REVOLUTIONISING THE SURVEYING INDUSTRY

The presence of drones in surveying projects means significant changes within the industry. Surveyors are embracing drone technology for more accuracy and efficiency in a range of projects. Photogrammetry has now become a must-have in every surveyor's toolkit.  

At DJI Ferntech, our team work closely with surveyors to help them achieve what was once out of reach. Our clients utilise drones for a range of activities, including project planning, site mapping, volume calculations, progress-tracking, inspection, and more.

DJI drones and cameras can capture detailed imagery from the air with excellent accuracy using easy-to-fly, inexpensive equipment such as the Phantom 4 RTK, more advanced craft such as the Matrice 210-RTK V2 or the Matrice 600 with custom payloads and data geolocated with the Klau Geomatics PPK system.

For more information on how we can help with your project, contact our Commercial Solutions team on 0800 787 623 or commercial@ferntech.co.nz.

 

HOW ARE NEW ZEALAND SURVEYORS UTILISING DRONE TECHNOLOGY?

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Our team have worked with surveyors and construction organisations who are using drones for a range of tasks, including:

  • Quantity surveying of earthworks AND stockpiles

  • LAnd surveying and mapping

  • Thermal mapping for bush fire management

  • Project progress tracking

  • NDVI mapping for crop management and forestry

  • Mining monitoring

 

SPATIAL CORRECTION

No matter the type of surveying, some form of spacial correction is usually required. Due the natural limitations of GPS, it is only ever accurate to 3-5m. Further correction is required to improve on this, both for internal accuracy (dimensional accuracy within the project) and external accuracy (spacial accuracy to the wider geo-space).

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Ground Control Points

Ground control points are targets throughout the project whose true location is known and that are visible to the drone. The GCPs can be as simple as a sprayed cross on the ground or a plastic checkerboard right through to more advanced systems like Propeller Aeropoints, smart ground control points with built-in solar powered GPS.

With the exception of Propeller Aeropoints, ground control points will need to be surveyed to determine their actual location. Most commonly, this will be with a GPS rover.

 
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RTK (Real Time Kinematics)

Real time kinematics allow near instant correction of GPS information. A ground based base station monitors its observed GPS position and broadcasts the difference between the observed position to its actual position. This correction is applied to the observed position of the GPS equipment (such as the drone).

The base station can either be a base station established on site (such as the DJI D-RTK base station) or a base station on a national network (such as LINZ GeoNet or Position Partners’ AllDayRTK service). Where a networked base is used, the correction is delivered by an internet connection (e.g. WiFi or 3G/4G).

Accuracy varies with distance from the base however is typically 3cm horizontally and 5cm vertically. The maximum recommended distance from a base is 30km.

RTK typically requires 1-5 GCPs for optimal accuracy.

 
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PPK (Post Processed Kinematics)

Post processed kinematics is similar to RTK however the corrections to GPS positions are calculated later from saved GPS observation logs using post processing software.

GPS observation logs are available both from the national networks or indeed from many survey base stations on the market. LINZ have this data freely available to download every 15 minutes.

 


OUR KEY PRODUCTS FOR SURVEYING

DJI Phantom 4 RTK

A standard Phantom 4 can only achieve about 5-meter accuracy for photogrammetry. With the Phantom 4 RTK, you can map out an area, building or stockpile with an incredible horizontal accuracy of up to 5 centimetres. The Phantom 4 RTK achieves this with the use of its on-board high precision RTK system, along with DJI TimeSync, which ensures accurate calibration between the camera, RTK module and RTB base station.

The Phantom 4 RTK transmitter now has a built-in 5.5" high brightness screen and replaceable batteries so you can ensure a flat transmitter doesn't delay your job. With the latest GS RTK application on board, mission planning is easier than ever before without the worries of aftermarket applications or flat iPad batteries. GS RTK now supports KMZ/KML import so that pre-planning flights can be done at the office with higher accuracy. A 4G modem allows convenient connectivity to any of New Zealand’s RTK correction networks.

It is still sporting the legendary Phantom 4 Pro 1-inch 20-megapixel CMOS sensor with global shutter. And with the latest OcuSync 2.0 HD digital image transmission technology, the connection between the drone and pilot is as reliable as possible.

But don’t just take our word for it! Read this review of the Phantom 4 RTK by Michael Cutfield, Survey Manager at Fletchers NZ.

 
 

DJI Matrice 200 series

When conditions get tough, the Matrice 200 series of craft are IP43 weather resistant and can handle much stronger wind than other craft. This means less interruption to your planned aerial operations. The Matrice 200 series payload abilities allow mounting of multiple cameras and can integrate a Klau Geomatics Post Processing Kinematics GNSS system. The PPK system means that you can achieve highly accurate maps without the requirement for ground control points saving you time and money. The Matrice is the workhorse for commercial operations. Its reliability, redundancy and ease of deployment make it perfect for our tough conditions.

The latest V2 Matrice improves on this, offering support for the latest DJI and 3rd party payloads, cm accurate RTK photo positioning, encrypted control signal, collision avoidance technology, OccuSync control and SDK support.

