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CHCNAV i93 Visual IMU-RTK GNSS

A new-generation GNSS receiver that combines precise RTK positioning, IMU technology, and advanced dual cameras into one powerful surveying solution. The CHCNAV i93 enables fast and accurate measurement even in locations where traditional GNSS surveying is challenging or measurement points are difficult to access.

Survey more – even in hard-to-reach locations

With the i93 visual surveying, points can be measured and staked out efficiently via the camera view. 3D visualization and AR-based stakeout simplify work on construction sites, in cramped spaces, and in situations where there is no direct access to the measurement point. Dual cameras also allow for 3D data collection and site documentation.

Key benefits

• GNSS RTK, IMU, and visual surveying in one device
• 1892-channel GNSS receiver
• RTK accuracy up to 0.8 cm + 1 ppm (H)
• 200 Hz IMU
• Dual cameras for visual surveying
• AR-based 3D stakeout
• Visual offset measurement
• PointSky support for centimeter-level positioning without a local base station or NTRIP connection
• 4G LTE and UHF support
• IP68 protection
• Operating time up to 34 hours as an RTK rover

Visual surveying everywhere

The i93 dual cameras bring a new dimension to GNSS surveying. The camera system allows for the determination of 3D coordinates of points visually and the measurement of objects that cannot be reached directly with a surveying pole.

AR-based visualization makes stakeout more intuitive and helps to identify the measured targets directly in the environment. This reduces unnecessary movement and speeds up work, especially on construction and infrastructure sites.

Precise positioning for challenging environments

The i93 1892-channel GNSS receiver supports GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS systems. CHCNAV iStar technology and the StellaX GNSS chip are designed to improve positioning stability and interference rejection in challenging environments.

The 200 Hz IMU enables effective tilt compensation without the need to keep the surveying pole perfectly vertical. This speeds up measurement and makes point collection flexible in various terrain and construction site conditions.

PointSky – centimeter-level positioning without a local base station

The i93 supports the CHCNAV PointSky service, which enables real-time centimeter-level positioning via satellite corrections without a local base station or NTRIP service. The manufacturer-stated PointSky accuracy is up to 2.5 cm horizontally and 5 cm vertically.

3D modeling directly from the measurement site

With the i93, dynamic panoramic video can be collected for 3D modeling. The same device is thus suitable not only for traditional GNSS surveying but also for site documentation and generating 3D data.

The solution is suitable, for example, for documenting terrain models, buildings, and infrastructure sites, as well as for supplementing existing 3D data.

Designed for demanding site conditions

The i93 is built to withstand professional use. IP68 protection, 2-meter drop resistance, and an operating temperature range of -40 °C to +65 °C make the device suitable even for demanding Finnish terrain and construction site conditions. It weighs only 1.15 kg and has an RTK rover operating time of up to 34 hours.

Versatile connectivity

Built-in 4G LTE, Wi-Fi, Bluetooth, and NFC allow for smooth connectivity to the field controller and other systems. The integrated UHF modem supports various RTK surveying configurations and enables work in base station setups as well.

Suitable for diverse professional use

The i93 is suitable for, for example:

• land surveying
• topographic mapping
• property and boundary surveys
• construction surveys
• as-built surveys
• infrastructure construction
• construction site stakeout
• measuring hard-to-reach objects
• 3D modeling
• visual documentation of sites

Technical specifications

• Full GNSS support
• 1892 GNSS channels
• 200 Hz IMU
• RTK accuracy up to 0.8 cm + 1 ppm (H)
• RTK accuracy up to 1.5 cm + 1 ppm (V)
• PointSky accuracy up to 2.5 cm (H) / 5 cm (V)
• Dual cameras
• 3D visual surveying
• AR-based stakeout
• 4G LTE
• Bluetooth
• Wi-Fi
• NFC
• UHF modem 410–470 MHz
• Weight 1.15 kg
• Operating time up to 34 h as an RTK rover
• IP68 protection
• Drop resistance 2 m
• Operating temperature -40 °C – +65 °C

What does Mittatukku offer?

• Setup in Finnish
• User training
• Technical support
• Maintenance and calibration services
• Financing and leasing solutions
  
  Download PDF: Technical specifications i93