DJI Phantom 4Pro RTK/ PPK UAV survey for design & construction in Switzerland

Introduction

Today we are going to continue the theme how to use UAV for design and construction and now you have chance to look at a real survey in the canton of Vaud in Switzerland.

AGRUS SA, which develops and builds wide range of Real Estate and Business Projects including Design Real Estate Projects from the initial idea to the final construction project, ask our team to make a survey in purpose to get precise and detailed 3D models of land plots and infrastructure around this area for further designing and promotion material creating.

Pic.

Pic.

All land plots of new development projects are located in the foothills in close proximity to Lake Geneva with beautiful views to mountains and lake. (Pic.1,2)

We offered advanced drone technology that allows to survey large areas of land more accurately and faster than conventional survey techniques, providing clients with 3D models, contours and digital elevation models with rapid turnaround.

Survey and Data Processing

The following equipment and software were used for surveying (Pic.3,4):

  1. Two pieces of EMLID Reach RS+ GNSS receivers.
  2. DJI PHANTOM 4PRO PPK upgraded by Topodrone SA with additionally installed GNSS receiver connected to the camera.
  3. Pix4Dmapper software for 3D modelling, RTKlib for GNSS data post-processing and TOPOSETTER APP for images geotagging.
Pic.1 Area 1 and Area 2 location

Pic.1. Area 1 and Area 2 location.

 

Pic.2 3D view of Area 1 and Area 2 location.

Pic.2. 3D view of Area 1 and Area 2 location.

On the first stage Reach RS+ was installed on the tripod on the point with known coordinates. This GNSS receiver was used as a base for measuring ground check points (GCP) in RTK mode by the second REACH RS+ and this base station were collecting raw Rinex data in static mode during flights.

Pic.3,4. DJI PHANTOM 4PRO PPK, EMLID REACH RS+ GNSS receiver

Pic.3,4. DJI PHANTOM 4PRO PPK, EMLID REACH RS+ GNSS receiver.

On the first day we surveyed two different areas located within 2 km range from each other without a direct view. For time saving for the flights over area №1we used a base station installed in area №2. All flights and field works did not take a lot of time and were accomplished within one hour.

After flights GNSS data from the drone were downloaded and post processed together with Rinex file from the base station in order to get accurate coordinates of each image location. Finally we assigned accurate coordinates to each image to EXIF by TOPOSETTER APP.

Photogrammetry processing was made by Pix4D software without using GCP.

In general there are the following easy steps in Pix4Dmapper:

  • Import images together with accurate images coordinates and GCPs
  • Run initial processing to find tie points and to optimize internal and external parameters
  • Set up calibrated external camera parameters
  • Reoptimize photos
  • Check accuracy by defining check points location (Pic.5,6). Accuracy report is represented in Tab.1
  • Run Points cloud, DTM, DSM and orthophoto creation (Pic.7-12)

At the final stage results of aerial photo triangulation was checked by measured check points.

Pic.5. Defining check points location in PIX4D.

Pic.5. Defining check points location in PIX4D.

 

Pic.6. Ground check points location

Pic.6. Ground check points location

Tab.1. Accuracy report.

Tab.1. Accuracy report.

 

Pic.7. Dense points cloud.

Pic.7. Dense points cloud.

 

Pic.8. Dense points cloud classification.

Pic.8. Dense points cloud classification.

 

Pic.9. 3D model of area 2.

Pic.9. 3D model of area 2.

 

Pic.10. 3D model of area 2.

Pic.10. 3D model of area 2.

 

Pic.11. 3D model of area 2.

Pic.11. 3D model of area 2.

 

Pic.12. 3D model of area 2.

Pic.12. 3D model of area 2.

Resume

As a result of this survey we got high-resolution and high-precise 3D model which was highly rated by ARGUS SA. They will use this model in a construction project.

Fill this form if you need detailed workflow how to make PPK and photogrammetry process of high precision data in RTKlib and Pix4D software.

