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Oscar

For Visual Positioning

The Tersus Oscar Ultimate is a high-performance, all-purpose GNSS receiver engineered for professionals who need maximum precision and flexibility without compromise. Built around Tersus’ Extreme RTK Engine, the Oscar Ultimate keeps delivering precise RTK fixes in heavy canopy, urban interference, and remote terrain, where conventional GNSS receivers are pushed to their limits.

Designed to seamlessly adapt to your workflow, the Oscar Ultimate functions effortlessly as a rover or base station. With onboard controls, an integrated display, multiple correction options (including TAP), limitless calibration-free tilt compensation, and hot-swappable batteries, it’s a powerful field solution for surveying, GIS, construction, utilities, drone operations, and advanced positioning applications.

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Download Oscar Data Sheet

Top Features:

Multi-Constellations & Frequencies

Centimeter-Level Accuracy

Unlimited Tilt Compensation

NFC Connection

Field Value

The Oscar Ultimate is built for the realities of fieldwork. It keeps surveyors moving through dense canopy, tight urban sites, and rugged terrain without slowing down. Limitless tilt compensation eliminates tedious leveling, while hot-swappable batteries let crews work all day without interruption. On-device controls and quick setup mean less time fussing with equipment and more time collecting accurate points, so surveyors can stay productive, confident, and ahead of schedule, no matter the job site.

Office Value

The Oscar Ultimate delivers field data office teams can trust—and act on—immediately. With precise RTK and PPK outputs captured even under challenging conditions, teams spend less time correcting errors and more time analyzing, validating, and making decisions with confidence.

Precision and Flexibility That’s Built for the Job.

Any Job.

GNSS Positioning

Full-featured RTK GNSS with tilt-capable IMU sensor fusion.

Connectivity

Built-in 2-watt UHF radio, 4G LTE modem, Wi-Fi, and NFC.

Data Storage

16 GB onboard memory for RINEX data logging.

Ruggedness

IP68-rated housing for harsh field conditions; compliant with MIL-STD-810G and FIG 514.6C-1.

Power Options

Swappable batteries for uninterrupted rover operation, or external deep-cycle power for base station use.

Applications

Flexible solution for GCP collection, RTK base stations, and versatile mapping workflows.

Configuration

Web-based UI accessible from any Wi-Fi device, or local configuration via on-screen display and physical buttons.

Correction Services

Free access to Tersus Caster Service for transmitting and receiving corrections over cellular networks; supports multi-brand rovers from a single base.

NUWA Field Software

  • Background imagery and vector support.
  • Coordinate system management & Site Calibrations.
  • Versatile file type support –  import/export.
  • CSD, FXL, COD Code list support.
  • And more…
View All of NUWA's Features

Built In-House by Tersus.
Built to Perform for You.

At Tersus, building “just another RTK system” is never the goal. Tersus designs and develops its own GNSS boards and core RTK technologies, building solutions from the ground up rather than relying on generic, off-the-shelf components. It’s a simple belief that guides every receiver we’ve built: build better, or don’t build at all. Every receiver delivers high-performance, centimeter-level RTK accuracy without unnecessary cost, providing reliability and precision in even the toughest environments.