NEO-M8U - untethered dead reckoning M8 GNSS module with 3D inertial sensors
The u-blox NEO-M8U Untethered Dead Reckoning GNSS module introduces u‑blox’s Untethered Dead Reckoning (UDR) technology which provides continuous navigation without requiring speed information from the vehicle.
The strength of UDR is particularly apparent under poor signal conditions, where it brings continuous positioning in urban environments, even to devices with antennas installed within the vehicle. Useful positioning performance is also available during complete signal loss, for example in parking garages and short tunnels. With UDR, positioning starts as soon as power is applied to the module, before the first GNSS fix is available.
- Independent of any electrical connection to the car
- Positioning accuracy in dense cities and covered areas
- Complete positioning solution with integrated 3D sensors
- Compatible with all modules of the NEO family
- Real-time positioning update rate of up to 30 Hz
The EVK-M8U evaluation kit is an ideal way to assess the performance of the NEO-M8U for your application.
This innovative technology brings the benefits of dead reckoning to installations previously restricted to using GNSS alone and significantly reduces the cost of installation for after‑market dead reckoning applications.
The NEO‑M8U may be installed in any position within the vehicle without configuration. In addition to its freedom from any electrical connection to the vehicle, the on‑board accelerometer and gyroscope sensors result in a fully self‑contained solution, perfect for rapid product development with reliable and consistent performance. The intelligent combination of GNSS and sensor measurements enables accurate, real‑time positioning at rates up to 20 Hz, as needed for smooth and responsive interactive applications. Native high rate sensor data is made available to host applications such as driving behaviour analysis or accident reconstruction.
The NEO‑M8U includes u‑blox’s latest generation GNSS receiver, which adds Galileo to the multi‑constellation reception that already includes GPS, GLONASS, BeiDou and QZSS. The module provides high sensitivity and fast GNSS signal acquisition and tracking. UART, USB, DDC (I2C compliant) and SPI interface options provide flexible connectivity and enable simple integration with most u‑blox cellular modules.
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NEO-M8U at a glance
| Product information | |
|---|---|
| Product variants | NEO-M8U |
| GNSS | BeiDou, Galileo, GLONASS, GPS/QZSS |
| No. of concurrent GNSS | 3 |
| Temperature range (°C) | -40 ~ +85 |
| Supply (V) | 2.7 ~ 3.6 |
| Dimensions (mm) | 12.2 x 16.0 x 2.4 |
