UniStrong

G20 Visual Surveying GNSS Receiver

400 Hz
IMU Update Rate: 2 MP
Resolution: 2–4 cm
Measurement Accuracy

Original UniStrong unit·Authorized distributor

Dispatch in 3 to 7 working daysShips in 3–7 days · DDP / CIF / FOB
DDP / CIF / FOB to most countries
Local coordinate system preset before shipping

Overview

About the G20

The G20 is a fully featured GNSS receiver integrating IMU, video, and surveying RTK. Equipped with a high-performance, high-precision satellite positioning OEM board, it supports full-constellation and full-frequency GNSS signal processing. It features narrowband anti-interference technology and automatic ionospheric mitigation to meet surveying demands in challenging environments. Combining RTK with imagery, it enables one-step visual real-scene stakeout. The newly added visual measurement feature effectively extends coordinate positioning and broadens operational reach. Pre-installed with fourth-generation IMU tilt compensation technology, it allows immediate measurement without leveling, enabling continuous stakeout on the go.

Specifications

The G20 is a full-featured GNSS receiver integrating IMU tilt compensation, video, and surveying RTK. Equipped with a high-performance, high-precision GNSS positioning OEM board, it supports all-constellation, all-frequency GNSS signal processing. It features narrowband anti-interference technology and automatic ionospheric optimization to meet surveying demands in complex environments. Combining RTK with imaging enables real-scene stakeout in one step. The newly added video measurement function effectively extends point coordinates and expands the operational range. Pre-installed with 4th-generation IMU tilt compensation technology, it measures as soon as the pole is lifted, enabling walking stakeout.

Stable Signal

: Supports narrowband anti-interference technology with automatic ionospheric optimization, actively detecting and effectively suppressing internal and external interference signals. Three Years of Free Cellular Data: Comes with an IoT SIM card for instant surveying upon boot-up with three years of free cellular data. Worry-Free Battery Life: Built-in dual smart lithium batteries meet the requirements of 16 hours of daily operations. The Type-C port supports PD fast charging and power bank power supply for uninterrupted work. One-Click Fixed: One-click configuration for nationwide CORS differential services achieves a fixed solution upon power-up, supporting direct surveying in CGCS2000 and various other coordinate systems. Industrial-Grade Protection: IP67-rated protection provides comprehensive protection even under prolonged water immersion. Dual Data Backup: Survey data supports dual backup to both the data controller and receiver, ensuring double data security.

All-Constellation All-Frequency ・ Fast Locking

Equipped with a high-performance, high-precision GNSS SoC OEM board, ensuring signal reception quality while supporting all-constellation, all-frequency GNSS satellite signals including BeiDou, GPS, GLONASS, Galileo, and QZSS, enabling rapid acquisition, tracking, and processing of GNSS satellite signals.

Video Measurement ・ Expanded Operational Range

After RTK collects base point information, even when impassable obstacles exist, point coordinates can be effectively extended to expand the operational range. Application scenarios are as follows:

Real-Scene Stakeout ・ In One Step

GNSS + IMU + visual fusion algorithms significantly mitigate the impact of electromagnetic interference, delivering precise stakeout. RTK combined with imagery marks stakeout points directly on the real-world view for quick point locating in one step. Dual AR imagery on both the data controller and the receiver provides intelligent guidance throughout the entire stakeout process, doubling operational efficiency.

Specifications

Technical data

Values from the UniStrong datasheet. Ask us for the full sheet or a side by side with another model.

Tracking Characteristics

GPS: L1 C/A, L1C, L2P (Y), L2C, L5
GLONASS: G1, G2, G3
BDS: B1I, B2I, B3I, B1C, B2a, B2b
Galileo: E1, E5a, E5b, E6
QZSS: L1, L2, L5
Survey Resume after Power Off: Supported

Accuracy Specifications

Static Horizontal Accuracy: Horizontal: ±(2.5+0.5×10^-6 D) mm
Static Vertical Accuracy: Vertical: ±(5+0.5×10^-6 D) mm
RTK Horizontal Accuracy: Horizontal: ±(8+1×10^-6 D) mm
RTK Vertical Accuracy: Vertical: ±(15+1×10^-6 D) mm

IMU Tilt Compensation

Compensation Accuracy: 8 mm + 0.3 mm/° tilt (<2.5 cm accuracy within 30°)
Tilt Angle: 0°–60°
IMU Update Rate: 400 Hz

Stakeout Camera

Resolution: 2 MP
FOV: 72°

Surveying Camera

Resolution: 2 MP
FOV: 72°
Frame Rate: 30 fps

Photogrammetry Accuracy

Measurement Accuracy: 2–4 cm
Operating Distance: 2–15 m

System Platform

Operating System: Industrial-grade Linux OS
Internal Storage: Onboard 8 GB storage
Bluetooth: Bluetooth 5.0 EDR backward compatible, BLE
Wi-Fi: 802.11 a/ac/b/g/n

Data Interfaces

TNC Interface: Connects to internal UHF radio antenna
Type-C: For direct charging and data transmission
SIM Card Slot: SIM card slot

Internal UHF Radio

Protocols: Supports full protocols: TrimTalk 450S, TrimTalk(4800), TrimMark III, South (9600, 19200), PCC-GMSK, PCC-4FSK, Satel, Satel_ADL, HITARGET(9600), HITARGET(19200), HZSZ, GEOTALK, GEOMARK, PCCFST, PCCFST_ADL
Frequency: 410–470 MHz switchable
Channels: 7+2400 (7 fixed channels + 2400 custom channels)

Environmental Specifications

Operating Temperature: -30°C to +65°C
Storage Temperature: -40°C to +80°C
Ingress Protection: IP67
Drop Resistance: Withstands 2 m pole drop onto hardwood floor at ambient temperature, 1.2 m free drop
Humidity: Resistant to 99.9% condensation

Physical & Electrical Specifications

Dimensions: Φ134 mm * 72 mm
Battery Capacity: Built-in battery, 3.6 V, 13.6 Ah, 48.96 Wh, supports PD fast charging
Buttons: 1 multi-function power button
Weight: Approx. 897 g
Indicators: Satellite indicator, data link indicator, battery indicator

Physical and Power Specifications

Display: 1.1-inch AMOLED display, 294×126 resolution
Material: Magnesium alloy housing

Hardware Specifications

Processor: Octa-core 2.0 GHz
RAM: 3 GB LPDDR4X
Storage: 32 GB on-board storage, supports TF card expansion (up to 512 GB)
Display: 5.0-inch HD touchscreen
Battery: Built-in 3.85 V 6400 mAh lithium battery, operating time > 15 hours
Keypad: Alphanumeric multi-function physical keypad

Environmental Specifications

Ingress Protection: IP67
Temperature: Operating temperature: -30℃ to +60℃; Storage temperature: -40℃ to +80℃
Drop: Withstands 2 m pole drop

Data Communications

Wi-Fi: 2.4G/5G, 802.11 ac/a/b/g/n wireless LAN
Bluetooth: BT2.1+EDR / 3.0 / 4.1LE / 4.2 / 5.0 BLE
Cellular Network: 2G: GSM/GPRS/EDGE/CDMA95; 3G: TD-SCDMA/WCDMA/EVDO; 4G: TDD-LTE/FDD-LTE, full Netcom