The Emlid Reach RS4 Pro is an all-band RTK GNSS receiver with dual Full HD cameras, tilt compensation, and visual surveying tools for high-precision field data collection. The receiver provides 672 GNSS channels with GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC support. RTK accuracy is specified at 7 mm + 1 ppm horizontally and 14 mm + 1 ppm vertically, while tilt compensation provides RTK + 2 mm + 0.3 mm/° performance. Dual cameras support augmented reality stakeout and measurements from images, providing additional options for collecting and locating survey points.
The Reach RS4 Pro is designed for surveying, construction, utilities, roadwork, and other applications requiring centimeter-level positioning and visual guidance. Photo-based measurements allow surveyors to capture hard-to-reach points on building facades, behind fences, and across busy roads, while AR stakeout overlays points and lines within the camera view for field layout. The receiver also supports NTRIP, LoRa, and two-way UHF correction options and operates for up to 16 hours as an RTK rover with tilt compensation.
| |
Dual Camera
The Reach RS4 Pro incorporates two Full HD cameras for visual stakeout and measurements from images. The front camera has a 64.6° horizontal and 42.8° vertical field of view, while the bottom camera has a 63° horizontal and 42° vertical field of view. Both use 1/2.6-inch CMOS global-shutter image sensors and support a 25 fps video frame rate.
|
|
AR Stakeout
The Reach RS4 Pro supports augmented reality stakeout, displaying survey points and lines over the camera view to provide visual guidance during field layout. As the operator approaches a target, the front camera provides guidance toward the point, while the system switches to the bottom camera at close range to show the ground beneath the receiver.
Measurements From Images
The Reach RS4 Pro uses its integrated cameras to support measurements from images when the survey pole cannot be placed directly on the target point. Emlid identifies building facades, areas behind fences, and points across busy roads as examples of locations where image-based measurement can be used.
All-Band GNSS
The Reach RS4 Pro provides 672 GNSS channels and all-band satellite tracking. Supported signals include GPS L1C/A, L2C, and L5; GLONASS L1OF and L2OF; Galileo E1-B/C, E5a, and E6; BeiDou B1I, B1C, B2a, and B3I; QZSS L1C/A, L1C/B11, L2C, and L5; and NavIC L1-SPS Data and L5-SPS. GNSS update rates are supported up to 10 Hz.
Tilt Compensation
The Reach RS4 Pro provides tilt compensation with specified performance of RTK + 2 mm + 0.3 mm/°. Emlid's next-generation tilt system uses factory calibration and initializes with several movements of the survey pole without requiring manual recalibration during normal operation.
Base and Rover Connectivity
The Reach RS4 Pro supports RTK corrections through NTRIP, LoRa, and UHF connections. The integrated 868/915 MHz LoRa radio provides up to an 8 km range under Emlid's listed specifications. The two-way UHF radio operates from 410 to 470 MHz with up to 2 W output and TRIMTALK 450S support, subject to regional frequency and power regulations.
Emlid Flow
The Reach RS4 Pro works with the Emlid Flow mobile app for receiver configuration and field surveying workflows. Emlid Flow supports connection to RTK correction sources and provides the software environment for RS4 Pro features including stakeout and field data collection.
Key Features:
- Dual Full HD cameras for AR stakeout and measurements from images
- All-band GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC support
- 672 GNSS tracking channels
- RTK accuracy of 7 mm + 1 ppm horizontal and 14 mm + 1 ppm vertical
- Tilt compensation performance of RTK + 2 mm + 0.3 mm/°
- Augmented reality stakeout with visual point and line guidance
- Photo-based measurements for hard-to-reach survey points
- 868/915 MHz LoRa radio for transmitting and receiving RTK corrections
- Two-way 410 to 470 MHz UHF radio with TRIMTALK 450S support
- NTRIP and RTCM3 correction support
- Global LTE modem with Nano-SIM support
- Wi-Fi and Bluetooth 5.1 connectivity
- Up to 16 hours of operation as an RTK rover with tilt compensation
- 16 GB internal storage
- Magnesium alloy body with IP68 ingress protection
- -40°C to +65°C operating temperature
- Quick-release mount support for survey pole attachment
.png)
