I was awaiting the drone survey series eagerly. I am glad to know that drones costing less than 1000 dollar along with GNSS receiver (which I think can also be available at reasonable price) produce orthorectified orthomosaic with relative and absolute accuracy. Looking forward to image processing and more next. You explain really well.
Great content, you explained it way better than my lecturer in the photogrammetry unit as part of my surveying degree. Looking forward to getting into this type of surveying as the firm I work for has done a few geotechnical assessments using LiDAR and photogrammetry.
This is great Rami, thank you! I came into drone work from photography so getting the "pretty picture" part of it to be beautiful has been very important to me lol. After 2 years of practice flying photogrammetry missions and processing the data without gcps I'm ready to actually start doing "surveying" and marketing the work. Really hoping to team up with a local surveying company. I'm not a licensed surveyor so no matter how good my work is it cannot be called a survey unless I partner with a surveyor. I'm very excited about the possibility of producing accurate measurements and contour lines on my pretty pictures 🙂
Great video! As a complete beginner, I am wondering how you were able to move around a single base station receiver to gather all the GCPs. I thought that 2 base stations are required to do that, one fixed and one as a mobile rover? Are you connecting to a local subscribed Network Connection Service to do this? I'd love to understand why a single base station receiver cannot be moved around to gather the data from the various GCPs without connection to a local Network Connection Service. Would you be able to comment, or maybe make a video to help us novices understand?
Hi Rami I'm new to surveying, your videos helped me a lot. Do you need a certificate to fly drone, if so what is the best way to have one? Greetings from Jordan
Need a little help. I work for a government agency that wants to start utilizing a drone for ground surveys. Nothing cool, don't get excited, lol. Anyways, nobody knows what is required to start and operate this type of ability. I've been told to "buy a drone" so what do I need to know to help keep our tax dollars from becoming a crumpled mess? Equipment list, training etc. Thanks in advance.
Great video, thank you. Looking forward to the Post Processing addition. Software comparison would be great as well. We would like to get a good software platform that would export DXF files for our construction projects. Much appreciated.
A few tips for the presented film: 1. Mark your elements that they do for GCP (adding numbers on the lids will make you see the GCP number in the photos, at the same time naming the GCP will be easier) 2. As far as I know, giving GCP right in the middle does not seem to affect accuracy. Have you checked how it is in practice? 3. The drone flight path selected by you is not optimal in time. The flight path should be aligned with the longer sides of the flight. This will result in fewer turns of the drone and shorten the flight time (will allow you to fly a larger area) 4. You talk in the movie about setting the capture interval to 1 second. The interval should be selected according to the possibility of taking pictures by the drone's camera. Few cameras can take pictures with a speed of 1 second. I have a question: a) Have you used any Trimble DA2 solutions? It looks like a much cheaper solution when it comes to purchasing GNSS equipment and comes out cheaper for occasional use (prepaid method $ 100 for 10h of online use) b) will you continue this series? GREAT MOVIE. MAY THERE BE MORE OF THEM. Greetings from Europe
Yea typically I'll put a survey stake next to the point with some ribbon to see it from far away with larger sites. I typically put one GCP in the middle of the site. I get that the outside ones are enough for a interpolated calculation, but having one in the middle could help shorten the distance between the exterior GCPs. You are correct about the path I took not being the most efficient. But being only a few minutes and just a quick crash course on drone mapping, I figured I'd save the tip for another video. Manual time interval flights usually are 3-4 seconds typically. I haven't used any Trimble products. I have Sokkia and Emlid, and I found the Emlid has the same results as my Sokkia, so I tend to use it more since I like the interface. Yes of course, the series will continue, make sure you subscribe so you don't miss out!
