Setting new standards for high-precision GPS is the GPS-RTK. With the most recent ZED-F9P module from u-Blox, the RTK can achieve a 10mm precision in three dimensions. These boards can produce your X, Y, and Z position that is around the width of your fingernail. You read that right. The finest feature of this module is its ability to output latitude, longitude, and altitude with centimeter-grade precision. We'll cover this more in a later section.
A few of the features it offers include: multi-band RTK with quick convergence times, a high update rate, support for moving base RTK mode, simultaneous reception of four GNSS systems, support for augment positioning systems, accurate & quick positioning with little drifting, and exceptional anti-spoofing & anti-jamming abilities.
By simply attaching it to the Pi, you may give your Raspberry Pi GNSS capabilities.
The GPS-RTK HAT for Raspberry Pi is a high accuracy, sensor fusion GPS board that uses u-Automotive Ublox's Dead Reckoning (ADR) technology. It has really exceptional customising options. The ZED-F9R module provides a very accurate and continuous position by utilising a 3D IMU sensor, wheel ticks, a vehicle dynamics model, corrective data, and GNSS measurements.
The ZED-F9R module is a GNSS receiver that can precisely measure signals from the GPS, GLONASS, Galileo, and BeiDou constellations to within 0.2 metres with to its 184 channels and UBlox F9 engine! Yes, such accuracy is possible with an RTK navigation system when used in conjunction with a correction source. You need to connect to a base station since the F9R's capability is restricted by ZED. Four GNSS systems may be simultaneously received by the module. Thanks to the combination of a 3D sensor and GNSS measurements, the ZED-F9R provides accurate, real-time positioning rates of up to 30Hz.
When compared to other GPS modules, this GPS-RTK HAT improves position accuracy in congested cities or covered regions. Even with a poor signal in cities, continuous location is still possible, as is continuous positioning with no signal at all (e.g. short tunnels and parking garages). The ZED-F9R is the finest option for autonomous robotic applications that need accurate positioning under challenging conditions.
This u-blox receiver is capable of supporting a number of serial protocols. We choose to use the Raspberry Pi's serial UART as the default method of connection to the module. Without the need for soldering, the GPS-RTK HAT may be placed on top of a Raspberry Pi, NVIDIA Jetson Nano, Google Coral, or any other single-board computer with pre-soldered headers.
On known fixed coordinates on the ground, the ZED-F9P module may be used to build up continuous running reference stations. When ZED-F9P terminals upload rough positioning data, paid RTK base station upgraded services may additionally broadcast GNSS observed value, enabling the terminals to calculate observed value in real time for centimeter-level positioning in a matter of seconds even with defects such multipath refraction.
With the help of two or three ZED-F9P modules working in tandem, the moving base RTK (MB RTK) function may produce exact deflection angle, altitude, centimetre level positional coordinate, or attitude angle readings. Applications like vessel heading determination, "follow me" movement and shooting with unmanned aerial vehicles (UAVs), heavy machinery moving control, agricultural vehicle heading control, and others are appropriate for it.
By receiving satellite signals transmitted from many navigation satellite systems, the UBlox Multi-GNSS (Global Navigation Satellite System) receiver is a system that can determine location, velocity, and time.
Global Navigation Satellite System (GNSS) augmentation is a technique for raising the performance of the navigation system, such as integrity, continuity, accuracy, or availability, by integrating outside data into the user position solution.
By using the GNSS network, geo-fencing may be used to enclose an area virtually. The device will automatically get notifications and cautions when it enters or exits that area.
Currently GPS RTK HAT is available on Kickstarter.
