Gnss Kolida K3 IMU

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Extra small size, 1598 channels, support all constellations, BEIDOU signal receiving capability enhanced


K3 IMUModels:K3 IMU An Ultra Light and Powerful GNSS ROVER that Covers Your Current and Future Needs.



2cm/ 60° Tilt Survey Technology…

1598 Channels

All Constellation Signal Tracking…

0.69 kg

Ultra Light and Small

SOC: New System Structure


Kolida Gnss K3 IMU


The Best-in-Class GNSS Engine

The integrated advanced 965-channel GNSS technology helps K3IMU to collect signal from GPS, Glonass, Beidou, Galileo, QZSS, in particular the latest BeiDou III. It greatly improved the data quality and satellite signal capturing speed of GNSS surveying.


Kolida Gnss K3 IMU

"SOC" , New System Structure

"SOC" means“System-on-Chip”, this new design integrates several individual hardware modules into one microchip. The receiver can be much lighter and smaller, system runs more stable and faster, bluetooth connection speed is faster. The“High-Low Frequency Integration”antenna can effectively restrain the interruptive signal. 

Kolida Gnss K3 IMU


Constantly Ungraded Inertial Measurement

KOLIDA’s 3rd generation inertial sensor and algorithm are onboard now. The working speed and stability have been improved for 30% from the last version. When the GNSS fixed solution is lost and recovered again, Inertial sensor can remain the working status in a few seconds, no need to spend time to reactivate it... Tilt angle is up to 60 degrees, accuracy is down to 2cm. 


Kolida Gnss K3 IMU

0.69 kg, Comfort Experience

K3 IMU is ultra light, the total weight is only 0.69 kg including battery, 40% even 50% lighter than a traditional GNSS receiver. The light-weight design reduces surveyor’s fatigue, increase their mobility, is especially helpful to work in challenging environment.

Kolida Gnss K3 IMU

A Huge Leap In Working Hours 

Thanks to the high-capacity battery and the intelligent power management plan,  K3 IMU can work up to 12 hours in RTK radio rover mode, up to 15 hours in static mode. The charging port is Type-C USB, users can choose KOLIDA quick charger or their own smartphone charger or power bank to recharge. 


Kolida Gnss K3 IMU


Easy Operation

K3 IMU can seamlessly connect to RTK GNSS networks via Android controller or smartphone with KOLIDA field data collection software, to work as a network rover, also can be worked as UHF radio rover by using its internal radio modem.. 

Kolida Gnss K3 IMU


New Radio,Farlink Tech.

Farlink technology is developed to send large number of data and avoid data loss.

This new protocol improves the signal-catching sensitivity from -110db to -117db, so K3IMU can catch the very weak signal from a base station far way.

Kolida Gnss K3 IMU


Practical Functions

K3 IMU employs Linux system, it helps surveyors to accomplish their missions easier, faster and more accurate by delivering exceptional quality and innovative features.


Kolida Gnss K3 IMU

New app.   New Productivity

Windows CE data controller is too old technology? 

No problem. Simply use Ksurvey, Field Genius Android, SurvX App on your smart phone or tablet.

Enjoy the smooth operation of Android platform !

Kolida Gnss K3 IMU

Post-processing Sw.   Free of Charge

KOLIDA GEO Office integrates static data processing & Kinematic data adjustment




■ 1568 GNSS channels

-GPS L1C/A, L1C, L2C, L2E, L5

-GLONASS L1C/A, L2C/A, L2P, L3-BeiDou B1, B2, B3

-Galileo GIOVE-A, GIOVE-B, E1, E5A, E5B-SBAS L1C/A, L5 |

Initialization: time <2-8 s, reliability >99.99%

Supported data formats:

CMR+, CMRx, RTCM 2.1, RTCM 2.3, RTCM 3.0, RTCM 3.1, RTCM 3.2

Output data formats:

NMEA 0183, PJK plane coordinates, Binary code, Trimble GSOF

Positioning Accuracy

Code differential GNSS positioning

Horizontal: ±0.25m+1ppm

Vertical: ±0.50m+1ppm SBAS positioning accuracy: typically<5m 3DRMS


Horizontal: ±2.5mm+0.5ppm Vertical: ±5mm+0.5ppm

Real-time kinematic (RTK)

Horizontal: ±8mm+1ppm Vertical: ±15mm+1ppm

Network RTK

Horizontal: ±8mm+0.5ppm Vertical: ±15mm+0.5ppm

RTK initialization time 2~8s

Physical characteristics

Size 17.5 x 17.5 x 8.3 cm Weight 1.33 kg (2 batteries included)

User interface

Five Indicator lights

Two buttons

Linux System

I/O interface

5PIN LEMO external power port+RS232

7PIN external USB(OTG)+Ethernet

Bluetooth 2.1+EDR standard

Bluetooth 4.0 standard, support android, ios connection


8GB SSD internal storage

Support external USB storage (up to 32 GB)

Automatic cycle storage

Changeable record interval

Up to 20Hz raw data collection


RTK rover RTK network rover: VRS, FKP, MAC NTRIP, Direct IP


Environmental characteristics

Operating temperature: -45°to +60°C

Storage temperature: -55°to +85°C

Humidity: 100% condensing

IP67 waterproof, sealed against sand and dust

Drop: 2m pole drop on concrete

Power characteristics

Built-in battery, 7.4 V, 10.000 mAh

Battery life:>14h (static mode)>10h (internal UHF base mode)>12h (rover mode)

External DC power: 9-25 V

UHF Radio characteristics

Built-in radio (only Receiving) Frequency Range 410-470MHz

Protocol:TrimTalk450s, TrimMark3, SOUTH (KOLIDA)

“Barrier-Free” Measurement Technology: Repeater/ Router/ CSD mode

Cellular module characteristics


Compatible with 4G GPRS/EDGE


Configure and monitor receiver by web server via Wi-Fi or USB cable


Close range (shorter than 10cm) automatic pair between receiver and controller (need NFC chip in controller)


802.11 b/g standard Hotspot: allow device to access in data link: broadcast differential data

Voice Guide

intelligent voice technology provides status indication and operation guide

Chinese, English, Korean, Russian, Portuguese, Spanish, Turkish and user define

Standard system components

K3 IMU Receiver Li-Ion battery Charger and adapter All-direction antenna

Tape measure 7-pin to OTG cable 1 year warranty

Data collectors

-T17 (Windows) -H6 - H5 (Android) -s50 (Android)

Field software

-Field Genius (Windows)-SurvX(Android)

1-2 year warranty extension