Tech Chat | How to Obtain GNSS Static Data With Sfaira ONE Series?
In surveying, GNSS raw data, or static data, is essential for achieving high-precision results. Typically, surveyors use GNSS receivers with built-in storage to record this static data, which they then export to a PC for post-processing. Recently, Sfaira ONE Series users have also expressed interest in obtaining static data, although this model lacks internal storage. In this blog, we'll walk you through how to obtain static data from the Sfaira ONE Series via a Type-C USB cable for easy transfer.
Preparation
Before starting, gather the following:
- Sfaira ONE Series GNSS receiver
- Any serial port tool (e.g., SuperCom)
- Type-C to USB cable
Step 1: Connect the Device to Your PC
1. Use a Type-C to USB cable to connect the Sfaira ONE receiver to your PC, then power on the device.
2. Open Device Manager to check which COM port the device is connected to, and set the correct baud rate in your serial port tool.
3. Once connected, you should see message data in the window, including GPGGA, GPZDA, GPGSA, GPRMC, GPGST, GPNTR, GPGSV, and battery information.
Note: Ensure the device is powered on for a successful connection and data transmission.
Step 2: Enter Configuration Mode
Once connected, follow these steps to set up the GNSS board for data logging:
1. In the serial port tool, send the <enter gnss config mode> command.
2. The device should respond with a message indicating that it's in configuration mode (e.g., <Enter TYPEC<=>GNSS , BT<=>IMU mode>).
3. You can also use the <unlog> command to temporarily stop the device from outputting messages, allowing you to review detailed information, such as satellite data.
Step 3: Enable Static Logging and Save Data
1. Select the Save option in your serial tool and choose a destination path on your PC to save the log file.
2. Send the following commands in sequence to enable static data logging:
OBSVMB 1
GPSEPHB ONCHANGED
BDSEPHB ONCHANGED
GLOEPHB ONCHANGED
GALEPHB ONCHANGED
The device should respond with "Ok" and begin sending static data.
3. After the required duration, a log file will be generated in your selected path. Copy this file and change its extension to *.xyz.
Step 4: Convert Binary to Standard RINEX Format
Use the SingularConverter software to convert the *.xyz file into a RINEX Observation File. Once converted, the RINEX file will be ready for further analysis or post-processing.
Read previous blog about how to use SingularConverter:
Tech Chat | Introducing SingularConverter: Easier RINEX Data Conversion
By following these steps, you can effectively configure your Sfaira ONE Series receiver to store static GNSS data and convert it to RINEX format for high-accuracy applications. This process is ideal for surveyors and GIS professionals seeking precise, post-processed positioning data. For additional help, feel free to reach out to our support team.
Learn more about Sfaira ONE Series,