Topodrone at INTERGEO 2018

We would like to share the best moments of our presentations at Emlid stand at Intergeo 2018 and you can now watch them on Emlid YouTube channel.
Thanks to Emlid team for capturing this video and arranging the fantastic event during INTERGEO 2018 in Frankfurt, it was amazing to see so many Emlid users and friends!

DJI PHANTOM 4PRO RTK-PPK and DJI MATRICE 200 RTK-PPK DRONES SURVEY FOR MINING and EXPLORATION

We are pleased to inform you that Topodrone team together with Filminera mining company successfully carried out project for UAV survey over Masbate Gold Project area located on Masbate Island Philippines

Survey was made by Topodrone upgraded DJI PHANTOM 4PRO PPK and DJI MATRICE 200 PPK drones over the following areas:

  • ROMpad area (140 000 sq.m)
  • Main Vein Pit (200 000 sq.m)
  • Main Vein Pit Wall 3D survey

Pic.1 Survey areas

For the project we use the following workflow

Drone survey workflow

 

Step.1

Different types of flights missions were designed (Pic.2, Pic. 3)

Step.2

The base station was installed on the point with known coordinates, ground check points were marked and measured  (Pic. 4,5)

Step.3

Photos were captured by DJI PHANTOM 4 PRO PPK and DJI MATRICE 200 PPK

Step. 4

After flight raw GNSS data were download from drones and the base station and post processed in RTKlib and Toposetter software in order to get precise coordinates of each photo

Step.5

Photogrammetric processing, 3D model and orthomosaic generation. The accuracy of model were checked with using ground check points (Tab.1,2).

Pic.2 Flight mission over ROMPAD area

Pic.3 Flight mission over MAIN VEIN PIT

Pic.4 Placing a base station

Pic.5 GCP location

 

Table 1. Accuracy report ROMpad

#Label X Y Z Error_(m) X_error Y_error

Z_error

GC1

29436.09 25455.36 1062.941 0.041656 -0.01529 -0.03871 0.001728

GC2

29424.71 25481.87 1062.678 0.044686 0.037046 0.021721 0.012354

GC3

29462.4 25470.99 1063.142 0.036729 0.031004 0.019692

0.00017

GC4 29474 25494.37 1063.164 0.033717 0.001213 0.011139

0.0318

GC5

29461.39 25534.23 1063.135 0.026046 -0.003 0.023188

0.011474

Base 29491.3 25240.93 1123.2 0.023857 0.000045 -0.01259

0.020267

 

Table 2. Accuracy reportе Main Vein Pit 

#Label

X Y Z Error_(m) X_error Y_error

Z_error

1

29809.288 25338.7987 1050.3999 0.038513 0.011266 0.035448 -0.009989

2

29962.4151 25340.0493 1040.1786 0.030702 -0.008612 0.018132

-0.023231

3 29814.733 25397.4027 1039.9323 0.026568 0.008551 0.02318

-0.009768

As a result precise & highly detailed 3D model, DEM and contour lines were created Pic. 6-13

Pic. 6 3D model of ROMPAD area

Pic. 7 3D model of ROMPAD area

Pic. 8 Main Vein Pit Wall

Pic. 9 Main Vein Pit Wall

Pic. 10 Main Vein Pit Wall

Pic. 11 3D TIN model of Main Vein Pit Wall

Pic. 12 Contour lines

Pic. 13 DEM

Conclusion

Designed by Topodrone solution turns consumer DJI drones to professional survey tools and provides high accurate 3D datasets which can be used for inventory tracking, precise volume calculating and site surveying.

Upgraded DJI drones by Topodrone team have the following advantages:

High-precision. Survey grade GNSS receiver integrated with 20 MP camera allows to record photos locations with centimeter level accuracy.

High-performance. Up to 3 sq.km/day of high-detailed and accurate maps and 3D models.

Stable solution for mountain areas. Post Processing Kinematic (NOT RTK) techniques allow to work without direct connection between drones and a base station that is very vital in mountains areas.

