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Product description: GPS-RTK Dead Reckoning pHAT module - ZED-F9R - Raspberry Pi overlay - SparkFun GPS-21305
GPS module from SparkFun with u-blox ZED-F9R chip using Automotive Dead Reckoning (ADR) technology. GPS-RTK Dead Reckoning pHAT is a Raspberry Pi overlay that combines a 3D IMU sensor , vehicle dynamics model, correction data and GNSS measurements, thanks to which it provides highly accurate and continuous position. ZED-F9R is a 184-channel u-blox F9 GNSS receiver, thanks to which it can receive signals from the GPS, GLONASS, Galileo and BeiDou constellations, with an accuracy of about 0.01 m (with simultaneous reception of all four GNSS systems). The actual positioning frequency is up to 30 Hz. The module allows precise positioning even in unfavorable conditions - it also works well in cities with dense buildings and in covered areas. Continuous positioning is ensured even in the event of a complete loss of signal (e.g. short tunnels and underground garages).
The manufacturer has prepared a detailed user guide that will help you get started with the module. Check it out!
GPS-RTK Dead Reckoning pHAT module - ZED-F9R - Raspberry Pi overlay - SparkFun GPS-21305.
Allows you to continue tracking your position even in weak GPS signal conditions.
Special features of the module
- Precise RTK positioning : The ZED-F9R module provides centimeter-level positioning accuracy, essential for applications requiring high precision.
- Dead Reckoning Technology : allows the device to continue tracking even in weak GPS signal conditions, ideal for urban and indoor environments.
- Ease of integration : Thanks to the Qwiic connector, the module can be easily connected to other peripherals and sensors, simplifying prototyping and testing projects.
- Raspberry Pi Compatibility : The pHAT shield's design allows for seamless integration with the Raspberry Pi. The module also features a 40-pin GPIO connector compatible with Raspberry Pi, NVIDIA Jetson Nano, and Google Coral.
- Support for multiple navigation systems : supports GPS, GLONASS, Galileo, and BeiDou for increased tracking accuracy.
Attention!
For proper operation, the module requires the use of an antenna with a U.FL connector, which must be purchased separately.
Briefly about GNSS
GNSS, or Global Navigation Satellite Systems, includes networks of satellites that allow for positioning over the entire surface of the Earth. This family includes systems such as GPS (Global Positioning System) and GLONASS, which provide extensive location functions for many users. How does satellite navigation work? It is all based on the principle of radio navigation and the use of radio signals, which are sent by satellites. Thanks to GNSS you can determine your location or plot a route to any place on Earth.
The board's design and built-in connectors allow for quick connection to the Raspberry Pi.
The module is also equipped with IMU sensors.
Technical specification of the module
- Module type: GNSS receiver. 184-channel
- Received bands: L1C/A and L2C
- Satellites: Simultaneous reception of GPS, GLONASS, Galileo and BeiDou
- Horizontal position accuracy:
- 0.01m from RTK
- Maximum navigation frequency: up to 30 Hz
- Operational limits
- Maximum G: ≤ 4 G
- Maximum altitude: 80 km
- Maximum speed: 500 m/s (1118 mph)
- Speed Accuracy: 0.5 m/s
- Course Accuracy: 0.2 degrees
- Built-in additional sensors: accelerometer and gyroscope
- Time Pulse Accuracy: 30 ns
- Supported protocols: NMEA, UBX and RTCM over UART
- Supply voltage: 3.3V/5V (3.3V logic)
- Current consumption: 85 mA to 130 mA (depending on constellation and tracking status)
- Pins: solder pads, Qwiic connector, USB Type-C
- U.FL connector: built-in, for use with your choice of antenna (sold separately)
- Board dimensions: 65 x 56.5 mm
- Weight: 20.70 g
