CHCNAV i89 Compact Efficient Pocket-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, L6

NavIC/ IRNSS: L5*

PPP: B2b-PPP

SBAS: EGNOS (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: H: 10 cm | V: 20 cm

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

Visual survey : Typical 2~4 cm, range 2~15 m

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

Power consumption: Typical 2.2 W

Quick charge: 18 W QC. Full charge in 3 hours

Operating time on internal battery:

+ UHF/ 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

External power input: 5 V / 2 A

Hardware:

Size (D x H): Φ 133 x 87 mm (Φ 5.24 x 3.43 in)

Weight: 750 g (1.65 lb)

Front panel: 4 LED ; 2 physical buttons

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

Datasheet