A GCP in the center of your worksite is necessary if you are not using coordinated cameras and you are using Structure in motion (Computer detects points outside of your ground control) photogrammetry, especially on large sites. It helps to identify and correct an error called doming that can occur if your lens model is incorrect. Doming is when your model is domed or dished compared to reality (i.e. the center is higher or lower than it should be). Over large sites (1km x 1km) i have had 2m on a check mark in the rough centre. Took me ages to figure it out. Establishing a good camera & lens model is key to good photogrammetry: For non coordinated photos (i.e. the drone has autonomous GNSS) I have a minimum requirement of GCPs at the external corners of my survey, one GCP at the center, one GCP at the highest point i can, one at the lowest point i can. The high and low points are to help determine my focal length (you can skip these if you are not concerned about heights). For Coordinated photos (i.e. the drone has differential GNSS -PPK or RTK) I take photos at 30 degrees from Nadir(down) and with that I only need check points to confirm my coordinate transformation (since in Australia GDA2020 has a well defined transformation from IRTF and hence WGS84). this is because the software can accurately determine focal length by comparing photos taken if opposing directions and can adjust focal length to ensure they match. If i only need an ortho image then ill just use nadir photos since it makes very little difference horizontally. You can precalibrate your lens by doing flights over a good number of coordinated GCPs but i prefer to calibrate within each job and compare it back to my baseline. Just remember over time calibration drifts much like Total stations so you do need to calibrate at regular intervals (e.g. one year). Note: the phantom 4 RTK has been pre-calibrated by DJI and its calibration parameters stored in each photos EXIF data if you want (and you dont have an exif data editor) open the file in notepad (preferably notepad++) and do a text search for something like "Focal" which will take you to the EXIF data in the photo.
Hi Great video. Is it possible to use the DJI Phantom 4 with rtk functionality to carry out survey tasks? Likewise is it also possible to use DJI mini 3 Pro for surveying? Many Thanks
Great video. We currently fly a DJI S-1000 for surveillance and security purposes. Your excellent videos have provided several very good ideas that significantly improved our data capture methods. Thank you and Good Luck always.
Thanks for the video I’m interested in learning about serving. Just a small thing though protocol is your power on the remote first so you always have positive control over the aircraft.
Great tutorial BUT... I don't understand. Did you take the GCP position by 1 GNSS receiver? So all we see in the video is the "rover" and the "base" is nearby? Or one can just use a single gnss receiver to get gps info on the gcp?? Very confused on this.... here in the video it seems like you have only 1 gnss ?
Hi Rami, I have just purchased a DJI Mavic 3 enterprise and have no idea about mapping, but I am trying to learn. Is it possible for you to send me a sequence of the entire events with the Mavic 3E so I can get the sequence correct, or just send me a list of videos you have so I can try to make a workflow that works, especially how you obtain RTK on the 3E? Thanks a lot.
Instead if using that tall ass gps pole could i just put my phone on the control point 🤔 probably not... they should though.. that would be nice.. or.. like, a diy gps module. Bc that pole bs looks expensive. $800 i bet
Hello sir,please please please reply my comment, how can i come there ? Can i work in your country ,I'm from nepal ,I'm also land surveyor ,i hendle ts,level,dgps, please please reply my comment sir!
I notice you don’t mention a base station. Do you not have to use a base station? Very new to mapping and all I’ve seen is people using a base station and a rover to set the GCPs. Great video!
@MarkItZero Unfortunately a lot of people have bought the + version and then been disappointed to find out that it doesn't run some of the applications :-( Hopefully you can return it or exchange it for the regular Phantom 4 Pro. Good luck!
Great work Rami, I hope you will put video linkage with atmospheric parameters monitoring from these UAV( especially for radiations) and further processing the data. Great Job...😀
You are a natural for explaining this stuff! So I have a question about Drones with RTK being used with a base station. If you don't have a known reference point to input in the base station and don't have access to a NTRIP server, when you are using a RTK base does it make a difference in the accuracy? Or do you have to have a known point or access to NTRIP? Thanks!
Thanks a lot for this video. Got a question for you... If a water survey drone only completes 11 out of the scheduled 24mins survey time and keeps disconnecting several times, 4 -5 times during its flight then aborts the mission before completing the entire flight as the battery was too low. It tried to return home but failed to successfully do so and ended up descending in the bushes far from Home - Does this mean that the survey data was successfully collected as we are being told? The drone used was exactly the same as the one in this video.
Since your trying to teach people the use of Drones and GCPs, you really should move your GCPs further away from anything that can block the sight of the GCP from above. Nothing like a tree canopy preventing you seeing your GCP in the photos.
I have all 4 corner survey points on a 12 acre lot but i want to mark the lot lines. Can a drone be used to fly from one pin to another whilst i walk under it so i can flag the edge lines? I have a recreational gps drone b5w drone. There are trees but not 400 feet up.
