RTK receiver

GNSSfor construction sitefor surveying

Introduction
Mercury Laser RTK is a pole-free RTK laser surveying instrument integrating GNSS, long-range laser and HD imaging to enable precise measurements without a survey pole or external controller. Powered by the K9 chip and advanced IMU algorithms, it supports real-time laser point visualization and handheld operation for efficient field workflows.

Key Features

• Laser range up to 50 m with (3–5) mm + 1 ppm accuracy
• Auto-IMU tilt compensation up to 120° (tilt survey accuracy up to 2.5 cm)
• 1590 GNSS channels with multi-constellation, multi-frequency support and PPP capability
• Integrated long-focus camera (1600×1300) with 47° FOV and video at 30 fps
• Ergonomic handheld design with 1.6" color touchscreen and one-tap measurement
• IP68-rated, survives 1.5 m drop; operating range −40 °C to +65 °C
• Long autonomy: 7.2 V, 5000 mAh Li-ion battery (~15 h)

Performance

• Channels: 1590; constellations: GPS, BDS, GLONASS, Galileo, QZSS, IRNSS, SBAS, PPP, L‑Band
• Signal reacquisition ≤1 s; Cold start ≤30 s; Hot start ≤10 s
• RTK initialization <5 s (baseline ≤10 km); initialization reliability ≥99.9%
• Data update rates: 1/2/5/10/20 Hz
• Static: H 2.5 mm + 0.5 ppm RMS; V 5 mm + 0.5 ppm RMS
• Single baseline RTK: H 8 mm + 1 ppm RMS; V 15 mm + 1 ppm RMS
• DGPS ~0.4 m RMS; SBAS H 0.5 m RMS; Standalone 1.5 m 3D RMS
• Laser tilt measurement ≤3.5 cm (5 m range, ≤60° tilt in laser mode)

Physical

• Housing: aluminium‑magnesium alloy; dimensions: Φ 8.1 cm × 7.6 cm × 17.1 cm
• Weight: 500 g ±50 g (with internal battery)
• Device display: 1.1" OLED; Interface touchscreen: 1.6" color
• Operating temperature: −40 °C to +65 °C; storage: −40 °C to +85 °C; humidity: 100% non‑condensing
• Ingress protection: IP68; shock: survives 1.5 m drop to concrete
• Battery & power: 7.2 V, 5000 mAh; power consumption 1.8 W; working time ~15 h
• Memory: 4 GB; interface: USB Type‑C

Communications

• Virtual serial port up to 921600 bps; Wi‑Fi 802.11 a/b/g/n (5 GHz)
• Bluetooth 4.0 (Windows/Android compatible); optional 4G module (B1/B3/B5/B7/B8/B20/B28)
• Correction I/O: RTCM 2.X/3.X, CMR/CMR+ (GPS only)
• Position output: NMEA‑0183 and ComNav binary up to 20 Hz; output rates 1–20 Hz

Laser

• Range: 50 m; safety class: 3R
• Accuracy (room temperature): (3–5) mm + 1 ppm
• Measuring frequency: default 3 Hz, max 5 Hz

Camera

• Resolution: 1600 × 1300; FOV: 47°; video: 30 fps
• Image group capture: typically 2 Hz, up to 25 Hz; max capture time ~60 s (≈60 MB)

Technical specifications

• Model: Mercury Laser RTK
• GNSS channels: 1590; multi‑constellation & multi‑frequency support
• Auto‑IMU tilt support up to 120°; RTK init <5 s
• Laser: 50 m, class 3R, (3–5) mm + 1 ppm
• Camera: 1600×1300, FOV 47°, 30 fps
• Battery: Li‑ion 5000 mAh, 7.2 V; autonomy ~15 h
• Ruggedness: IP68; drop 1.5 m
• Connectivity: USB‑C, Wi‑Fi 5 GHz, Bluetooth 4.0, optional 4G