Can Precis-BX316 work well for aerial photogrammetry with UAV without the need for ground control points(GCPs)?

Can Precis-BX306 work well for aerial photogrammetry with UAV without the need for ground control points(GCPs)?

Yes, the following solution can be used to replace the GCPs:

You can setup a base with our Precis-BX306, and then transmit RTK corrections from the base. After the corrections are received, it will output accurate (cm-level) positioning and heading info. In the application of aerial photogrammetry with UAV, after the camera take a picture, it will send a pulse from the PC (Prontor-Compur connection) port to the receiver, the accurate position (cm-level) will be saved.

The photos and their positions will be input to the mapping software (eg, PIX4D or Agsoft) to get an accurate map.

Do I need a specific camera to work or any camera?

No specific camera is needed; you can use any camera which has a PC (Prontor-Compur connection) port. And the synchronization between the shutters to the flash must be enabled. When the camera is taking a photo, a pulse is sent to the receiver through the PC port. The exact time when the photo is taken will be saved for post-processing.

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Tersus Geomatics Office - Static Surveying - Data Processing

Tersus Geomatics Office is integrated office software to manage and process data for NeoRTK, the RTK survey receiver. It is laid out with visualized toolbars and logical icons to easily handle GNSS data processing, baseline processing and network adjustment, etc. It is the software set to import, update and analyze data effectively. Watch the video to know how to do data processing after static surveying data collection with NeoRTK. Learn more, click here . Inquiry, click here .

What is CORS network? How to connect to CORS network with external Bluetooth module and mobile phone?

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Integration with Autopilots

Precis-BX305 board can be integrated with autopilots. In this article, the connecting to Pixhawk flight control is used as an example. A cable is used to connect the COM1 port of Precis-BX305 board and the GPS port of the Pixhawk. 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 as the default baud rate of Precis-BX305 board is 115200. The Pixhawk can only recognize the NMEA sentence with GP NMEA talker. Incorrect NMEA talker configuration may cause connection failure. 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 posi

Tersus RTK Engineer

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