UniStrong S20 Visual Surveying RTK Receiver
UniStrong S20 Visual Surveying RTK Receiver view 2
UniStrong

S20 Visual Surveying RTK Receiver

The S20 is a full-featured GNSS receiver integrating IMU tilt compensation, video, and surveying RTK. Equipped with a high-performance, high-precision satellite positioning OEM board, it supports full-constellation, multi-frequency GNSS signal processing.

400Hz
IMU Update Rate
2MP
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 S20

The S20 is a full-featured GNSS receiver integrating IMU tilt compensation, video, and surveying RTK. Equipped with a high-performance, high-precision satellite positioning OEM board, it supports full-constellation, multi-frequency GNSS signal processing. It features narrowband anti-jamming technology and automatic ionospheric optimization to meet surveying demands in complex environments. Combining RTK with imaging, it delivers one-step visual live-view stakeout. The newly added visual measurement function effectively extends point coordinate acquisition and expands the working range. Pre-installed with fourth-generation IMU tilt compensation technology, it allows immediate measurement without leveling, enabling effortless stakeout on the go.

S20 Visual Surveying RTK Receiver

The S20 is a full-featured GNSS receiver integrating IMU tilt compensation, video, and surveying RTK. Equipped with a high-performance, high-precision GNSS OEM board, it supports full-constellation, full-frequency GNSS signal processing. It features narrowband anti-interference technology and automatic ionospheric optimization to meet surveying demands in complex environments. Combining RTK with imagery enables real-scene stakeout in a single step. The newly added video measurement function effectively extends point coordinates and expands the operating range. Pre-installed with 4th-generation IMU tilt compensation technology, it allows measurement immediately upon leveling and enables walking stakeout.

Full-Constellation, Full-Frequency Tracking & Fast Lock

Equipped with a high-performance, high-precision GNSS SoC chip to ensure signal reception quality, it simultaneously tracks all-constellation, all-frequency signals from BeiDou, GPS, GLONASS, Galileo, and QZSS, enabling rapid acquisition, tracking, and processing of GNSS satellite signals.

Real-Scene Stakeout in One Step

The fusion algorithm of GNSS + IMU + vision significantly reduces the impact of electromagnetic interference for precise stakeout. Combining RTK with imagery visually marks the stakeout point on the screen for fast finding in a single step. Dual-AR imagery on both the data controller and receiver supports intelligent guidance throughout the entire stakeout workflow, doubling field efficiency.

Video Measurement Extends Operating Range

After the RTK collects base point coordinates, points can be effectively projected even when physical obstacles cannot be crossed, expanding the operating range. Application scenarios include: Inaccessible Locations ● Areas with poor GNSS signals, such as under eaves, building corners, and dense tree canopies; ● Enclosed target points where entry is prohibited; ● Specific areas or building interiors where UAV aerial survey angles are restricted. Time-Critical Locations ● Landslide remediation and maintenance for highways and buildings where geographic data must be delivered quickly; ● Traffic accident scenes and public safety emergencies where the scene cannot remain blocked for long and rapid measurement is required, making conventional RTK impractical; ● Rapid 3D modeling of isolated structures. Difficult-to-Reach Locations ● Points hard to access directly due to fences, low walls, guard dogs, ditches, or other hazardous obstacles; ● Road centers with heavy traffic where conventional RTK is hazardous or difficult to deploy; ● Positions difficult to reach with conventional RTK or total stations, such as points on walls, window corners, and roofs.

Featuring Stonex 4th-generation IMU tilt compensation technology, it is immune to magnetic interference and requires no leveling bubble centering. Measure immediately upon tilting to achieve walking stakeout while ensuring reliable measurement accuracy.

Specifications

Technical data

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

GNSS Performance

Tracking
BDS: B1I, B2I, B3I, B1C, B2a, B2b, BDSBAS-B1C, BDSBAS-B2a
Tracking
GPS: L1C/A, L1C, L2P(Y), L2C, L5
Tracking
GLONASS: G1, G2, G3
Tracking
Galileo: E1, E5a, E5b, E6
Tracking
QZSS: L1, L2, L5
Tracking
Supports mainstream SBAS systems including WAAS, EGNOS, GAGAN, MSAS, SDCM, BDSBAS; supports BDS PPP and Galileo HAS services, etc.
RTK Keep / Bridging
Supported

Accuracy Specifications

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

IMU Tilt Compensation

Compensation Accuracy
8mm + 0.3mm/° tilt (<2cm accuracy within 30°)
Tilt Angle
0 ~ 60°
IMU Update Rate
400Hz

Stakeout Camera

Resolution
2MP
FOV
72°

Surveying Camera

Resolution
2MP
FOV
72°
Frame Rate
30 fps

Visual Surveying

Measurement Accuracy
2 - 4 cm
Measurement Range
2 - 15 m

All-Band UHF Radio

Protocols
Supports full protocols: TrimTalk450S, TrimTalk(4800), TrimMarkIII, South(9600/19200), Satel, Satel_ADL, HI-TARGET(9600/19200), HZSZ, GEOTALK, GEOMARK, PCCFST, PCCFST_ADL, PCC-GMSK, PCC-4FSK
Frequency
410 ~ 470 MHz switchable
Channels
7+2400 (7 fixed channels + 2400 custom channels)

System Platform

Operating System
Industrial-grade Linux OS
Internal Storage
Onboard 8GB ROM
Bluetooth
Bluetooth 5.0, backward compatible with 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

Environmental Specifications

Operating Temperature
-30℃ ~ 65℃
Storage Temperature
-40℃ ~ 80℃
Ingress Protection
IP67
Drop Resistance
Withstands 2m pole drop onto hardwood floor at ambient temperature; 1.2m free fall
Humidity
100% non-condensing

Electrical Specifications

Battery
Built-in battery, 3.6V, 13.6Ah, 48.96Wh, supports PD fast charging
Operating Time
16h

Physical Specifications

Button
1 multi-function power button
LED Indicators
Satellite indicator, datalink indicator, battery indicator
Display
1.1-inch AMOLED display, 294×126 resolution
Dimensions
134mm×72mm
Weight
Approx. 897g
Material
Magnesium alloy housing
Related

Similar GNSS RTK receivers

All GNSS RTK receiversView all
Stonex S3 AR Full-Featured Visual Stakeout RTK Receiver
Stonex

S3

AR Full-Featured Visual Stakeout RTK Receiver

UniStrong S3 AR Visual Stakeout RTK Receiver
UniStrong

S3

Full-featured visual stakeout RTK receiver equipped with a high-performance, high-precision positioning OEM board that…

Tilt Angle
0° – 70°
IMU Update Rate
400 Hz
Dimensions
120 mm × 71.5 mm
UniStrong S3 Full-Featured IMU RTK Receiver
UniStrong

S3

Full-featured IMU RTK receiver equipped with a high-performance, high-precision GNSS OEM board. It provides…

RTK Bridging
Supported
Tilt Angle
0° - 70°
IMU Update Rate
400 Hz
Stonex S3 Full-Featured Pocket RTK Receiver
Stonex

S3

Full-featured IMU RTK receiver equipped with a high-performance, high-precision positioning OEM board, tracking full…

Get a quote

Get a quote for S20

Tell us how many units and where they ship. An engineer replies with price, lead time and freight within 24 hours.

  • Reply within 24 hours
  • Original units with serial numbers
  • Local coordinate system preset

Reply within 24 h · Original units · Local datum preset

We reply within 24 hours. No spam.