CHCNAV i90 Pro IMU-RTK GNSS Receiver

High-Performance IMU RTK GNSS Receiver

The i90 Pro GNSS receiver integrates the latest CHCNAV's IMU-RTK technology and L-Band corrections services to extend RTK positioning capabilities in any location. It features a state-of-the-art GNSS RTK engine, a calibration-free high-end IMU sensor, and advanced GNSS tracking for enhanced RTK availability and reliability. The i90 Pro's automatic pole-tilt compensation boosts survey and stakeout speed by up to 30%, enabling high productivity and reliability in construction and land surveying projects.

Key Features:

Full GNSS Positioning

Combines GPS, Glonass, Galileo, and BeiDou constellations with an embedded 336-channel GNSS technology. It leverages all available signals to provide robust RTK position availability and reliability for various surveying and positioning applications.

L-Band PPP Corrections

Compatible with L-Band and RTX™ correction signals. When connected to third-party L-Band correction services, the i90 Pro GNSS delivers accurate, sub-decimeter positioning in areas where RTK networks, GSM coverage, or traditional GNSS base stations are unavailable.

Hassle-Free IMU-RTK Surveying

Dramatically increases RTK availability without complicated calibration, rotation, leveling, or accessories. Simply tilt the range pole a few times to initialize the i90 Pro's internal IMU module, enabling GNSS RTK survey even in challenging field environments.

Extended Connectivity

Features instant NFC pairing with controllers and includes high-end connectivity modules: Bluetooth, Wi-Fi, NFC, 4G, and an internal UHF radio modem. The 4G modem simplifies use within RTK networks, while the UHF radio modem supports long-distance base-to-rover surveying up to 5 km.

High Accuracy. Always

Boosts survey and stakeout speed by up to 30%. The built-in IMU ensures interference-free and automatic pole-tilt compensation in real-time, achieving 3 cm accuracy with a pole-tilt range of up to 30 degrees.

Specifications:

GNSS Performance

• Channels: 336 channels
• Constellations: GPS (L1C, L1C/A, L2E, L2C, L5), GLONASS (L1C/A, L2 C/A, L3 CDMA), Galileo (E1, E5a, E5b, E5AltBOC, E6), BeiDou (B1, B2, B3), QZSS (L1C/A, L5), IRNSS (L1C/A, L5), SBAS (L1C/A, L1 SAIF, L2C, L5, LEX), L-BAND (L5), RTX®

GNSS Accuracies

• Real-time kinematics (RTK): Horizontal: 8 mm + 1 ppm RMS, Vertical: 15 mm + 1 ppm RMS
• Post-processing kinematics (PPK): Horizontal: 2.5 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
• Code differential: Horizontal: 0.25 m RMS
• Autonomous: Horizontal: 1 m RMS, Vertical: 1.5 m RMS
• Positioning rate: Up to 50 Hz
• Time to first fix (3): Cold start: < 45 s, Hot start: < 10 s, Signal re-acquisition: < 1 s
• RTK tilt-compensated: Additional horizontal pole-tilt uncertainty typically less than 10 mm + 0.7 mm/° tilt

Hardware

• Size (L x W x H): 159 mm x 150 mm x 110 mm (6.3 in x 5.9 in x 4.3 in)
• Weight: 1.26 kg (2.77 lb)
• Environment: Operating: -40 °C to +65 °C (-40 °F to +149 °F), Storage: -40 °C to +85 °C (-40 °F to +185 °F)
• Humidity: 100%
• Ingress protection: IP67 waterproof and dustproof, protected from temporary immersion to depth of 1 m
• Shock: Survive a 2-meter pole drop
• Tilt sensor: Calibration-free IMU for pole-tilt compensation. Immune to magnetic disturbances. EBubble leveling
• Front panel: 4 status LED, 1.46" OLED Display

Communication

• Integrated 4G modem: LTE (FDD): B1, B2, B3, B4, B5, B7, B8, B20; DC-HSPA+/HSPA+/HSPA/UMTS: B1, B2, B5, B8; EDGE/GPRS/GSM: 850/900/1800/1900MHz
• Wi-Fi: 802.11 b/g/n, access point mode
• Bluetooth®: v4.1
• Ports: 1 x 7-pin LEMO port (external power, RS-232), 1 x USB Type-C port (data download, firmware update), 1 x UHF antenna port (TNC female)
• UHF radio: Standard Internal Rx/Tx: 410-470 MHz, Transmit Power: 0.5 W to 2 W, Protocol: CHC, Transparent, TT450, SATEL3AS, Link rate: 9600 bps to 19200 bps, Range: 5 km under optimal conditions
• Data formats: RTCM 2.x, RTCM 3.x, CMR, CMR+, SCMRX input and output, HCN, HRC, RINEX 2.11, 3.02, NMEA 0183 output, NTRIP Client, NTRIP Caster
• Data storage: 32 GB internal memory

Electrical

• Power consumption: 5 W (depending on user settings)
• Li-ion battery capacity: 2 x 3400 mAh, 7.4 V
• Operating time on internal battery (4): UHF receive/transmit (0.5 W): 5 h to 8 h, Cellular receive only: up to 9h, Static: up to 10 h
• External power input: 9 V DC to 28 V DC

Certifications

• FCC Part 15 (class B Device), FCC Part 22, 24, 90; CE Mark; NGS Antenna Calibration; MIL STD 810G, Method 514.7

For more information, visit www.chcnav.com or contact SALES@CHCNAV.COM.

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© 2020 Shanghai Huace Navigation Technology Ltd. All rights reserved. The CHC and CHC logo are trademarks of Shanghai Huace Navigation Technology Limited. All other trademarks are the property of their respective owners. Revision March 2021.