Appendix D: Gps With Dead Reckoning Feature; Ublox-Neo M8L Overview - Nexcom VTC 7260 User Manual

Appendix D: GPS with Dead Reckoning Feature

a d: GPs
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uBlox-NEO M8L Overview

The NEO-M8L standalone concurrent GNSS module with 3D dead-reckoning
(DR) is built on the exceptional performance of the u-blox M8 concurrent
GNSS (GPS, GLONASS, Galileo-ready
the compact and industry proven NEO form factor.
The NEO-M8L delivers a complete, self-contained solution for road-
vehicle Automotive Dead Reckoning (ADR) applications in an exceptionally
compact 16 x 12 mm form-factor. The module combines information from
GNSS, on-board 3-Dimensional inertial sensors, and speed data from the
vehicle to deliver continuous navigation in road-vehicle applications. Its
size and features make it suitable for aftermarket and first-fit navigation
and Telematics applications. Position measurement rates of up to 2 Hz are
available with optional extrapolation (based on vehicle dynamics) extending
reporting rates to 20 Hz. Inertial sensor measurements are available to
external applications at rates up to 10 Hz.
For ease of application, both hardware and message interfaces are supported
for vehicle speed. u-blox' ADR and GNSS technologies deliver continuous
and accurate positioning throughout the journey. u-blox' tightly-coupled
navigation solution delivers significant improvements in navigation accuracy,
especially in difficult urban environments. Dead reckoning sensors in
conjunction with speed information from the vehicle also provide navigation
before GNSS signals are acquired and during periods of complete signal loss.
The introduction of three dimensional sensing and signal processing (for
both acceleration and direction) extend accurate navigation to urban multi-
level highways and car-parks as well as extending dead-reckoned range in
tunnels and urban canyons. 3D sensing also enables flexibility in orientation
of the receiver with respect to the vehicle frame.
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The NEO form factor allows easy migration from previous NEO generations.
Sophisticated RF architecture and interference suppression ensure maximum
performance even in GNSS-hostile environments. The NEO-M8L module
includes an internal Flash that allows simple firmware upgrades. These
features make the NEO-M8L perfectly suited to industrial and automotive
applications. UART, SPI and DDC (I
connectivity and enable synergies with most u-blox cellular modules.
u-blox M8 modules use GNSS chips qualified according to AEC-Q100,
and are manufactured in ISO/TS 16949 certified sites. Qualification tests
are performed as stipulated in the ISO16750 standard: "Road vehicles
- Environmental conditions and testing for electrical and electronic
equipment".
u-blox' AssistNow Assistance services supply aiding information, such as
ephemeris, almanac and time, reducing the time to first fix significantly and
improving acquisition sensitivity. The u-blox M8 generation extends validities
of AssistNow Offline data (up to 35 days) and AssistNow Autonomous
data (up to 6 days), providing the benefits of faster acquisition for longer
durations since last use.
With future flash firmware update.
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C compatible) interfaces provide
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VTC 7260 Series User Manual