Get the centimeter-accurate multi-GNSS L1/L2 GNSS kit for your drone DIY projects. Standard 433/915 MHz and high-end radio versions are available.

Standard radio versions are 915 MHz (US) and 433 MHz (Europe). The two radio transmitters in an RTK system need to be able to pass RTCM data from the base station to the rover receiver. The bundle includes a basic low-power radio link that runs quickly and is good for short baseline applications.

High-end radio version is with Tersus radio station RS05R, which is a rover radio solution for wireless application. It provides reliable data communication for mission-critical applications where a combination of stability, supreme performance and long range are required. The RS05R is designed for digital radio communication between 410 and 470 MHz in either 12.5 or 25 KHz channels, which can be widely used in GNSS RTK surveying and precise positioning system.

Get more details, click here.

We are glad to release the latest firmware update to Precis OEM boards, the 1.15 version. Firmware V1.15 provides users with more robust RTK fix solution and accuracy. It provides other improved performance such as RTK solution of long baseline. Some known issues have been fixed as well. All update improves RTK positioning performance and high-precision navigation in more challenging environments.

Useful links

Firmware download

www.tersus-gnss.com/pages/software

User guide

www.tersus-gnss.com/pages/documents

The INS-T-306 is the advanced module that combines GPS L1/L2, GLONASS, BDS navigation and a high-performance strap-down system. It is capable of determining position, velocity and absolute orientation (heading, pitch and roll) for any device on which it is mounted. It aims at facilitating motionless and dynamic applications that need high accuracy, such as vessels, ships, helicopters, unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs).

The INS-T-306 utilizes an advanced GNSS receiver, barometer, magnetometers, MEMS accelerometers and gyroscopes to provide accurate position, velocity, heading, pitch and roll of the device under measure. Besides GPS L1/L2, GLONASS and BDS, the unit supports differential GPS and real-time kinematic (RTK). It is able to integrate into LiDAR (Velodyne, RIEGL and Faro brands). The on-board sensor fusion filter, navigation and guidance algorithms, and calibration software inside all make INS-T-306 a commercially exportable GNSS-aided inertial navigation system.

Pricing and more details: www.tersus-gnss.com/products/inertial-navigation-system

Precis-BX306 is a GNSS RTK board (GPS L1L2/GLONASS G1G2/BDS B1B2) for accurate position. This board offers real-time & cm-level positioning capability and uses standard serial port module for communication. A special connector makes it easy to integrate to its host devices or autopilots.

Take a look at its performance on the city streets with tree cover & tall buildings. 

We launched the brand new GNSS RTK Board, the Precis-BX306 to market in April. A series of other new products and accessories were also showcased. Click here.

The launch of Precis-BX306 aims at facilitating the applications which need centimeter positioning accuracy and dynamic operation mode, enforcing effective observation data logging and management, and popularizing the adoption of high precision in aerial mapping and drone-related integration.

Compared with previous Precis GNSS RTK boards, Precis-BX306 further improves the reliability and continuity of positioning performance in challenging environments as it supports GPS L1/L2, GLONASS G1/G2, Beidou B1/B2 with 192 tracking channels. It can easily integrate into Pixhawk and other autopilots. The event mark and PPS features provide more possibilities for shutter synchronization.

Product address:

https://www.tersus-gnss.com/products/precis-bx306

More details:

https://www.tersus-gnss.com/

Precis RTK system is being used for some pretty cool stuff. Mr. Stephen Noble, owner of Drone Surveying, used Precis RTK boards to provide land survey and aerial photography service in Australia. By leveraging L1/L2 GPS frequencies for accuracy and reliability, when fixed in RTK or PPK mode, their equipment provides centimeter absolute accuracy. Check it out.

Contact Us, click here. 

A zero-baseline test of 4 GNSS receivers (Precis-BX305 incl.) was conducted by Daniel Tampubolon from Institute Teknologi Bandung in Indonesia. He used zero-baseline test in order to obtain noise of receiver by single-differencing the raw. Then he found out the characteristic of noise for each receiver by analyzing its spectrum.

Test/Experiment Setup: He connected 4 GNSS receivers, including two Precis-BX305 boards (indicating as TerA & TerB in all charts) to one antenna with a one-to-four RF splitter. Then he formed four double different zero baselines between every two receivers and analyzed the quality of the double different observations. Part of the results shown in following figure and details could be found in PDF file, click here.

