If you have any problem about this figure, please make your comment or drop us a line to sales@tersus-gnss.com

If you would like to get technical specification and user guides of our RTK boards, click here.

Hi all,

Following the video “RTK centimeter accuracy road test with IMU”, below you can find a static RTK positioning result figure to demonstrate the Precis-BX305 product performance. The figure shows the real-time positioning results with radio data link and here is short description.

Receiver: a pair of Precis-X305 boards
Location: Roof of building
Time span: 1 hour
Baseline length: about 5m
Solution type: real-time solution

The latest pilot version of Precis-BX316 RTK board was showed during 7th China Satellite Navigation Conference in May. This version supports GPS L1L2/BDS B1B2/GLONASS G1G2 and with GPS L1L2 heading mode. In addition, it supports up to 20Hz RTK solution output and onboard SD card for raw data logging, which is key for post process and data analysis. Camera shuttle synchronization feature for aerial mapping applications is added as well. They are ideal for UAVs. The official launch of Precis-BX316 will be in Q4 and datasheet is ready now. If you are interested and want to get details of technical specifications, drop us a line to sales@tersus-gnss.com or click Datasheet for Precis-BX316. Stay tuned. 

The 7th China Satellite Navigation Conference will be held in Changsha Hunan Province from May 18 to 20, 2016. Tersus GNSS will bring the latest product release named Precis-BX316, a dual antenna and frequency RTK board to participate. As the annual event of satellite navigation, the theme of this conference is “Smart Sensing, Smart Perception” and a series of discussions will be organized. In the BeiDou/GNSS Navigation Application session, our engineering expert will give a keynote speech in terms of Application of Low Cost GPS/BDS Receiver in UAV Precise Navigation and Positioning.

The latest Precis-BX316 RTK board is a solution for precise position and heading, delivering multi-constellation RTK baselines between the two connected antennas and to a remote base station. It supports multi-GNSS RTK positioning and enables real-time, centimeter level positioning accuracy.

We will keep you posted for the news related to UAVs shared during the conference. Stay tuned. 

The upcoming Saturday is the World Book Day, and here share one of my favorite books to all UAV geeks. Out of Control: The New Biology of Machines, Social Systems, & the Economic World Co-Evolution of Man and Machine by Kevin Kelly. The concept the author brought out, the “hive mind” addresses how biological system handle complexity, moves over into industrial ecology and reflects the convergence of biological and technical systems. Through a vast communication network, everything seems to be closely linked.

You may already observer that more and more SOC sensor systems with compact and low-power design have been integrated into objects. They have the ability to communicate the object’s position, temperature, humidity, motion, light intensity, sound and so forth and interact with the object or even adjust the behavior of objects. This scenario is exactly how Kevin Kelly depicts. It is the dawn of a new era in which the machines and systems that drive the economy and society are so complex and autonomous to be indistinguishable from all living things. 2 billion people have access to Internet. Looking forward, 5 to 10 billion objects are going to be entered into another huge network which will tremendously change the life of human. For example, refrigerators go shopping or cars do fueling automatically, etc.Tersus GNSS was established by this inspiration.

Do you find this book and metaphors thought-provoking and entertaining? Take some time to digest if you are interested.

(Figure 1 Demonstration of Integration with Pixhawk autopilot)

Precis RTK board can be integrated with autopilots. We use the connection to Pixhawk flight control as an example. A cable is used to connect the COM1 port of Precis RTK board and the GPS port of the Pixhawk (see Figure 1). It is noticed that the GPS port need a 6pin PicoBlade connector while the COM1 port is a 5pin PicoBlade connector. The pin definition of the Pixhawk GPS port is listed in Table 1. With regarding to the power consumption, we recommend using external power sources. Please also pay attention to the baud rate setting of Pixhawk. Then you need to mount the GNSS antenna and tether the board on your vehicle. 

Please beware of following instructions when you mount the GNSS antenna to your drone.

■ Place the module on the outside of your vehicle (in an elevated position if appropriate) with a clear view of the sky

■ Distance the module from DC power wiring and the batteries by at least 10cm

Next step is setting up the Pixhawk with mission planner. Open Mission planner software and choose the right COM port on the top right corner. Choose 115200 as baud rate (default baud rate of Precis RTK board COM1 port). Then click ‘connect button’ on the right. Then it is recognized by mission planner if the GPS status becomes ‘3D Fix’ (see Figure 2).

(Table 1 Pin definition of Pixhawk GPS port, from left to right)

(Figure 2 Precis RTK board is recognized by Pixhawk and Mission Planner)

To get more info on the functions and get support for trouble shooting, drop us a mail sales@tersus-gnss.com or visit our official website www.tersus-gnss.com for the User Guide. 

Generally speaking, a GNSS RTK board will provide various electronic interfaces for communication as below.

- COM1/COM2, employ 5pin PicoBlade receptacle connector with TTL voltage level (1.25mm inter-pin distance)

- LED Indicator, shows the operational status (LED1 is data link indicator, LED2 is RTK status, LED3 is positioning status, LED4 is power indicator).

- Host USB port, receptacle USB 2.0 port for external USB Flash disk

- Micro USB, 5V DC power supply

- SD card slot, for plug in SD card

- SMA1, for GNSS antenna

- SMA2, for PPS output

As Tersus understands how important the interfaces for connection and communication, all Precis® series of GNSS RTK boards perform self-check and initialization procedure before they start to work. To get more info on the functions and get support for trouble shooting, drop us a mail sales@tersus-gnss.com or visit our official website www.tersus-gnss.com for the User Guide.

Hey there,

Since we launched the Precis-BX305, the L1L2 board for RTK, we have received quite a lot of customer enquiries and questions. To meet or excel your requirement, we now officially launch the L1 RTK board (Precis-BX303) to fit your DIY testing needs and UAV applications at a very affordable price.

Precis-BX303 can be integrated to other host devices or served as an independent GNSS receiver. It dedicates to deliver high precision, reliable positions between rover and the reference antennas, which integrated versatile communication modules, including UHF module WI-FI module, Bluetooth module and USB2.0 port. It supports multi-GNSS RTK positioning, which improves the continuity and reliability of RTK positioning.

Want to know more about its key features and how it works? Take a look at www.tersus-gnss.com or drop us an email by sales@tersus-gnss.com