Costs saving. Doesn’t need to lay down GCPs or just minimize their number, saving countless hours and labor costs.

Easy to use and process data in Photoscan or Pix4D, etc. software and turn your images into highly detailed georeferenced 2D maps and 3D models with up to 3 cm x,y,z accuracy without need to lay ground control points.

DJI Matrice 200 RTK-PPK

DJI Matrice 200 RTK-PPK

Revolutionary Aerial survey solution with DJI Phantom 4PRO PPK provides up to 2 cm accuracy in India

Topodrone Russia and Matrix Geo Solution India are delighted to introduce the result of composite study done by Institute of Photogrammetry & Geo-Informatics (IPGI), Matrix Geo solutions along with Topodrone Russia concludes, that the upgraded DJI PHANTOM 4PRO PPK drone not only achieves an accuracy of 3-5cm RMSE consistently, but also has potential to achieve an accuracy up to 2cm RMSE, without the need of Ground Control Points.

DJI Phantom + RTK/PPK based Drone, delivers reliable ground accuracy that may be considered as a true alternative to ground control points.

Please read the following case study for more details.

STEP-1. Select Test Area

A test area has been selected, outside of No Flying zone of airports (pic.1). The area was about 110 000 sq. m. (11 hectares), covered by only one battery for every flight altitude ranging from 60/100/150 meters.

Pic.1 Area of interest

STEP-2. Set up of Check Points & Base Station

The base station REACH RS+ GNSS receiver has been installed on the point with known coordinates.

The Check Points have been placed and measured in RTK mode by second REACH RS+ (Rover) in evenly distributed manner throughout the test area to establish the check control points.

Pic.2 Base station

Pic.3 Measuring coordinates of checkpoints

Pic 4. Checkpoints location

STEP – 3 Flight Mission & Aerial Image Acquisition 

Three missions were planned at 60, 100, 150 meters’ altitude with 85% along and 70 % across overlapping, flights were performed with up to 9 m/s speed.

Pic.5 Flight planning

STEP – 4  Data Processing

After all the flights, set of raw images and raw GNSS data were downloaded from the drone and the base station.

The data was converted into Rinex format and post processed by RTKLIB application and as a result precise coordinates of images exposure were received that were further embedded to photos by TOPOSETTER application.

Datasets from different flight altitudes, i.e. 60, 100, 150 respectively were photogrammetrically processed by Photoscan software without using any Ground Control Points.

After processing, the checkpoints coordinates were imported into the Photoscan project and checked for the accuracy of each flight.

The data has also been checked into Traditional Stereo Photogrammetry workstation and the result was found well within 3-4 CM accuracy.

In all the Missions, the results were well within 3-4 CM Accuracy.

Tables for the result against the GCP’s

Table 1. Height 60m

Table 2. Height 100m

Table 3. Height 150m

Conclusion The above results from flights of different altitudes, show that the accuracies achieved are well within two pixel of GSD and hence passes the criteria of the National Standard for Spatial Data Accuracy (NSSDA).

DJI MAVIC PRO PPK — compact and professional solution for geodetic aerial photography without ground control points (GCP)

Good day to all! I want to share the results of practical application of upgraded drones by Topodrone team for high-precision UAV survey, cadastral and geological work, highly detailed 3D modeling.

For the first time modified DJI PHANTOM 4PRO RTK PPK took off to the sky in February 2018, from that moment already more than 30  survey teams all over the world use our drones in work, the geography of their flights is quite wide: Russia, Canada, Finland, Greece, Spain and even Samoa)).

The first flight in February 2018, we carried out at an altitude of 200 meters and achieved an accuracy of 13 to 20 cm without the use of ground control points (GCP). After adjusting the hardware and software, we precisely capture camera events and substantially improved accuracy, now the DJI PHANTOM 4PRO RTK PPK allows to obtain an accuracy of up to 3 cm from a height of 60 m, 5-7 cm from a height of 120-150 m and of the order of 10 — 12 cm from a height of 200 meters. As it seems to us, this is a very good result, which makes it possible to use low cost copter to solve many types of UAV survey.

