GNSS 1.575GHz 72 Channel I2C SPI GPS Modules U Blox NEO-M8N-0

                 NEO-M8N-0 u-blox GPS Modules 100% Original

1.Abstract
This data sheet describes the NEO-M8 module family which provides concurrent reception of up to 3 GNSS (GPS, Galileo, GLONASS, BeiDou). NEO-M8 is backward compatible with NEO-7, NEO-6 and NEO-5 families.

2.Functional description

The NEO-M8 series of concurrent GNSS modules is built on the high-performing u-blox M8 GNSS engine in the industry- proven NEO form factor.
The NEO-M8 modules utilize concurrent reception of up to three GNSS systems (GPS/Galileo together with BeiDou or GLONASS), recognize multiple constellations simultaneously and provide outstanding positioning accuracy in scenarios where urban canyon or weak signals are involved. For even better and faster positioning improvement, the NEO-M8 series supports augmentation of QZSS, GAGAN and IMES together with WAAS, EGNOS, and MSAS. The NEO-M8 series also supports message integrity protection, geofencing, and spoofing detection with configurable interface settings to easily fit to customer applications.
The NEO‑M8M is optimized for cost-sensitive applications, while NEO-M8N and NEO-M8Q provide the best performance. The future-proof NEO-M8N and NEO-M8J include an internal flash that allows future firmware updates. This makes NEO-M8N and NEO-M8J perfectly suited to industrial and automotive applications.
The I2C-compliant DDC interface provides connectivity and enables synergies with most u‑blox cellular modules. For RF optimization, NEO-M8J, NEO-M8N, and NEO-M8Q feature an additional front-end LNA for easier antenna integration and a front-end SAW filter for increased jamming immunity.u-blox M8 modules use GNSS chips qualified according to AEC‑Q100, are manufactured in ISO/TS 16949 certified sites, and are fully tested on a system level. Qualification tests are performed as stipulated in the ISO16750 standard: “Road vehicles – Environmental conditions and testing for electrical and electronic equipment”.
The u-blox NEO-M8 modules can also benefit from the u-blox AssistNow assistance service. The Online service provides GNNS broadcast parameters, for example, ephemeris, almanac plus time or rough position to reduce the receiver’s time to first fix significantly and to improve acquisition sensitivity. The extended validity of AssistNow Offline data (up to 35 days) and AssistNow Autonomous data (up to 6 days) provide faster acquisition after a long off time.

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5.Supported GNSS constellations
The NEO-M8 GNSS modules are concurrent GNSS receivers which can receive and track multiple GNSS systems: GPS, Galileo, GLONASS and BeiDou. Owing to the dual-frequency RF front-end architecture, either GLONASS or BeiDou can be processed concurrently with GPS and Galileo signals providing reception of three GNSS systems. By default the M8 receivers are configured for concurrent GPS and GLONASS, including SBAS and QZSS reception. If power consumption is a key factor, the receiver should be configured for a single GNSS operation using GPS, Galileo, GLONASS or BeiDou and disabling QZSS and SBAS. The module can be configured to receive any single GNSS constellation or within the set of permissible combinations shown below

GLONASS
The NEO-M8 modules can receive and process the GLONASS satellite system as an alternative to the US-based global positioning system (GPS). u-blox NEO-M8 positioning modules are designed to receive and track the L1OF signals GLONASS provides at 1602 MHz + k*562.5 kHz, where k is the satellite’s frequency channel number (k = –7,..., 5, 6). The ability to receive and track GLONASS L1OF satellite signals allows design of GLONASS receivers where required by regulations. To take advantage of GPS and GLONASS, dedicated hardware preparation must be made during the design-in phase. See the NEO-8Q / NEO-M8 Hardware integration manual [1] for u-blox design recommendatinos
BeiDou
The NEO-M8 modules can receive and process the B1I signals broadcast at 1561.098 MHz from the BeiDou Navigation Satellite System. The ability to receive and track BeiDou signals in conjunction with another constellation results in higher coverage, improved reliability and better accuracy.
Galileo
The NEO-M8 positioning modules can receive and track the E1-B/C signals centered on the GPS L1 frequency band. GPS and Galileo signals can be processed concurrently together with either BeiDou or GLONASS signals, enhancing coverage, reliability and accuracy. The SAR return link message (RLM) parameters for both short and long versions are decoded by the receiver and made available to users via UBX proprietary messages

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