Positioning platform uses four GNSS systems for higher reliability

October 19, 2019 //By Christoph Hammerschmidt
Positioning platform provides highly reliable data for UAVs and cars
Today’s cars and trucks, but even more so agricultural machines and drones depend on reliable and exact position data. However, unfavorable conditions such as those in tunnels, urban canyons and adverse geographical conditions, most GNSS-based positioning systems render unreliable, because they lose the lose the connection to the position satellites. Swiss company u-blox has developed a technology platform that promises to be much more reliable.

Thanks to its GNSS chip, u-blox’ M9 technology platform and the NEO-M9N, the first module based on this platform, can receive signals from up to four GNSS constellations (GPS, Glonass, Beidou, and Galileo) concurrently. Thus, it can achieve high positional accuracy even in difficult conditions such as deep urban canyons. The u-blox M9 offers a position update rate of up to 25 Hz, enabling dynamic applications like UAVs to receive position information with low latency.

The M9 also features a special filtering against RF interference and jamming, spoofing detection, and advanced detection algorithms that enable it to report fraudulent attacks quickly so that users’ systems can react to them in a timely fashion. A SAW (surface acoustic wave) filter combined with an LNA (low noise amplifier) in the RF path is integrated in the NEO-M9N module. This setup guarantees normal operations even under strong RF interferences, for example when a cellular modem is co-located with the NEO-M9N.

u-blox has developed the M9 as a follow-on from the company’s successful u-blox M8 GNSS platform, offering more robust meter-level positioning technology and security features to protect the integrity of applications in the automotive, telematics, and UAV markets.


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