Precis-BX316 GNSS RTK Board (GPS L1L2/GLONASS G1G2/BEIDOU B1B2 with Heading) supports PPS output, which is useful in shutter synchronization. More details, click here. 

With event mark, Precis-BX316 can support camera shutter synchronization, which is useful for aerial mapping and drone-related applications. More details, click here. 

The chart below compares the key specs of the Precis RTK Systems.

Further questions, please drop us a line to info@tersus-gnss.com

Precis-TX204 is a multi-GNSS receiver with built-in centimeter accuracy RTK, onboard storage and versatile connectivity. The built-in battery can support up to 10 hour continuous field work and up to 16GB SD card provides more convenience and makes your field work easy. The receiver is ideal for:

• Providing differential data or logging observation.
• Providing centimeter level position and velocity information.
• Providing precise navigation information for UAVs and robotics, etc.

More information on Precis-TX204, download the datasheet.

Key specification comparison of Precis RTK systems (Precis-BX305, Precis-BX316, and Precis-TX204), click here.

Hi there,

Two sample datasets (in Tersus binary format) for static and kinematic scenarios are logged with Precis-BX305 GNSS RTK Board (GPS L1L2/GLONASS G1/Beidou B1B3) for post-processing software compatibility test. You can download them to do the testing in terms of observation quality analysis and PPK purpose.

Download: http://www.tersus-gnss.com/pages/document-software

Any questions, drop us a line to info@tersus-gnss.com. 

Precis-BX316, the Multi-GNSS, Dual Frequency RTK Board with Dual Antenna for Heading released. Pre-order Now. Check with our sales representatives for details. Key features:

• Multi-GNSS Signal Tracking
  • GPS L1L2/GLONASS G1G2/BeiDou B1B2
• Reliable Centimeter-level Positioning
  • Up to 20Hz RTK solution output
• Dual-Antenna GNSS Heading
  • Accurate yaw & pitch angle of moving platform
• Accurate Shutter Synchronization
  • Ideal for aerial mapping and drone
• Raw Observation Data Logging
  • Onboard SD Card for data logging & storage
• Smaller, Lighter 
  • Compact and lightweight design

A quick start video provides basic instruction for setting up and using Precis-BX305 RTK solution. For details, please refer to Precis-BX305 user guide. 

Watch how Tersus GPS RTK works on Arducopter in Loiter Mode.

Great work from Michael Oborne and his Ardupilot Dev Team and thanks for the sharing.

The CORS is an appealing way to do RTK due to its convenience and large coverage area. While Precis-BX305 currently does not support build-in NTRIP client feature, there is an alternative way to connect CORS network by employing external Bluetooth module and a cellphone. Check it out.

Watch this video that shows how to log data with external data logger. The logged binary observation data can be converted in to RINEX format with Tersus GNSS Center.

Test Environment: City Streets with Tree Cover & Tall Buildings

Welcome to the Precis-BX305 Quick Start Guide. Here you will find instructions for how to use the Precis-BX305 RTK board in some simple steps with illustration. Of course, more details of its application could be found in Precis-BX305 User Guide.

We are also glad to share with you that Tersus GNSS Center V1.0, which is the official configuration software for all Precis RTK boards is available now. It is a PC tool to help users configure the RTK board and visualize running status. The Quick Start Guide of this software is on the way. Stay tuned.

To download the Precis-BX305 Quick Start Guide and Tersus GNSS Center, please visit www.tersus-gnss.com/pages/document-software or contact us at info@tersus-gnss.com.

Tersus Rinex Converter V1.0 is now ready for release. RINEX is short for Receiver Independent Exchange Format, which is well used for post data process. This tool can help users convert their binary observation data into RINEX 3.2 format.

All Precis RTK boards (Precis-BX303, Precis-BX305 and Precis-BX316) support raw observation data logging. Precis-BX303 has an onboard SD card slot and the Precis-BX305 and Precis-BX316 support external data logger. The logged binary observation data can be converted into Rinex 3.2 with Tersus Rinex Converter.

You can download Tersus Rinex Converter through our technical support site www.tersus-gnss.com/pages/technical-support

If you have any technical inquires, drop us a line to sales@tersus-gnss.com