Gnss Kolida K20s IMU

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Gnss Kolida K20s IMU "smallest", compact body, integrating advanced technology, superior measurement performance in one, saving time and effort and leading the trend.

Start now, start your RTK "small" revolution and experience the hardcore, compact, powerful and flexible ultimate experience. New Gnss Kolida K20s IMU Equipped with K803 board, 965 Channels. Upgrade to more fast and compatible 4G module Battery pole supports to work for a whole day. Super Linux platform, to achieve a breakthrough in functionality: built-in radio transceiver integration, breaking distance restrictions; dual battery power supply, extended battery life; smart storage, 4G Netcom, intelligent voice, network management and a series of functions, let the intelligence penetrate into the mapping Every detail.

VIDEO Check System Info


VIDEO Inertial measurement system


VIDEO English voice-over


VIDEO Language Setting




VIDEO Restore Factory Defaults


VIDEO Self Check


VIDEO Setting work mode


VIDEO Set PPK Recording Status


VIDEO Voice guide setting

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Models: K20s IMU

2cm/ 60° Tilt Survey Technology

965 Channels

All Constellation Signal Tracking

8 km Built-in UHF Radio Working Range

Innovations 10 New Programs

965 channels GNSS Mainboard, All Constellations supported. Inertial measurement technology, OLED screen display

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Kolida Gnss K1, K1Pro, K20, K20s, IMU



More Advanced GNSS Engine


Featuring a powerful 965 channels GNSS mainboard inside, K20s can track and process all the existed satellite constellations. With the utility of BEIDOU (COMPASS) signal, the data acquisition speed and GNSS signal stability are greatly improved from old generation technology. (For advanced users who need to maximize the working speed and satellite signal tracking ability, a 965 channels GNSS mainboard is optional.) 



         Kolida Gnss K1, K1Pro, K20, K20s, IMU


10 Innovations to Increase Efficiency


More than 10 programs or functions were re-designed to make your work flow simpler and smoother, let you to work easier and comfortable, help you to get more reliable working result. 



Kolida Gnss K1, K1Pro, K20, K20s, IMU


More Durable and Rugged 


Kolida K20s is fully sealed, has a IP 68 level proof. 

The built-in battery has 10,000 mAh capacity and can work 8 to 14 hours as RTK rover, with only one recharge.


Kolida Gnss K1, K1Pro, K20, K20s, IMU



Work Safer and Easier


Thanks to the inertial measurement technology, K20s IMU allows user to do a tilt survey with a maximum tilt angle of 60 °. Centering is not a must, so surveyors can stay in safe position when they measure on motorway, and don't need to step into water.



Kolida Gnss K1, K1Pro, K20, K20s, IMU



Fast and accurate 


Not like tilt sensor, Inertial Measurement Unit is no more affected by the earth's magnetic field and requires no correction. It can be activated and start working within only few seconds, this fast positioning will increase measurement speed by over 30%. 


The combination algorithm of IMU + GNSS can get fixed solution faster and keep measurement results more stable, accuracy is down to 2cm.



Kolida Gnss K1, K1Pro, K20, K20s, IMU



Measure where others can't


Corner of wall? Points underneath pipe? Points occupied by car? These targets are no more accessible..



Kolida Gnss K1, K1Pro, K20, K20s, IMU



Long Range Radio Link


SDL400 built-in radio can send signal as far as 7 km in urban area, 8 km in suburban. The maximum coverage is up to 200, suitable to have multiple rovers work simultaneously.



Kolida Gnss K1, K1Pro, K20, K20s, IMU



Barrier Free Measurement


In difficult environment you may lost connection with base station or VRS network. Don't be disappointed, you can choose from 3 creative work modes to continue surveying without interruption. (Repeater/ Router/ Mobile Refenrence Station)


Kolida Gnss K1, K1Pro, K20, K20s, IMU




SDL400 built-in radio features anti-interference capability, so K20 can work close to power plant, transformer substation, mobile signal tower and other interference source.


Kolida Gnss K1, K1Pro, K20, K20s, IMU


Practical Functions


Kolida K20s and K20s 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 K1, K1Pro, K20, K20s, IMU


  New App


Windows CE data controller is too oldtechnology?

No problem. Simply download SurvXApp onyour smart phone or tablet.Enjoy the smooth operation of Androidplatform 


Kolida Gnss K1, K1Pro, K20, K20s, IMU


GNSS K20s IMU characteristics

■ 965 GNSS channels

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


-BeiDou B1, B2, B3

-Galileo GIOVE-A, GIOVE-B, E1, E5A, E5B


Initialization: time <10s, 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


Physical characteristics


17.5 x 17.5 x 8.3 cm


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 50Hz raw data collection


RTK rover & base

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

Buit-in Li-Ion battery, 7.4 V, 10000 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 120 Channels

Frequency Range 410-470MHz

Protocol:TrimTalk450s, TrimMark3, SOUTH (KOLIDA)

1W/2W/3W switchable

typically working range 7-8km

“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

K20s IMU Receiver

Li-Ion battery

Charger and adapter

All-direction antenna

Tape measure

30 cm pole extension

7-pin to OTG cable

Engineering Star (Windows)

Engineering Star (Android)

1 year warranty

Optional system components

External Radio (410-470 MHz, 5-35W)

Battery Case SA-6003

Data collectors

-T17 (Windows)

-H6  (Android)

-s50 (Android)

Field software

-Field Genius (Windows) - SurvX(Android)

1-2 year warranty extension