Dual-output automotive navigation unit has sensor-based spoofing detection

The NEO-M9L navigation modules and M9140-KA-DR chip have been introduced by u-blox. They are built on the company’s M9 GNSS platform and use dead reckoning techniques to provide accurate position data when satellite signals are compromised or unavailable, says u-blox.

The NEO-M9L-20A and NEO-M9L-01A modules, and the M9140-KA-DR chip are specially designed for first-mount automotive designs. The modules and the chip are all automotive grade, with the NEO-M9L-01A offering an extended operational temperature range up to 105 degrees C, making it suitable for integration on the roof, behind the windscreen, or the hot conditions inside electronics control units (ECUs). Applications include integrated navigation systems, for example in-vehicle infotainment (IVI) and head units, integrated telematics control units (TCU), and vehicle to everything (V2X).

The modules include six-axis inertial measurement units (IMUs) which deliver low-latency 100Hz raw data output. The modules offer a low-latency 50Hz position update rate, for use in real-time applications. The automotive dead reckoning (ADR) output  combines the GNSS fix with IMU data for accurate positioning output. Additional GNSS-only output enables seamless integration into third-party applications. The receiver also supports wake-on-motion, which enables smart features such as theft protection and power-efficient designs, explains u-blox.

The modules offer sensor-based spoofing detection for advanced security and robustness. The chip offers protection against possible GNSS signal spoofing, which can cause navigation systems to report faulty position data or time.

“Availability and trustworthiness of position output are increased by using concurrent reception of four GNSS constellations,” says Aravinthan Athmanathan, product manager, product centre positioning at u-blox.

All the module variants comply with AEC-Q104, the latest standard for ensuring the reliability of modules used in automotive applications. Engineering samples and the evaluation kits will be available by the end of September 2021.

u‑blox specialises in positioning and wireless communication in automotive, industrial, and consumer markets. The company has a broad portfolio of chips, modules, and secure data services and connectivity. It has headquarters in Thalwil, Switzerland.


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