We do not stop in developing and today we want to represent the most affordable  drone- DJI MAVIC PRO PPK with an additional geodetic GNSS receiver integrated with the camera 12 mp, which allows you to save the coordinates of the images with centimeter level accuracy and create high-precision and detailed three-dimensional terrain models and orthophotos. After tested flights and field works , we confidently confirm that at 80 meters altitude our solution provides the accuracy of of 6-8 cm without using GCP !!!

For testing, we selected an area with well recognized ground control points for further accuracy estimating measured by survey grade GNSS receiver . Flights at a height of 80 meters were performed with double grid routs.

Photos locations

Pic. 1 Photos locations

GCP locations

Pic. 2 GCP locations

After phogrammetric processing with using only accurate images locations captured by Reach M+ and postprocessed by RTK LIB we imported ground control points (Fig. 2) and determined their location on the images, in Table 1 you can see the accuracy report.

#Label

X/Longitude Y/Latitude Z/Altitude X_error Y_error

Z_error

GCP 1 37.454803 55.663711 191.251 -0.05813 0.063793

0.008196

GCP 7

37.454798 55.663675 191.275 -0.082014 0.044153

-0.011615

GCP 2

37.45459 55.663724 191.299 -0.041473 0.081557

-0.020007

GCP 3

37.454473 55.662803 190.81 0.014146 0.047028

0.05143

GCP 4

37.454498 55.662802 190.821 -0.034705 -0.000917

-0.111958

GCP 5

37.45513 55.662734 190.678 0.021256 0.020252

-0.085967

GCP 8

37.455183 55.662981 190.807 -0.005663 0.078512

-0.065043

GCP 6

37.455433 55.663009 190.459 -0.003536 0.065889

-0.056957

After building a dense points cloud, orthophotomocaic and a three-dimensional terrain model were created, it is possible to determine the coordinates of any object, as well as to perform the necessary calculations, for example, volume calculation.

3D model of terrain

Pic.3. 3D model of terrain

Pic.4. 3D model of terrain

Key futures and major advantages of DJI MAVIC PRO PPK by Topodrone :

  • impressively portable , when folded down, measuring only 83 x 83 x 198mm – more than compact enough to slip into a small bag;
  • long-range remote control up to 7 km;
  • battery delivering around 27 minutes of flight per charge;
  • Advanced obstacle detection system. Mavic Pro can automatically rise in front of inclined objects such as mountain slopes. In total, there are des 2 sonars and 5 simultaneously working cameras;
  • Survey grade GNSS GPS/QZSS L1, GLONASS G1, BeiDou B1, Galileo E1, SBAS receiver integrated with 12 MP camera allows to capture photos events with centimeter level accuracy and automatically process data in any photogrammetric software;
  • low cost and ease to use extends the possibilities of its application in various sectors of UAV survey.

DJI MAVIC PRO upgraded by Topodrone, having all the above advantages and technological innovations, creates a new trend in the direction of unmanned aerial vehicles for geodesy, and makes them essentially an indispensable tool that every surveyor, mine surveyor, cadastre engineer, archaeologist or geologist will carry with him soon.

Training for UAV SURVEY & MAPPING with DJI Phantom 4PRO PPK

Today we would like to share information about a training course carried out July 2018 by Topodrone team for companies TOPOGRAPHERS.GR (Greece) and FORGIS (Finland). This training was designed to provide our clients with knowledge’s and practical skills how to use DJI PHANTOM 4PRO PPK, collect, analyze and export high-quality drone mapping and modeling data.

The course took place in Finland and included the following topics :

  1. Field activity for GNSS base and drone preparation
  2. Mission planning in MapPilot or Pix4D app.
  3. GNSS Data and photogrammetry processing;

At all stages, together with our colleagues, we carried out all the necessary steps and had a lively discussion of the issues raised.

