Geovigo | Loki
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PPK – bezpośrednie pozycjonowanie dla dronów

Co to jest Loki?

Loki to globalny system nawigacji satelitarnej trzeciej generacji wykonany przez firmę GeoCue. W przeciwieństwie do innych dostępnych obecnie na rynku systemów bezpośredniej nawigacji, Loki działa na zasadzie „plug and play” i umożliwia wykorzystanie sprzętu w takich bezzałogowych statkach powietrznych jak DJI Inspire 2, DJI M200 i DJI M600 i wielu innych. System Loki zamienia drony w profesjonalne platformy do kartowania o wysokiej dokładności. Loki obsługuje również inne UAV wyposażone w aparaty cyfrowe Sony, Nikon i inne.

What is Direct Geopositioning?

Direct Geopositioning is a technique in which high accuracy positioning equipment is flown on a drone to determine camera position estimates for the downstream processing software (Metashape, DroneDeploy, etc.) that creates point clouds and ortho images. Direct geopositioning dramatically improves the horizontal and vertical accuracy of drone mapping projects, regardless of the project control strategy.


Direct geopositioning has a very rapid return on investment due to the hours of site labor that will be saved by reducing (or eliminating) the ground survey necessary to place control points. Direct geopositioning also can enable drone surveys where they were previously not possible due to the inaccessibility of areas for control placement (mine pits, islands, etc.). In short, everyone who does routine drone mapping will save money and improve results by using a direct geopositioning system.


GNSS Engine

We have teamed with Septentrio N. V. of Belgium to incorporate their state-of-the-art AsteRx-m2 multifrequency, multi-constellation differential carrier phase GNSS engine into Loki. The AsteRx-m2 is the most advanced small unmanned aerial systems GNSS receiver on the market today. Some of the more salient specifications include:

  • GPS L1, L2, L5 (enabled)
  • GLONASS L1, L2, L3 (enabled)
  • Support for Galileo, BeiDou, IRNSS, QZSS (optional)
  • 448 Hardware Channels
  • IONO+ advanced ionospheric correction
  • APME+ multi-path mitigation

GeoCue has implemented the AsteRx-m2 using third generation GeoCue computational systems in a Post-Process Kinematic configuration. With a whopping 448 hardware channels and GPS/GLONASS enabled, Loki will track every satellite in the sky!

Surround Technology

While the GNSS Engine is the heart of a direct geopositioning system, a lot of supporting electronics must be designed to realize an integrated, functioning solution. We have updated our second generation Airborne Sensor Processing (ASP-2) with the new AsteRx-m2 GNSS engine and completely reworked our system board, camera event detection subsystem (we have a patent pending on this area of technology) and antenna interfaces. We have also made the system self-contained by adding a battery power subsystem. Finally, the entire system has been put on a pretty severe weight diet, enabling it to be easily carried by small drones such as the Inspire 2.


The network (“absolute”) accuracy that you can obtain with an aerial mapping system using PPK GNSS depends on a large number of factors such as the accuracy of the reference system, the camera calibration and so forth. That said, results can be quite good for typical site mapping. In tests, Loki on an Inspire 2 with a calibrated X4S camera resulted in a planimetric ASPRS accuracy class of 4.0 cm and a vertical accuracy class of 6.5 cm – good enough for nearly any high accuracy mapping task!

What’s in the Box


The Loki system contains all of the hardware and software needed to implement direct geopositioning on a DJI Inspire 2 or a drone carrying a digital camera with a flash hot shoe such as Sony, Nikon, etc. You will need a GNSS base station for reference (not included). The kit includes:

  • The Loki System Controller (including the Septentrio AsteRx-m2 GNSS Engine)
  • L1/L2 GPS/GLONASS active GNSS antenna
  • A personality cable (Select DJI or DSLR, depending on your camera)
  • Controller to antenna cable
  • Charging/Data cable
  • Mounting kit (system is easily mounted to bespoke drones)
  • ASPSuite, Advanced Edition – 1 Roaming license

The ASPSuite (Advanced Edition) includes all software needed to import support files, process the Loki observations in PPK mode and update image headers with the refined position information (an optional CSV file can also be output). We recommend LP360 (not included in the Loki kit) for debiasing point cloud data and performing horizontal/vertical accuracy assessments.

Frequently Asked Questions

What is Loki?

Loki is a Global Navigation Satellite System (GNSS) Post-Process Kinematic (PPK) direct geopositioning hardware & software solution for low cost DJI drones as well as custom drones using digital single lens reflex (DSLR) cameras such as Nikon, Canon, Sony, etc. It is aimed at the high accuracy drone mapping community.

Why should I use Loki?

Loki will greatly improve the accuracy of drone mapping projects. It allows a reduction in the number of ground control points needed to achieve a specified horizontal and vertical accuracy level. It can provide a reference to the geodetic network in circumstances where no ground control is possible.

What is the Loki warranty?

The Loki Controller includes a one year return to factory warranty. This warranty does not cover damage to components caused by a crash or environmental damage (e.g. submersion, exposure to saturating rain, etc.) nor does it cover cables (including the personality cable). All firmware upgrades as well as mandatory board upgrades are covered by the warranty. Upgrades to new hardware versions are not included (although we do generally offer a discounted upgrade path for current system users).

How do I get updates to the Post Processing software?

ASPSuite Advanced (the Loki post-processing software) is bundled with the Loki kit and includes 1 year of software updates. Each time you start ASPSuite, it automatically checks for updates. After the one year anniversary, you can purchase an extended service contract for Loki or a software update contract for the software only.

What is the cost of the post warranty support?

A full Loki support contract (the first year is included with the original Loki purchase) is US $1,200 per year. This covers the Loki Controller (including the internal battery), the antenna and the ASPSuite software. Cables (including the personality cable) are not covered. The warranty and post-warranty support plan do not cover damage due to crashes or environmental damage such as rain, dust or submersion.

What is the cost of a software support contract for ASPSuite?

The original Loki purchase includes all ASPSuite software updates for the first year. After that time, all updates are included if you purchase the Loki system extended warranty (US $1,200 per year). If you wish to cover the ASPSuite (Advanced Edition) software only, the annual maintenance fee is US $399.

What drones are compatible with Loki?
  • DJI M200/210
  • DJI M600
  • Please contact us for inquiries about custom drones.