GNSS white paper
Enabling cm-accurate and robust positioning for mass-market IoT devices
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How the limitations of traditional GNSS can be addressed
GNSS has been widely used for decades, but limitations in its accuracy and reliability have created implementation challenges for newer, mass-market IoT devices such as e-scooters, robotic lawnmowers, and autonomous robotic devices.
While GNSS has proven to be a valuable positioning technology, it has inherent weaknesses that hinder its effectiveness in certain scenarios. Fundamentally, GNSS needs to be able to ‘see’ the sky, so it can receive the direct signal from the satellites. In a real-world environment, accessing a direct signal is not always possible, and it cannot be relied upon as the only solution to provide a device with accurate location at all times.
By combining RTK and dead reckoning with GNSS, accurate and robust positioning can be achieved at a cost level and with power consumption that mainstream intelligent devices can sustain.
In this white paper, we explore the how the limitations of traditional GNSS technology are being addressed, and show how enhancements such as multi-band, RTK and dead reckoning can allow positioning solutions to achieve high precision and consistent accessibility – so GNSS modules can reliably support a wide range of mass-market IoT applications once thought beyond their reach.
Multi-band, RTK and DR technologies have long been available only to the automotive and higher value industrial sectors. For mass-market applications, the hurdles are not only the technology itself but the size, power consumption and most importantly, the cost. Quectel offers one-stop solutions for mass-market precise positioning using these technologies, and well-calibrated high-precision antennas to suit all market needs – read our white paper to learn which solution is right for your precise needs.