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    • WTRTK-M20D

    RTK positioning module WTRTK-M20D

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    Overview

    1. 22nm GNSS SoC chip Alice

    2. Supports three-vector RTK (master-slave antenna positioning results + dual-antenna orientation)

    3. Supports BDS-3 and B2b (PPP)*

    4. High-performance anti-interference*

    5. Supports Ethernet port, can embed SDK differential account, supports gPTP time synchronization

    6. AB partition design, stable and reliable OTA upgrade

    7. Supports system self-test and fault diagnosis*

    8. Orientation baseline length range: 20cm to unlimited, standard is 1 meter


    Specifications


    Indicator Index
    GNSS Band1

    BDS B1I, B2I, B1C*, B2b (PPP)*

    GPS L1 C/A, L1C*, L2

    GLONASS G1, G2

    Galileo E1, E5b

    QZSS L1C*, L2, L1 C/A

    Number of Channels1500
    Re-acquisition Time≤1s
    Measurement Accuracy10Hz
    GNSS Observation Transfer Rate10Hz
    Single Point Positioning Accuracy

    Horizontal2, 3: 1.5m (RMS)

    Vertical2, 3: 2.5m (RMS)

    RTK Accuracy

    Horizontal2, 3: 1.0cm+1ppm (RMS)

    Vertical2, 3: 1.5cm+1ppm (RMS)

    Heading Accuracy0.2°/1m baseline (RMS)
    Timing Accuracy3≤20ns (RMS)
    Velocity Accuracy40.03m/s (RMS)
    Initialization Time

    Cold start: 30s 6

    Hot start: 5s 7

    RTK Initialization Time25s (Typical value)
    Anti-jamming*

    65dBc (signal-to-noise ratio)

    Multitone interference with 6 or more pulses.

    Narrowband interference whose bandwidth is not less than

    10% of the signal bandwidth.

    Fast sweep interference.

    L-Band10-5 (Error rate)
    Power Consumption5530mW
    Weight1.75g (Typical value)
    Size16.0x21.0x2.6mm (Typical value)


    * Support in special firmware.

    Note 1: The signal of B1C, B2b, L1C, SBAS is supported in special firmware.

    Note 2: Typical value.Performance will be affected by GNSS status,satellites’ location,baseline length,multipath and

    other interference.

    Note 3: -130dBm and more than 12 satellites are available.

    Note 4: Open sky without any obstruction,99%@static.

    Note 5: Typical value. Power consumption of antenna and peripherals is not included.

    Note 6: Typical value. The duration from power-up to the first output of a valid single-point solution after clearing the

    ephemeris/almanac/approximate position and time information.

    Note 7: Typical value. The duration from power-up to the first output of a valid single-point solution, given that the

    receiver has stored valid ephemeris/almanac/approximate position and reasonably accurate time (error less than 5

    minutes). The special firmware can support 2s hot start, and the firmware can’t support network port.


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