GNSS SYSTEMS

i89 Compact Efficient Pocket-sized Visual IMU-RTK

Product Code :

I89

The i89 Visual IMU GNSS is a compact surveying tool equipped with a 1408-channel GNSS module, which enhances RTK availability, even in challenging environments. Its CHCNAV iStar2.0 software incorporates advanced ionospheric modeling algorithms, achieving 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. In addition, the i89 offers an impressive 16.5 hours of battery life and a lightweight 750g design, ensuring optimal productivity throughout various day-to-day surveying tasks.

The i89 features Visual Surveying capabilities, providing accurate 3D coordinate extraction from real-world video and 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. In addition, the integrated AR visual navigation and stakeout features can cut the operator’s workload by half, regardless of their experience level in the field.

Caractéristiques:

Size (LxWxH)Φ133 mm x 87 mm (Φ 5.24 in × 3.43 in）
Weight750 g (1.65 lb)
Channels1408 channels with iStar2.0
GPSL1C/A, L2C, L2P(Y), L5
GLONASSL1, L2, L3
GalileoE1, E5a, E5b, E6
BeiDouB1I, B2I, B3I, B1C, B2a, B2b
QZSSL1C/A, L1C, L2C, L5, L6
NavIC/ IRNSSL5
PPPB2b-PPP
SBASEGNOS (L1, L5)
Real time kinematic (RTK)H: 8 mm + 1 ppm RMS V: 15 mm + 1 ppm RMS Initialization time: 99.9%
Post-processing kinematic (PPK)H: 3 mm + 1 ppm RMS V: 5 mm + 1 ppm RMS
PPPH: 10cm | V: 20cm
High-precision staticH: 2.5 mm + 0.1 ppm RMS V: 3.5 mm + 0.4 ppm RMS
Static and rapid staticH: 2.5 mm + 0.5 ppm RMS V: 5 mm + 0.5 ppm RMS
Code differentialH: 0.4 m RMS | V: 0.8 m RMS
AutonomousH:1.5 m RMS | V: 2.5 m RMS
Visual stakeoutH: 8 mm + 1 ppm RMS V: 15 mm + 1 ppm RMS
Visual surveyTypical 2~4 cm, range 2~15 m
Positioning rate1 Hz, 5 Hz and 10 Hz
Time to first fixCold start: < 45 s, Hot start: < 10 s Signal re-acquisition: < 1 s
IMU update rate200 Hz, AUTO-IMU
Till angle0-60°
RTK tilt-compensatedAdditional horizontal pole-tilt uncertainty typically less than 8 mm + 0.7 mm/° tilt
TemperatureOperating: -40°C to +65°C (-40°F to +149°F) Storage: -40°C to +85°C (-40°F to +185°F)
Ingress protectionIP68 (according to IEC 60529)
Waterproof and breathable membranePrevent water vapor from entering under harsh environments
Cameras Sensor pixelsDual-camera, global shutter with 2 MP & 5 MP
Operating time on internal batteryUHF/ 4G RTK Rover w/o camera: up to 16.5 h Visual Stakeout/Visual Survey: up to 9.5 h UHF RTK Base: up to 10 h Static: up to 22 h


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