CHCNAV i76 Efficient, Palm-Sized Visual IMU-RTK (1408CH)

GNSS Performance:

Channels: 1408 channels with iStar2.0

GPS: L1C, A, L2C, L2P(Y), L5

GLONASS: L1, L2, L3*

Galileo: E1, E5a, E5b, E6*

BeiDou: B1I, B2I, B3I, B1C, B2a, B2b

QZSS: L1C/A, L1C, L2C, L5

NavIC/ IRNSS: L5

SBAS: L1, L5*

GNSS Accuracies

RTK: H: 8 mm + 1 ppm RMS; V: 15 mm + 1 ppm RMS; Initialization time: <10 s; Initialization reliability: >99.9%

PPK: H: 3 mm + 1 ppm RMS ; V: 5 mm + 1 ppm RMS

PPP: Support PPP-B2b; H: 10cm | V: 20cm

High-precision static: H: 2.5 mm + 0.1 ppm RMS ; V: 3.5 mm + 0.4 ppm RMS

Static and rapid static: H: 2.5 mm + 0.5 ppm RMS ; V: 5 mm + 0.5 ppm RMS

Code differential: H: 0.4 m RMS | V: 0.8 m RMS

Autonomous: H:1.5 m RMS | V: 2.5 m RMS

Visual stakeout (3): H: 8 mm + 1 ppm RMS; V: 15 mm + 1 ppm RMS

Positioning rate (4): 1 Hz, 5 Hz and 10 Hz

Time to first fix (5): Cold start: <45 s, Hot start: <10 s; Signal re-acquisition: <1 s

IMU update rate 200 Hz, AUTO-IMU

Till angle 0-60°

RTK tilt-compensated: Additional horizontal pole-tilt uncertainty typically less than 8 mm + 0.7 mm/° tilt

Electrical

Charging time: Full charge in 4.5 hours

Operating time on internal battery(7):

+ UHF/ 4G RTK Rover w/o camera: up to 17 h

+ Visual Stakeout: up to 10 h

+ Static: up to 22 h

Charging spec: Type-C 5 V / 2 A

Hardware:

Size (D x H): Φ106 mm x 55.6 mm (Φ 4.17 in × 2.1 in)

Weight: 450 g (0.99 lb)

Front panel: 2 synchronized LED, 1 button

Tilt sensor: Calibration-free IMU for pole-tilt compensation.; Immune to magnetic disturbances.

Datasheet