K902 GNSS Module
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Introduction
Product Parameter
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Introduction
K902 integrates the QC7820 SoC and an onboard IMU, enabling seamless RTK positioning through GNSS/INS fusion. It features multi-constellation support, advanced anti-interference, CAN/Ethernet interfaces. It's designed specifically for applications in intelligent driving, UAV, robotics, surveying & mapping, and digital construction.


  • Support GPS, BDS-2, BDS-3, GLONASS, GALILEO, NAVIC, QZSS and SBAS
  • RF&BB Integrated High-Precision GNSS SoC Chip
  • Brand New Dual Core CPU Structure
  • Support PPP-B2b, PPP-HAS Service
  • Support GNSS+INS Navigation
  • Support CAN & Network
01
Next-Gen QC7820 SoC Technology
The K902 integrates ComNav's cutting-edge QC7820 SoC chip, delivering industry-leading GNSS precision. It supports full-constellation tracking and provides centimeter-accurate positioning through advanced floating-point processing for unmatched reliability in demanding applications.
02
Onboard IMU for Reliable Navigation
The K902 integrates a high-precision IMU module, enabling seamless RTK positioning through GNSS/INS fusion. Its advanced inertial navigation algorithm maintains continuous high accuracy positioning even during GNSS signal outages.
03
Multi Anti-Interference Technologies
The K902 module features an advanced internal adaptive anti-interference system incorporating wideband reception, narrowband suppression, and continuous-wave rejection technologies. Its intelligent algorithm effectively mitigates all types of RF interference, ensuring high-quality observation data even in the most challenging electromagnetic environments.
04
Multi-interfaces Supported
The K902's integrated CAN and Ethernet interfaces deliver both industrial-grade communication reliability and high-speed data exchange capabilities.
Product Parameter
Performance
Physical
Communications
Inertial Sensor
Performance
  • Channels
    1688
  • Signal Tracking
    GPS:  L1C/A, L2P, L2C, L5, L1C
    BDS-2: B1I, B2I, B3I
    BDS-3: B1I, B3I, B1C, B2a, B2b
    GLONASS: G1, G2, G3*
    Galileo: E1, E5b, E5a, E5 AltBoC*, E6c*
    QZSS: L1C/A, L2C, L5, L1C
    SBAS: L1C, L5/A
    NAVIC*: L5
  • Cold Start
    < 20 s (Adding Acceleration Capture Module)
  • Hot Start (with RTC)
    < 10s (Typical)
  • Signal Reacquisition
    < 1s
  • RTK Initialization time
    < 5s (D < 10km)
  • Initialization Reliability
    > 99.9 %
  • Velocity accuracy
    ≤ 0.02 m/s
  • Time Accuracy
    20ns
  • PPP Convergence Time
    < 15 min
  • Post Processing
    2.5 mm + 1 ppm Horizontal
    5 mm + 1 ppm Vertical
  • Single Baseline RTK
    8 mm + 1 ppm Horizontal
    15 mm + 1 ppm Vertical
  • DGPS
    <0.4 m RMS
  • SBAS
    1 m 3D RMS
  • Standalone
    1.5 m Horizontal; 3 m Vertical
  • PPP
    0.1 m Horizontal; 0.2 m Vertical
  • ADR Position Error
    <3% of distance travelled without GNSS


Note: Items marked with *are only support by specific firmware.

Physical
  • Size (W x L x H)
    17 mm × 22 mm × 2.5 mm
  • Weight
    1.9 g
  • Hardware interface
    LGA 54 pin
  • Power consumption
    0.4 W (Anti-interference off)
  • Input voltage
    + 3.3 V ± 5% DC
  • Working temperature
    -40 °C to + 85 °C
  • Storage temperature
    -55 °C to + 125 °C
  • LNA Power(Exernal)
    +3.3V ~ +5V ± 5%VDC @ 0-100mA
  • LNA Gain
    20 ~ 35 dB (Suggested)
  • Impedance Match
    50 Ω
Communications
  • UART
    2
  • UART3 or CAN (optional)
    1
  • PPS
    1
  • EVENT
    1
  • I2C
    1
  • SPI
    1
  • ETH
    1 (Corresponding Pin is 24, 25, 28, 29)
  • Correction data I/O
    RTCM 2.X, 3.X
  • Position data output
    - ASCII (NMEA-0183): GGA, GSA, GSV, RMC, HDT, VHD, ZDA, VTG, GST, GLL
    - Binary: ComNav Binary
    - Position Output Rate: 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz*, 50 Hz*
    - IMU Data Rate: 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz*, 50 Hz*, 100 Hz*



Note: Items marked with *are only support by specific firmware.


Inertial Sensor
  • Gyroscope
    Range:  ± 125°/s
    Bias Repeatability: 0.5°/s
    Bias Stability: 5°/h
    Angular Random Walk: 0.12°/√h
  • Accelerometer
    Range:  ± 2g/s
    Bias Repeatability: 20 mg
    Bias Stability: 50 μg
    Velocity Random Walk: 0.07 m/s/√h
Download
  • SinoGNSS K902 GNSS Module_EN.pdf(1.84MB)
    2025-11-04
    DOWNLOAD
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