
Fully integrated, external antenna, Fully integrated, receive and transmit, external antenna 403 - 473 MHz, 1 W output power, up to 28800 bps over air
External data links

GSM / GPRS / UMTS / LTE and UHF / VHF modem

Field controller and software
Leica Captivate software
Leica CS20 field controller, Leica CS35 tablet
User interface
Buttons and LEDs, Web server
On / Off and Function button, 8 status LEDs, Full status information and configuration options
Data recording
Storage, Data type and recording rate
Removable microSD card, 8 GB, Leica GNSS raw data and RINEX data at up to 20 Hz
Power management
Internal power supply, External power supply, Operation time
Exchangeable Li-Ion battery (2.8 Ah / 11.1 V), Nominal 12 V DC, range 10.5 - 26.4 V DC, Typical operating time up to 8 h. Operating time depends on use of wireless communication devices.
Weight and dimensions



1.20 kg / 3.50 kg standard RTK rover setup on pole

173 mm x 173 mm x 109 mm


Temperature, Drop, Proof against water, sand and dust, Vibration, Humidity, Functional shock

-40 to 65°C operating, -40 to 80°C storage, Withstands topple over from a 2 m survey pole onto hard surfaces, IP68 (IEC60529 / MIL STD 810G 506.5 I / MIL STD 810G 510.5 I / MIL STD 810G 512.5 I), Withstands strong vibration (ISO9022-36-08 / MIL STD 810G 514.6 Cat.24), 100% (ISO9022-13-06 / ISO9022-12-04 / MIL STD 810G 507.5 I), 40 g / 15 to 23 msec (MIL STD 810G 516.6 I)
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