• WitMotion WTRTK-M ZED-F9P RTK GNSS GPS Module, Centimeter-Level Differential Positioning for UAV/Car, GPS/GLONASS/Galileo/BeiDou, UART TTL, NMEA/UBX/RTCM
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WitMotion WTRTK-M ZED-F9P RTK GNSS GPS Module, Centimeter-Level Differential Positioning for UAV/Car, GPS/GLONASS/Galileo/BeiDou, UART TTL, NMEA/UBX/RTCM

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS Module, Centimeter-Level Differential Positioning for UAV/Car, GPS/GLONASS/Galileo/BeiDou, UART TTL, NMEA/UBX/RTCM

WitMotion

$479.00 USD
$479.00 USD
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Overview

WTRTK-M is a high-precision RTK differential positioning module built on the u-blox ZED-F9P GNSS engine. It tracks GPS, GLONASS, Galileo, BeiDou and QZSS concurrently and delivers centimeter-level accuracy after RTK correction. The module provides dual-frequency reception, 5 Hz real-time output for mapping/autonomous applications, and a PC tool for one-key configuration of mobile/base stations and route visualization. Anti-interference and calibration technologies enhance data stability and security.

Key Features

  • Centimeter-level RTK: mobile/base workflow with quick convergence.

  • Multi-constellation, dual-frequency: GPS L1/L2; GLONASS G1/G2; BeiDou B1/B2; Galileo E1/E5b; QZSS L1/L2.

  • High sensitivity & fast start: 184 channels; cold start 24 s, hot start 2 s, recapture 2 s; convergence ≤10 s.

  • Time/heading performance: 1PPS RMS 30 ns (99% 60 ns); heading accuracy 0.4° (dynamic 0.3°).

  • Rich protocols: NMEA, UBX, RTCM 3.3; carrier-phase (RAWX) supported.

  • Configurable rate & 1 PPS: 0.25–20 Hz update (default 1 Hz); second pulse 0.25 Hz–10 MHz (default period 1 s, high-level ~100 ns).

  • Dual UART (TTL) and SMA-K / IPEX antenna options; PC software for viewing tracks and device setup.

  • Application scenes: UAV surveying/mapping, autonomous tractors/AGV, high-precision vehicle navigation, robotics.

How RTK Works (brief)

A fixed base station computes satellite-measurement error versus its known position and broadcasts RTCM differential data. The mobile station applies these corrections to achieve real-time, centimeter-level positioning.

Core Specifications

Item Spec
GNSS chip ZED-F9P RTK GNSS Module
Constellations/Bands GPS L1/L2, GLONASS G1/G2, BeiDou B1/B2, Galileo E1/E5b, QZSS L1/L2
Channels 184 search channels
Sensitivity Tracking -167 dBm; reacquisition -160 dBm; cold start -148 dBm; hot start -157 dBm
RTK accuracy (CEP) Horizontal/Vertical: 0.01 m + 1 ppm CEP
Single-point accuracy (CEP) Horizontal 1.5 m, Vertical 1.5 m
Speed accuracy 0.05 m/s
Heading accuracy 0.4° (dynamic 0.3°)
1PPS time accuracy RMS 30 ns, 99% 60 ns
Start/Recapture Cold 24 s, Hot 2 s, Recapture 2 s; Convergence ≤10 s
Baud rate 4 800–921 600 bps (default 115 200 bps)
Electrical level TTL
Protocols NMEA, UBX, RTCM 3.3; NMEA sentences: RMC/VTG/GGA/GSA/GSV/GLL
Update rate 0.25–20 Hz (default 1 Hz); note: very high rates increase serial load—keep ≤ 5 Hz for reliability
Onboard flash 4 MB, retains configuration after power-off
Carrier phase RAWX output supported
Restrictions Altitude ≤ 50 000 m; Speed ≤ 500 m/s; Acceleration < 4 g
Supply DC 3.6–6.0 V (typ. 5.0 V), ≈ 80 mA @ 5 V
Operating / Storage -40 °C to +85 °C / -40 °C to +105 °C
Dimensions 56 × 45 × 10 mm (front diagram marks ~46 mm height)

Interfaces & Indicators

Antenna: SMA-K (with IPEX option).
UART ports (TTL, 4-pin each):

  • P1 (right) – VI (3.6–6.0 V, 5 V rec.), G (GND), T1 (TX), R1 (RX).

  • P2 (left) – VO (3.6–6.0 V, 5 V rec.), G (GND), T2 (TX), R2 (RX).

P2 is used to input/output RTCM; P1 outputs NMEA data. P1/P2 VCC are internally connected—power from either one.

LEDs

  • PWR: Red ON = power applied.

  • TX1/TX2: Green flashes = port has data output.

  • PPS: Off before fix; blue flashes after 3D positioning.

  • RTK: Off when not in RTK; blue flashes in RTK Float; on in RTK Fixed.

Connection & Software

  • Wired setup: connect antenna to SMA; connect UART1 to PC to view location data.

  • Base/Mobile: set one module as base (outputs RTCM); the mobile consumes RTCM to achieve RTK—mobile can be used directly as an RTK rover after receiving corrections.

  • PC software: track visualization, data view, and one-key base/rover configuration.

Notes

  • Default baud is 115 200 bps. If you raise the output frequency, increase baud accordingly to avoid overflow (practical upper rate ≤ 5 Hz on standard links).

  • Custom development supported.

Details

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS, High-precision GPS module with centimeter-level accuracy, supports multiple satellite systems, features RTK, multi-band receiver, and various indicators.

High precision differential positioning GPS module with centimeter-level accuracy. Supports GPS, GLONASS, Galileo, BeiDou. Multi-band receiver, RTK technology, PPS, TX1, TX2, USR, RTK, PWR indicators.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS provides high-precision, secure, and stable location data with advanced anti-interference and calibration technology.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS ensures high precision data security and stability with advanced anti-interference and calibration technology for reliable location and navigation information.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS, High-precision RTK GNSS GPS software offers 5Hz real-time data for autonomous driving and mapping, featuring easy setup, satellite tracking, accurate positioning, and detailed telemetry.

High-precision RTK GNSS GPS software with 5Hz real-time data output for autonomous driving and mapping. Supports one-key setup, satellite tracking, accurate positioning, and detailed telemetry.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS, RTK uses GPS and a fixed station to send corrections to a mobile station, achieving centimeter-level accuracy for precise navigation.

RTK uses differential positioning with GPS. A fixed station calculates satellite positioning errors and transmits corrections wirelessly to a mobile station, enabling centimeter-level real-time accuracy for precise navigation.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS, The WTRTK-M features a high-precision ZED-F9P RTK GNSS module with multi-constellation support, fast start times, multiple protocols, and operates in extreme temperatures (-40°C to +85°C).

WTRTK-M features ZED-F9P RTK GNSS module with multi-constellation support, high precision (0.01m), fast start times, multiple protocols, and operates from -40°C to +85°C.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS, Wired setup guide for WitMotion RTK module: base/mobile stations, SMA antennas, UART1 PC connections. Includes software, manual, video, and protocol resources.

Wired connection diagram for WitMotion RTK module: base/mobile station setups, SMA antennas, UART1 PC connections. Includes software, manual, video, and protocol resources.

WitMotion WTRTK-M ZED-F9P RTK GNSS GPS, Dual frequency antenna and positioning module for high precision GNSS GPS

Dual frequency antenna and positioning module for high precision GNSS GPS

 

 

 

 

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