GNSS reciever Reach RS

FIELD WORKS

In the first stage we installed a Reach RS receiver on the tripod (see Figure 1).  GNSS reciever was used as a base station for flights.

We measured geographic coordinates of its location in the WGS84 coordinate system from the VRS network of the Finnish provider TRIMNET in RTK mode.

 

 

 

 

 

Then we connected the second GNSS Reach RS receiver to the base via the radio channel as a rover and measured coordinates of well-identifiable control points at aerial photos, such as road markings and pedestrian crossings.

In the second stage we prepared DJI PHANTOM 4 PRO PPK for operation (Fig.2a, Fig.2b), installed a removable GNSS antenna and turned on the power of the drone. We created a new project for aerial photography in mobile applications MapPilot and Pix4D, performed the camera settings necessary to set a fixed focal length and a correct light value.

We made flights, received a set of stereo images and downloaded the necessary GNSS measurements from the drone and the base station.

Phantom 4 Pro PPK

Fig.2a Phantom 4 Pro PPK

 

Phantom 4 Pro PPK

Fig.2b Phantom 4 Pro PPK

Data processing

Data processing in SOFTWARE AGISOFT PHOTOSCAN

Fig.3 Data processing in SOFTWARE AGISOFT PHOTOSCAN

On the second day, we jointly performed the entire process data processing with a lively discussion of technical and theoretical aspects.

In the beginning, using the Toposetter software, we replaced the navigation coordinates of the images, with high-precision data, calculated during the post-processing of GNSS data in RTKLIB software.

We created a new project in PHOTOSCAN software (see Fig.3, Fig.4) imported images, set the precalibrated value of the focal length of 8.82576 mm and 1 cm accuracy for images location.

Then photos alignment was performed, coordinates of the previously measured control points were imported to the project.

Finally we checked the quality of the block adjustment and build a digital terrain model.

Participants of the seminar were pleasantly surprised by the achieved accuracy of the digital model in 3 cm (see Table 1).

 Data processing in SOFTWARE AGISOFT PHOTOSCAN

Fig.4 Data processing in SOFTWARE AGISOFT PHOTOSCAN

 

#Label

X/Longitude Y/Latitude Z/Altitude Error_(m) X_error Y_error

Z_error

Point 2

29.745413 62.602363 97.539300 0.032160 0.031041 0.008358

-0.000943

Point 3

29.745415 62.602363 97.519643 0.034508 0.029503 -0.000398

0.017894

Point 5

29.745643 62.602864 98.252712 0.053743 0.031798 0.017201

-0.039765

Point 6

29.745645 62.602863 98.250907 0.043566 0.037336 -0.010807

-0.019678

Point 9

29.747084 62.603126 97.648058 0.055341 0.051491 0.017736

-0.009833

Point 10

29.747038 62.603135 97.650754 0.022952 0.014786 0.016383 0.006304

 

During the training our colleagues received the following practical skills:

— Mission planning in MapPilot and Pix4D App and pilots skills

— Installation of a geodetic base station, determination of ground control points coordinates

— Preparation of DJI PHANTOM 4PRO PPK for work

— Data processing (data conversion, post-processing of GNSS measurements, creation of a project for photogrammetric processing in Photoscan software, camera calibration, exporting of orthomosaic and digital terrain model)

It should be noted that during this course, the ease to use and claimed technical characteristics of the DJI PHANTOM 4 PRO PPK were confirmed and we want to pay special attention to the achieved accuracy of 3D model that was 3 cm without the use of ground control points.

We thank our colleagues for their active participation in the seminar and a huge number of interesting questions and ideas.

We hope that the acquired skills will be actively used for the implementation of projects and look forward to further cooperation in the development of affordable and high-tech unmanned systems for geodesy.

The sample data for the above project is available at

https://cloud.mail.ru/public/6n12/ktTYzemYc

DJI PHANTOM 4PRO RTK PPK FOR URBAN AREAS SURVEY

Today we would like to continue articles about experience of using the DJI PHANTOM 4PRO RTK PPK to build a high-precision three-dimensional model of urban area.

