PHX | RTK Sensor | Sentera | Precision Ag Drones, Sensors, Software + Analytics

Sentera Announces Dual-band RTK for PHX Fixed-wing Drone

Launch customer ISight RPV Services achieves transformative results during beta tests

Sentera announces the general release of its RTK GPS precision positioning module for the PHX™ Pro fixed-wing drone. The module delivers true L1/L2, multi-constellation RTK to the PHX Pro. Sentera’s RTK solution offers survey, agriculture, and mapping customers sub-5cm and better accuracy on orthomosaics and 3D mapping and modeling products without the need for surveyed ground control points or time-consuming post-processing of the GPS data. Launch customer ISight RPV Services beta-tested the new system, validating the PHX’s ability to geo-tag image capture points with sub-5cm and better accuracy in real time, creating more accurate results, faster.

Redefining Expectations

“We are excited by the results ISight RPV Services achieved using RTK with the Double 4K Sensor on the PHX Pro. The design objectives of the solution have been achieved. L1/L2 RTK on PHX brings another level of precision data capture to an already exceptional product line,” said Todd Colten, chief aerospace engineer for Sentera. “Almost overnight, industry expectations for reliable and affordable sub-5cm level accuracy have been redefined.”

Sentera’s RTK solution dramatically simplifies high-precision workflows. By reliably and automatically stamping precise capture information into every photo as it is captured, Sentera has removed the need to lay down ground control points or perform time-consuming and manual post-processing steps to achieve RTK-level accuracy.

Precise Data. Precise Decisions.

Compared to single frequency RTK solutions, dual frequency L1/L2 RTK locks into a high-precision solution much more quickly and holds the solution more reliably. Sentera’s RTK, combined with the best-in-class Double 4K sensor and the rugged, enterprise-grade PHX Pro drone, offers a simple, affordable, high-performance solution for virtually every job site. Orthomosaic and 3D products can routinely achieve sub-5cm and better precision under typical conditions and flight profiles.

“The RTK sensor package will greatly reduce the time required in the field since we don’t have to lay down surveyed ground points anymore,” comments Nathan Leben, vice president of flight operations for ISight. “Having immediate access to high-precision photo capture makes our jobs more efficient and easier, and will ultimately provide our customers with better data more quickly. It’s truly a game-changer.”

Scalable Operation

The hot-swappable RTK module for the hand-launched PHX Pro fixed-wing drone allows users to add payloads to their fleet as business expands or other data-capture needs are required.

Colten explains, “Customers can purchase a PHX Pro platform with RTK GPS and enjoy the full benefits of the system immediately. Or, they can order a basic PHX Pro drone solution now and purchase the RTK upgrade at a later date. The system is completely scalable to support any size operation.”

Pricing and Availability

Sentera’s pricing shatters the cost barrier for industrial-grade, dual-frequency RTK-enabled image collection. A complete PHX, Double 4K, and RTK system starts at $11,999. Existing PHX Pro customers can upgrade to RTK by ordering an RTK add-on module.

The system is available for order now, with shipping beginning in April.

Learn more about the PHX Pro with RTK Double 4K Sensor Solution by contacting a dealer near you, or click here to view more detailed information.


About Sentera

Sentera is a leading supplier of integrated remote sensing, analytics, and IoT solutions to the agriculture industry. Sentera makes it easy for users to integrate in-field real-time data with many digital ag platforms. Sentera’s equipment has flown tens of millions of acres all over the world, and the company manages terabytes of new data for its customers every year.

Media contact information: Sarah Ritzen,


  • Muhammad Hamid Ch
    Posted at 23:48h, 16 April Reply

    i am working on aerial mapping with drone technology and planning to convince my department to purchase equipment, i need your price list especially drone with rtk for this purpose, Regards

  • G. Marshall
    Posted at 11:16h, 29 June Reply

    We are interested in topographical mapping and how RTK compares to LiDAR. Can you reference any detailed links.

    • Sentera
      Posted at 20:10h, 02 July Reply


      Both LiDAR and imagery can be used to generate 3D terrain models. When either LiDAR data or imagery are tagged with RTK GPS-based position metadata, the resulting product can be directly registered to absolute accuracy – a precise position in a world coordinate reference system – of a few centimeters. Often, this eliminates the need for manual re-registration or use of ground control points. This saves a lot of time, and sometimes it’s impractical to place reference markers in the scene at all. Speed and the increased affordability of RTK hardware means that RTK is quickly gaining popularity.

      You’ll find LiDAR more effective at building models where portions of the scene or object are partially blocked. But LiDAR equipment is dramatically more expensive than photogrammetric (imagery)-based 3D modeling, and the sensors are generally more fragile than imaging sensors. This will change over the next few years as solid-state LiDAR equipment moves to the mainstream to support autonomous vehicles and low-cost mapping markets, but today the sensors and inertial units that are required can add many thousands of dollars to the cost of a system. There isn’t an inherent difference in accuracy in one approach versus the other if the subject to be modeled is appropriate for both techniques.

      This link has a good and balanced discussion of the two techniques:

      Hopefully this is helpful to you. Let us know if you have additional questions.

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