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CHCNAV | CHC Navigation i90 IMU-RTK GNSS

High-performance GNSS receiver with full GNSS tracking

The i90 GNSS receiver offers integrated IMU-RTK technology to provide robust and accurate positioning, in any circumstances. Unlike the standard MEMS-based GNSS receivers, the i90 GNSS IMU-RTK combines a state-of-the-art GNSS RTK engine, a calibration-free high-end IMU sensor and advanced GNSS tracking capabilities to dramatically increase RTK availability and reliability.

  • CHCNAV | CHC Navigation i90 IMU-RTK GNSS
CHCNAV | CHC Navigation
599 Gaojing Road, Building D
201702 Shanghai


Full GNSS positioning

Combining GPS, Glonass, Galileo and BeiDou constellations

The embedded 624-channel GNSS technology takes benefit from all GPS, GLONASS, Galileo and BeiDou signals and provides robust RTK position availability and reliability.

Hassle-free IMU-RTK surveying

Dramatically increase RTK availability

No complicated calibration process, rotation, leveling or accessories are necessary with the i90. Just a few meters walk will initialize the i90 internal IMU module and enable RTK survey in difficult field environment.

Extended connectivity

Instant NFC pairing of your controller

The i90 GNSS combines high-end connectivity modules: Bluetooth, Wi-Fi, NFC, 4G, and UHF radio modem. The 4G modem brings ease of use when working within RTK networks. The internal UHF radio modem allows long-distance base-to-rover surveying up to 5 km.

High accuracy. Always

Boost survey and stakeout speed by up to 20%

The i90 GNSS build-in IMU ensures interference-free and automatic pole-tilt compensation in real-time. 3 cm accuracy is achieved with pole-tilt range of up to 30 degrees.




  • Type
  • Year of initial introduction
  • Height [m]
  • Depth [m]
  • Width [m]
  • Total weight [kg]
  • Internal power supply
    Li-ion battery capacity
  • Operating time with internal power supply [hr]
  • Certifications
    FCC Part 15 (class B Device), FCC Part 22,24,90; Mark; NGS Antenna Calibration
  • Operating temperature: min. [°C]
  • Operating temperature: max. [°C]
  • Humidity resistance
  • Water sand and dust proof
  • Shock and vibration proof
    Survive a 2-meter pole drop
  • Max. simultaneous tracked channels
  • Tracked satellite signals
    GPS, GLONASS, Galileo, BeiDou
  • SBAS differential signals
  • Data input
    RTCM2.x, RTCM3.x, CMR input and output

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