 
 

Propellor AeroPoints

Propeller AeroPoints are a turn-key solution allowing drone surveyors to quickly deploy accurate ground control points without the need for expensive survey equipment. Each AeroPoint contains a solar-powered GNSS receiver which operates with a single button, uploading data automatically. The uploaded data can be processed in six different ways — global accuracy is on par with a conventional GNSS rover. Internal accuracy, however, is improved over traditional methods and projects will typically be accurate to less than 10mm.

The Propeller AeroPoints platform can be utilised to offer PPK on the DJI Phantom 4 RTK, which is fantastic for surveyors working in remote sites where connectivity for RTK is limited and there are no accessible marks available. PPK also allows the Phantom 4 RTK to be operated with no ground control at all, and still maintain sub-3cm accuracy. This solution is ideal for sites where access is difficult or indeed impossible altogether, such as landslides.

Propeller AeroPoints are available now from DJI Ferntech. The Phantom 4 PPK solution is also available, either as a standalone package or as an upgrade to your existing Phantom 4 RTK. Both systems are also available for rental. For more information, or to arrange a demo, contact our Commercial Solutions team.

 
 
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KLAU PPK

Klau PPK is a synergy of hardware, software and methodology to add unprecedented accuracy and efficiency to your UAV and manned aerial mapping operations. Using Klau PPK, you don’t need to access the site to place ground control points (GCPs). Attach Klau PPK to your drone and blanket your survey with hundreds of virtual control points.

We recommend installing the PPK system on the DJI Matrice 200, a powerful aerial imaging tool perfect for surveying tasks in challenging scenarios.

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Pix4D

Pix4D is the industry standard for photogrammetry software. DJI Ferntech can offer a wide variety of plans to suit your company’s requirements.

Our Pix4D trained specialists are on hand to support you with all of your post processing requirements.

 

COMPLETE SOLUTIONS

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Starter Survey RTK with Base solution

A compact and user-friendly aerial platform which includes the DJI Phantom 4 RTK drone and DJI Base station. This solution offers a flight time of <30mins and accuracy of 3.2cm GSD at 120m.

Solution includes:

  • DJI Phantom 4 RTK drone

  • DJI Base station

  • Flight time <30min and 3.2cm GSD at 120m

Contact us at commercial@ferntech.co.nz to find out more.

 
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Starter Survey PPK Solution

An alternative option for a compact and user-friendly surveying solution which includes the DJI Phantom 4 RTK drone and Klau Geomatics PPK system instead of the DJI Base Station. This solution offers a flight time of <30mins and accuracy of 3.2cm GSD at 120m.

Solution includes:

  • DJI Phantom 4 RTK drone

  • Klau Geomatics PPK system

  • Flight time <30min and 3.2cm GSD at 120m

Contact us at commercial@ferntech.co.nz to find out more.

 
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Advanced Survey PPK Solution

A powerful and robust aerial platform which includes the DJI Matrice 200 drone, a Sony RX1R II camera and Klau Geomatics PPK system. This solution offers a flight time of <11mins on TB50 batteries or <16mins on TB55 batteries, and an accuracy of 1.6cm GSD at 120m. The package can also be used with PPP (an additional subscription is required).

Solution includes:

  • DJI Matrice 200 drone

  • Sony RX1R II camera

  • Klau Geomatics PPK system

  • Flight time <16min and 1.6cm GSD at 120m

This solution can also be packaged with the DJI Matrice 600 drone which offers a longer flight time of <19mins.

Contact us at commercial@ferntech.co.nz to find out more.

 
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Advanced Survey RTK Solution

A powerful and robust aerial platform which includes the DJI Matrice 210 RTK drone with an inbuilt RTK system, a DJI Zenmuse X7 camera and a 24mm lens. This solution offers a flight time of <26mins, and an accuracy of 2.0cm GSD at 120m.

Solution includes:

  • DJI Matrice 210 RTK drone

  • DJI Zenmuse X7 camera

  • 24mm lens

  • Flight time <26min and 2.0cm GSD at 120m

Contact us at commercial@ferntech.co.nz to find out more.

 

FREQUENTLY ASKED QUESTIONS

Do you offer a business account?

Yes, we do offer business accounts. Talk to our team today about opening your account.

I’m not very tech-savvy. Do you offer any support to help me start flying a drone?

Our team are on hand to help you make the most of your drone. Give us a call during store hours from Monday to Saturday and we will talk you through whatever you want to achieve. Keep an eye on our website <link> and Facebook <link> for upcoming training events.

What are the rules for where I can fly a drone?

Please visit www.flyyourdrone.nz or www.airshare.co.nz to find out more about where you can and cannot fly your drones.

Why buy from Ferntech?

By buying from Ferntech, you'll have the confidence that you are dealing directly with New Zealand's leading drone specialists. Our team are knowledgable drone pilots who offer expert advice, trusted support and superior specialist service. Only through us will you receive a full New Zealand warranty, phone and email support, and access to our certified Repairs Centre with DJI-qualified drone technicians. And we guarantee that we will have the best prices on the market — if not let us know and we will match any price (some conditions apply).

Born in Christchurch in 2013, we are a proud local Kiwi business.. Our team work hard to ensure that drone technology is helping individuals, businesses and organisations across New Zealand to achieve what was once out of reach.

 

GET IN TOUCH

Not sure which drone is right for your project? Our team have helped surveyors across the country embrace drone technology and we are here to help.

Give us a call on 0800 787 623, email us at commercial@ferntech.co.nz, or fill out the form below:

 
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