May 21-24, Topodrone specialists together with Finnish company Tasamitta Oy (www.tasamitta.fi) carried out a pilot project on aerial survey of the territory of the city of Joensuu in Finland.

Before aerial survey we measured ground control points (road marking, and other object well recognized on images) across the entire area

The measurements were carried out by a two-frequency Javad GNSS receiver from the NTRIP TRIMNET network in RTK mode.

 

 

The aerial survey itself did not take much time. It was enough one standard DJI battery to cover an area by double grid routs. Usually a modified Phantom 4PRO is able to fly 21 minutes + 20% of the energy reserve for save returning home and landing.

Pic.1

REACH RS GNSS receiver was used as the base station for flights, This equipment proved to be a reliable and easy to use tool providing sufficient accuracy for postprocessing.

After aerial photography and post-processing of GNSS measurements, the obtained coordinates of the photos centers were imported into EXIF tags using the Toposetter application. Thus, we replaced the navigation coordinates, defined by the «civil» GPS module of the drone, with high-precision ones, which subsequently greatly simplified the process of creating a project for photogrammetric data processing and building a digital terrain model.

Pic.2. toposetter

 

To process data in Photoscan or Pix4D software, it is enough to upload images to the project, set the accuracy of the coordinates of the images to 1 cm and start the automatic processing (photos alignment and dense cloud generation).

The accuracy of the model was verified by previously measured control points not participated in the alignment process (Table 1).

Pic.3

 

#Label

X/Longitude Y/Latitude Z/Altitude X_error Y_error Z_error
1 29.750268 62.594423 78.626 -0.076576 -0.051925

0.072994

2 29.751747 62.593955 78.908 -0.035505 -0.053669

0.061148

3

29.751656 62.593974 78.915 -0.032421 -0.089987 0.045332
4 29.750855 62.595417 81.68 0.062724 -0.020427

0.071645

5

29.751278 62.595409 82.11 -0.041076 -0.073572 0.040098
6 29.751299 62.595422 82.061 -0.012024 0.003381

0.061621

TOTAL RMS 0.04 0.05

0.06

 

After the automatic classification of the points cloud, a high precision & detailed digital terrain model and orthomosaic were created.

Pic.4. 3D-model

 

Pic.5. Classified points cloud. Brown color — terrain

 

Pic.6. DEM

 

Pic.5. Orthomosaic

Conclusions

The results of the project show the real possibilities of using DJI Phantom 4RPO RTK PPK upgraded by Topodrone team for UAV survey. The system provides a set of high accurate data which can be automatically turned to high-precision and detailed three-dimensional terrain model without need to lay ground control points.

With our advanced and low cost drone technology you can survey large areas of land more accurately and faster than conventional survey techniques, providing clients with contours and digital elevation models with rapid turnaround.

Our UAVs equipped with a high-precision GNSS receiver make it possible to automatically obtain 3D model of the territory with centimeter level accuracy and can provide you with much-needed details regarding the landscape and surrounding areas. This cuts down on equipment and manpower costs.

The resulting points cloud in its detail and accuracy corresponds to UAV LIDAR data. Algorithms of data classification provide recognition of terrain, trees, buildings, construction and other technological objects.

Our UAV products allows to obtain data for mapping and GIS up to scale of 1: 500  of a built-up area and have the following advantages over expensive UAV and LIDAR systems

  • Easy to use
  • No need in field work to measure GCP, save your time
  • High accuracy for low price
  • Save money by upgrading of your existing DJI Phantom 4PRO or ADV

Stay tuned about new project and products…www.eng.topodrone.ru

DJI Mavic PRO PPK RTK why not?

Topodrone for constructions

Topodrone offers wide range of mapping & survey services in the field of design and construction.

With our advanced drone technology we can survey large areas of land more accurately and faster than conventional survey techniques, providing our clients with 3D models, contours and digital elevation models with rapid turnaround.

