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CHCNAV i76 Palm-Sized Visual IMU-RTK GNSS

Original price was: $9,490.00.Current price is: $8,490.00.

A lightweight tool with integrated GNSS, IMU RTK, dual cameras, CAD+ AR visual stakeout, IP68 protection, and 2-meter drop resistance for improved efficiency in the field.

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EFFICIENT CAD AR STAKEOUT

Enhance project stakeout efficiency by up to 40%

The i76 boosts stakeout efficiency in construction projects by 40% in comparison to traditional surveying methods by integrating CAD base maps with augmented reality (AR) visualization, utilizing GNSS, IMU, AR, and mixed reality (MR) technologies. This offers a comprehensive and intuitive view of site layouts, aiding path planning, minimizing detours, and simplifying tasks like pipeline direction anticipation and foundation building. The AR overlay is particularly valuable for redline reviews, centerline verifications, and optimization of stakeout operations in diverse construction scenarios. 

ULTRA-IMU TECHNOLOGY

Boost Accuracy by 30%

The i76 integrates a 5th Gen interference-free Ultra IMU operating at 200 Hz, enhanced by EKF algorithms for optimal measurement accuracy. It includes automatic pole tilt compensation, maintaining accuracy within 3 centimeters even at a 60-degree tilt, and ensuring reliable and user-friendly tilt measurements. The device simplifies operations with its “poke-and-measure” feature, eliminating manual IMU initialization or bubble centering. The IMU functions regardless of the range pole’s position, whether handheld, shoulder-mounted, or placed horizontally.

AIR-MEDIUM ANTENNA & HYBRID GNSS ENGINE

Achieve an RTK fix rate of over 96% in solar active regions
The i76 GNSS excels in solar-active and other challenging environments with its 4th Gen air-medium GNSS antenna and hybrid GNSS engine, offering robust tracking of all GNSS constellations and resistance to interference. Enhanced by iStar 2.0 technology, it achieves an RTK fix rate of over 96%, which is ideal for areas with high ionospheric activity. Pairing with CHCNAV base stations, it extends UHF coverage up to 25 km in standard conditions and 5-8 km in areas with obstructed signals, ensuring high-quality data in diverse surveying scenarios.
 

PALM-SIZED WITH GNSS, IMU AND DUAL CAMERAS

Optimize performance with extended endurance and reliable lightweight excellence
The i76 combines lightweight design with rugged durability, weighing just 450g and offering advanced integration of GNSS, Auto-IMU, and dual cameras for seamless surveying. With IP68 protection and 2-meter drop resistance, its durable biomimetic structure and sapphire camera lenses withstand harsh conditions and resist impacts and scratches. Intelligent cloud-based OTA upgrades and an energy-efficient lithium battery provide over 17 hours of continuous operation, ensuring reliability and extended endurance in the field.
 

SPECIFICATIONS

GNSS PERFORMANCE
Channels 1408 channels with iStar2.0
GPS L1 C/A, L2C, L2P, L5
GLONASS L1, L2
Galileo E1, E5a, E5b, E6
BeiDou B1I, B2I, B3I, B1C, B2a, B2b
SBAS L1, L2
QZSS L1C/A, L1C, L2C, L5
GNSS Accuracies
Real Time Kinematics (RTK) Horizontal: 8 mm + 1 ppm RMS
Vertical: 15 mm + 1 ppm RMS
Initialization time: <10 s
Initialization reliability: >99.9%
Post-processing kinematics (PPK) Horizontal: 3 mm + 1 ppm RMS
Vertical: 5 mm + 1 ppm RMS
Post-processing static Horizontal: 2.5 mm + 0.5 ppm RMS
Vertical: 5 mm + 0.5 ppm RMS
Time to first fix Cold start: < 45s
Hot start: < 10s
Signal re-acquisition: < 1s
RTK tilt
-compensated
Additional horizontal pole-tilt uncertainty typically less than 8 mm + 0.7 mm/° tilt down to 30°
Hardware
Size (L x W x H)  Φ 106 mm x 55.6 mm
Weight 0.450 kg (0.99 lb)
Survive a 2-meter pole drop
Front panel  2 synchronized LED, 1 button

Sensor pixels

Image group capture

Dual cameras with 2 MP each

Method: video photogrammetry.
Rate: typically 2 Hz, up to 25 Hz.
Max. capture time: 60s with an
image group size of appr. 60 MB.

Features LandStar software, support
Visual Navigation, CAD AR Visual
Stakeout.
Communication
Wireless connection NFC for device touch pairing
Wi-Fi Wi-Fi 2.4G 802.11 b/g/n
Wi-Fi 5G 802.11ac
Bluetooth® v4.2,
backward compatible
   
Ports  1 x USB Type-C port (external
power, data download, OTG
firmware update)
1 x UHF antenna port (SMA
female)
UHF radio Internal Rx Only: 410 – 470 MHz
Protocol: CHC, Transparent,
TT450
Link rate: 9600 bps to 19200 bps
Data formats RTCM 2.x, RTCM 3.x, CMR input /
output
HCN, HRC, RINEX 2.11, 3.02
NMEA 0183 output
NTRIP Client, NTRIP Caster
Data storage 8 GB high-speed memory

Power consumption

Quick charge

Typical 2.2 W, 18 W QC.

Full charge in 3 hours

Li-ion battery capacity Built-in non-removable battery
9,600 mAh, 7.4 V
Operating time on
internal battery
UHF/ 4G RTK Rover w/o camera:
up to 17 h
Visual Stakeout: up to 10 h
Static: up to 22 h
External power input Type-C 5 V / 2 A – Full charge in 4.5 hours
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