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CHCNAV

i89 Pocket-Sized Visual IMU-RTK GNSS



CHCNAV i89 Compact Efficient Pocket-Sized Visual IMU-RTK Surveying & Engineering

Precision Surveying with the CHCNAV i89 GNSS Receiver

Compact, Efficient, Pocket-Sized Visual IMU-RTK

The CHCNAV i89 Visual IMU GNSS is a compact surveying tool equipped with a 1408-channel GNSS module, enhancing RTK availability even in challenging environments. The i89's CHCNAV iStar2.0 software incorporates advanced ionospheric modeling algorithms, achieving a high-integrity RTK fix rate, particularly critical in regions of intense solar activity. The implementation of AUTO-IMU technology eliminates the need for manual initialization, streamlining field operations for increased efficiency. Additionally, the i89 offers an impressive 16.5 hours of battery life and a lightweight 750 g design, ensuring optimal productivity throughout various day-to-day surveying tasks. The i89 also features Visual Surveying capabilities that provide accurate 3D coordinate extraction from real-world video, simplifying measurements in locations with signal obstructions, limited accessibility, or safety concerns. The combination of panoramic capture mode and integrated IMU significantly improves the accuracy and efficiency of photogrammetric surveys. Integrated AR visual navigation and stakeout features can cut the operator’s workload by half, regardless of their level of experience in the field.

Extreme GNSS Performance

Boost fix rate over 96% in solar active regions. The i89 GNSS delivers unmatched performance with its 1408 channels and integrated SoC for full constellation tracking. Robust algorithms increase fix rates by 15% even in harsh environments. CHCNAV iStar2.0 and ionospheric interference rejection technology provide an outstanding 96% reliable fix rate, ideal for low latitude regions with high ionospheric activity. Its narrow-band multipath mitigation technology improves data quality by 20%, ensuring accurate RTK measurements, and its hybrid GNSS engine provides unmatched accuracy and reliability.

Visual Survey Excellence with VR

Measure previously inaccessible points with precision. The i89 brings the power of vision to GNSS surveying, enabling accurate measurements of points where signals are obstructed or access is difficult or unsafe. Its premium cameras extract survey-grade 3D coordinates from real-world video, offering efficiency and reliability. Dynamic panoramic capture mode with 85% overlap improves efficiency by 60% for exceptional accuracy. The integration of high-precision IMU data into the video photogrammetry algorithm significantly improves point measurement performance.

AUTO-IMU Technology

Efficiency and Precision in Every Measurement. The i89's built-in, interference-free 200 Hz Auto-IMU eliminates the need for manual initialization and provides reliable measurements. Automatic pole tilt compensation guarantees accuracy to within 3 cm over a 60-degree tilt range, saving up to 30% time while maintaining accuracy.

Efficient 3D Modeling

Seamless 3D Modeling for Various Applications. The i89's video photogrammetry algorithms enable 3D modeling of buildings and facades. It effectively allows the fusion of drone and GNSS RTK data for efficient 3D modeling over large areas, overcoming the typical distortions associated with drone-mounted cameras. Additionally, the i89's compatibility with industry-standard 3D modeling software ensures flexibility and convenience for users.

AR Visual Navigation & Stakeout

50% time savings for less experienced operators. The i89's AR visual navigation and staking simplify field operations, saving even the most inexperienced operators up to 50% of their time. By tightly integrating technologies, the i89's GNSS, IMU, and Visual systems are 10 times more reliable than standard gyroscope-based GNSS. The 1.5 GHz processor enables seamless dual-camera operation, while 5.8 GHz adaptive Wi-Fi ensures fast AR data transfer. Virtual Pole Tip™ (VPT™) technology enables real-time visualization of points over the CAD project design. Versatile AR Stakeout supports a wide range of applications, including linear, CAD-based, boundary staking, and more.

16.5H Battery Life and IP68 Design

Extended battery life, efficient and durable. The i89's high energy density battery provides up to 16.5 hours of operation. Its 18 W intelligent fast charge for a full battery charge in just 3 hours increases operational efficiency and further extends battery life. Its compact 750 g design seamlessly fits GNSS, IMU, and two cameras into a pocket-sized receiver through optimal camera integration, reducing volume and height. It is IP68-rated and can withstand a 2 m mast drop.

Why Choose CHCNAV i89?

The CHCNAV i89 GNSS receiver is an investment that maximizes control, accuracy, and efficiency in surveying and engineering tasks. Its highly integrated components, including GNSS, IMU, and dual-camera technologies, offer quick, easy installation and versatility in the field. With multiple GNSS positioning modes, including RTK and visual surveying, and advanced IMU-RTK pole tilt compensation, the i89 ensures precise operations even in challenging conditions. Its robust design and extended operational capabilities make the i89 a superior choice for enhancing productivity and efficiency in modern surveying and engineering projects.


i89 features

Compact GNSS RTK that integrates the latest GNSS, IMU, and dual-camera video-photogrammetry technologies

i89 Pocket-Sized Visual IMU-RTK GNSS

i89 POCKET-SIZED VISUAL IMU-RTK GNSS

EXTREME GNSS PERFORMANCE
VISUAL POWER ON TOP