Description
Meet the CHCNAV i93, a next-gen GNSS rover that blends precision RTK with visual surveying. Dual cameras and video photogrammetry let you measure hard-to-reach points and perform immersive AR visual stakeout, speeding up layout and as-built tasks on congested job sites.
Under the hood, a 1408-channel GNSS engine with the iStar 2.0 algorithm delivers resilient tracking and high fix reliability—even around interference and obstructions. Add the 200 Hz Auto-IMU and you get instant, calibration-free tilt compensation to 60° so work continues accurately when the pole can’t be perfectly plumb.
Connectivity is built-in for any workflow: 4G LTE for network RTK, UHF for base/rover links, plus Wi-Fi, Bluetooth and NFC for quick pairing with controllers. Despite its power, the i93 runs up to 34 hours as an RTK rover and meets IP68 and MIL-STD-810H ruggedness for real-world durability.
Whether you’re staking lines on a road project, capturing offsets under eaves, or complementing 3D modeling from drone imagery, the i93 helps teams finish faster with confidence-grade results.
Specifications
| Category | Key Specs |
|---|---|
| GNSS Engine | 1408 channels, iStar 2.0; constellations: GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS, NavIC (L1/L2/L5, E1/E5/E6 where available)* |
| RTK Accuracy | H: 8 mm + 1 ppm; V: 15 mm + 1 ppm |
| Static / PPK | Static & rapid static: H 2.5 mm + 0.5 ppm, V 5 mm + 0.5 ppm; High-precision static: H 2.5 mm + 0.1 ppm, V 3.5 mm + 0.4 ppm |
| Visual Survey | Dual cameras (global shutter 2 MP + 5 MP), 75° FoV, starlight-grade (≈ 0.01 lux); video photogrammetry 2–25 Hz; typical 2–4 cm visual-survey precision (range 2–15 m) |
| IMU / Tilt | Auto-IMU 200 Hz, calibration-free; 0–60° tilt; additional horizontal tilt uncertainty typically < 8 mm + 0.7 mm/° (to 30°) |
| Positioning Rate | 1 Hz, 5 Hz, 10 Hz (per firmware availability) |
| Cellular Modem | Integrated 4G LTE (TDD/FDD), WCDMA, EDGE/GPRS/GSM |
| UHF Radio | 410–470 MHz Rx/Tx; 0.5–2 W; protocols: CHC, Transparent, TT450, Satel; 9 600–19 200 bps; typical range 3–5 km (up to 15 km optimal) |
| Wireless | Wi-Fi 802.11a/b/g/n/ac (AP mode), Bluetooth 5.0/4.2+EDR, NFC tap-to-pair |
| I/O & Formats | Ports: 7-pin LEMO (RS-232), USB-C, TNC UHF antenna; Formats: RTCM 2.x/3.x, CMR, NMEA 0183, HCN, RINEX 2.11/3.02, NTRIP client/caster |
| Storage | 32 GB internal; supports 128 GB external |
| Display / Controls | 1.1″ OLED color panel; 2 LEDs; 2 physical buttons |
| Power | Built-in Li-ion 9 900 mAh (7.2 V); external power 9–24 V DC; typical consumption: 2.8 W (RTK w/o camera), 4 W (visual modes) |
| Battery Life | RTK rover up to 34 h; visual stakeout/survey up to 24 h; UHF RTK base up to 16 h; static up to 36 h |
| Ruggedness | IP68, MIL-STD-810H, survives 2 m pole drop; waterproof breathable membrane |
| Environment | Operating –40 °C to +65 °C; Storage –40 °C to +85 °C; 100% RH non-condensing |
| Physical | 152 mm × 81 mm, 1.15 kg; magnesium alloy housing |
| PPP | Supports B2b-PPP and E6B-HAS (region-dependent) |
Advanced GNSS, IMU, and dual-camera video-photogrammetry have been combined in the i93 Visual IMU-RTK GNSS receiver to provide an exceptional user experience. On construction sites, its 3D visual stakeout and offset measurement tools increase efficiency. It is a flexible tool for any project, driven by the CHCNAV iStar algorithm, which employs multi-band GNSS channels and hybrid positioning for reliable accuracy in harsh environments.
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