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SparkFun GPS-RTK Dead Reckoning pHAT for Raspberry Pi offers a variety of configuration options and utilizes u-blox’s Automotive Dead Reckoning (ADR) technology. The GPS-RTK provides a highly accurate and continuous position by implementing a 3D IMU sensor, wheel ticks, a vehicle dynamics model, correction data, and GNSS measurements.
The SparkFun GPS-RTK Dead Reckoning pHAT is a 184-channel u-blox F9 engine GNSS receiver, receiving signals from the GPS, GLONASS, Galileo, and BeiDou constellations with ~0.2-meter accuracy. The accuracy can be achieved with an RTK navigation solution when used with a correction source. The GPS-RTK supports the simultaneous reception of four GNSS systems. The combination of GNSS and integrated 3D sensor measurements on the device provides accurate, real-time positioning rates of up to 30Hz.
The GPS-RTK Dead Reckoning pHAT is also equipped with an on-board rechargeable battery that provides power to the RTC. This reduces the time-to-first fix from a cold start (~24s) to a hot start (~2s). The battery will maintain RTC and GNSS orbit data without being connected to power for a length of time. Please note the GPS-RTK Dead Reckoning pHAT requires an antenna for operation.