SITE SURVEY AND MAPPING FOR DESIGN

At the first stage, we establish a network of geodetic benchmarks. This marks made on a monument having a known location and elevation determined by GNSS measurements, serving as a reference point for surveying.

At the second stage we carry out aerial photo or Lidar survey of the territory using unmanned aerial vehicles (UAV) as well as instrumental topographic survey of underground communications.

Pic.1

 

Our UAVs equipped with an integrated high-precision GNSS receiver or Lidar make it possible to automatically obtain 3D model of the territory with centimeter level accuracy and can provide you with much-needed details regarding the landscape and surrounding areas. This cuts down on equipment and manpower costs, and it offers contractors the ability to make well-informed estimates and decisions prior to accepting contracts or breaking ground.

 

Pic.2

 

A large site, such as 40 hectares, can take 2 people 1 week using traditional survey methods. This can be risky due to the need to climb all over the site. With our advanced Drones technology we can map the same area and capture the site in digital format in 3 hours: 1 hour to plan and fly, 1 hour to process, and 1 hour to review data with the customer.

As a result, we provide clients with

  • Benchmarks with known coordinates, installed on the site which can be used for further construction.
  • Accurate and detailed 3D models of the territory
  • Digital elevation models
  • Up to date topographical maps or GIS layers in scale 1: 500 – 1: 5000

MONITORING OF CONSTRACTION WORKS

During construction, our drones will fly every day to monitor the work in progress.

The processing results of aerial photography and video shooting from the drone can be compared with the finished design and each day, the exact amount of work completed is known.

When construction is finished, the actual work can be compared with the design, to make sure completion is exact. Also, we can create full documentation (2D map, 3D model) for keeping a record of the “as-built”. This is given to the owner and the government in most cases.

 

3D MODEL

Pic.3 3D MODEL

 

Digital terrain model (DTM)

Pic.4 Digital terrain model (DTM)

 

Orthophoto

Pic.5 Orthophoto

 

Topographical Map in scale 1: 500

Pic.6 Topographical Map in scale 1: 500

DJI PHANTOM 4 PRO PPK MULTISPECTRAL

 

Specifications:

  1. Ready to fly DJI Phantom 4 PRO
  2. Integrated survey grade GNSS receiver (GPS/QZSS L1, GLONASS G1, BeiDou B1, Galileo E1, SBAS)
  3. Removable GNSS antenna mount
  4. Ready to install Parrot Sequoia camera
  5. Software for GNSS data post processing
  6. Support for operations, PPK data processing and photogrammetry processing.

DJI PHANTOM 4PRO GNSS PPK MULTISPECTRAL overview:

We would like to announce a low cost survey grade system DJI PHANTOM 4PRO GNSS RTK/PPK MULTISPECTRAL.

Survey grade GNSS GPS/QZSS L1, GLONASS G1, BeiDou B1, Galileo E1, SBAS receiver built in standard DJI Phantom 4PRO body and integrated with professional 20 MP camera. It allows to record photos locations with centimeter level accuracy.

Additionally we designed foldable mount for Parrot Sequoia camera. The camera can be easily installed on the drone and powered. You don’t need to use additional power bank, etc.

During a flight multispectral camera works at the same time as DJI Phantom camera.

Now you can process multispectral data together with high resolution images in Photoscan or Pix4D, etc. software and turn your images into highly precise, georeferenced 2D multispectral maps without ground control points (GCP) for different types of agricultural applications.

You no longer have to lay down GCPs or just minimize their number, saving countless hours and labor costs.

DJI PHANTOM 4PRO GNSS RTK/PPK is a easy to use survey tool. Just prepare flight mission in UGCS, etc software, switch on the drone, perform a flight mission. GNSS receiver will store events of making photo automatically, after landing download data from a drone via WI-FI.

For more detail please read articles about our experience of using DJI PHANTOM 4PRO GNSS RTK/PPK  for topographical survey or visit our BLOG