Friday, April 12, 2024

Accurate Navigation With Sensor-Based Spoofing Detection

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These automotive-grade positioning modules provide accurate position data when satellite signals are compromised or unavailable

Using dead reckoning techniques to provide accurate position data when satellite signals are compromised or unavailable, here’s presenting the NEO-M9L modules and the M9140-KA-DR chip by u-blox that are built on the robust M9 GNSS platform. These automotive-grade positioning modules are operational up to 105 °C. The NEO-M9L-20A and NEO-M9L-01A modules, as well as, the M9140-KA-DR chip are specially designed for first-mount automotive solutions.

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The NEO-M9L-01A’s high operational temperature range makes it suitable for integration on the roof, behind the windscreen or inside hot electronics control units (ECUs). Applications include integrated navigation systems such as in-vehicle infotainment (IVI) and head units, integrated telematics control units (TCU) and V2X.

The modules include new generation 6-axis inertial measurement units (IMUs) which deliver low-latency 100 Hz RAW data output. They offer a low-latency 50-Hz position update rate, ideal for use in real-time applications. The automotive dead reckoning (ADR) output combines the GNSS fix with IMU data to deliver accurate positioning output for a given scenario. Additional GNSS-only output enables seamless integration into a variety of third-party applications. The receiver also supports wake-on-motion, which enables smart features such as theft protection and power-efficient designs.

The modules offer innovative 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.

“The u-blox M9 sensor fusion products address the latest automotive market demands for quality, reliability and robustness. Availability and trustworthiness of position output are increased by using concurrent reception of four GNSS constellations,” says Aravinthan Athmanathan, Product Manager, Product Center Positioning at u-blox. “In addition, the spoofing detection feature is brought to a new level compared to the predecessor. Paired with low-latency position output, attitude and sensor data, the u-blox NEO-M9L is ready to meet current and future challenges facing the automotive market.”

All the module variants are compliant with AEC-Q104, the latest standard for ensuring the reliability of modules used in automotive applications. The engineering samples (ES) and the evaluation kits will be available by the end of September 2021.


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