This may sound like an odd question. But I would appreciate your thoughts regardless. I have a piece of property adjacent to mine. It's basically a rectangle. An open area of perhaps 15 acres. Someone put down ground control points in a straight line along the center of the property. Parallel to the longer sides of the rectangle. Is there any reason someone would do this in order to survey the property? My wife asked him what he was doing. He said surveying. I am more inclined to believe he's monitoring the property as we've had illegal hunting going on. A line in the middle would make way more sense. But maybe I'm missing something. Thanks and regards.
Do you have or can you make a video with a drone under $ 1000 dollars that is no DJI and use Open software and apps for planning flights and do the orthomosaics?
Dear bro, you are doing very great job keep going , but if you want to be more popular try to support your videos with Arabic subtitle, wish you all the best
I was awaiting the drone survey series eagerly. I am glad to know that drones costing less than 1000 dollar along with GNSS receiver (which I think can also be available at reasonable price) produce orthorectified orthomosaic with relative and absolute accuracy. Looking forward to image processing and more next. You explain really well.
I am very happy and fortunate because I discovered your channel.
Great video+explanation+presentation! Thank you for sharing! Well done mate - NEW SUB 🙏🏻
Great content, you explained it way better than my lecturer in the photogrammetry unit as part of my surveying degree. Looking forward to getting into this type of surveying as the firm I work for has done a few geotechnical assessments using LiDAR and photogrammetry.
Waiting for part 2! Big Up man
Thanks, coming soon!
Thanks for sharing it. Enjoyed it. ^^ Take care & seeU. ^^ 늘 행복하세요. ^^
My pleasure
So interesting!
This is great Rami, thank you!
I came into drone work from photography so getting the "pretty picture" part of it to be beautiful has been very important to me lol.
After 2 years of practice flying photogrammetry missions and processing the data without gcps I'm ready to actually start doing "surveying" and marketing the work. Really hoping to team up with a local surveying company. I'm not a licensed surveyor so no matter how good my work is it cannot be called a survey unless I partner with a surveyor.
I'm very excited about the possibility of producing accurate measurements and contour lines on my pretty pictures 🙂
Very interesting topic. Thank you
Thanks for these amazing videos Rami, could you please also make videos about E-survey!?
Hi Rami, I'm curious was the RTK active on the drone during this flight as it said dnss on takeoff and not RTK. Thanks
wait I am confused, when will we use the coordinates of GCP we took? you have not used them when you planned the mission. can you explain please?
Thank you man❤
awesome vid again man!
Thank you!
great video sir. Can we take stereoscopic picture and do aerial triangulation in erdas imagine? and then use it in ArcGIS to get stereo view? Please
great work 👍
Great video! As a complete beginner, I am wondering how you were able to move around a single base station receiver to gather all the GCPs. I thought that 2 base stations are required to do that, one fixed and one as a mobile rover? Are you connecting to a local subscribed Network Connection Service to do this? I'd love to understand why a single base station receiver cannot be moved around to gather the data from the various GCPs without connection to a local Network Connection Service. Would you be able to comment, or maybe make a video to help us novices understand?
sir great video sir please for beginers basic cordinate system
What app you using to set the GCPs
Whether the Mavic Pro v2 plus will assist in the remote control mapping?
Great Video!! What capture app do you use?
Hi Rami
I'm new to surveying, your videos helped me a lot.
Do you need a certificate to fly drone, if so what is the best way to have one?
Greetings from Jordan
Yes, in the United States we have the FAA Part 107 sUAS Pilot's License.
Can you use a DJI Mini pro3 for surveying
Need a little help. I work for a government agency that wants to start utilizing a drone for ground surveys. Nothing cool, don't get excited, lol. Anyways, nobody knows what is required to start and operate this type of ability. I've been told to "buy a drone" so what do I need to know to help keep our tax dollars from becoming a crumpled mess? Equipment list, training etc. Thanks in advance.
Does Mavic Air2 has LiDAR?
stop trying to sound like a newscaster, it's just weird. Other than that, good video 😉
Great video, thank you. Looking forward to the Post Processing addition. Software comparison would be great as well. We would like to get a good software platform that would export DXF files for our construction projects. Much appreciated.
As a 1st yr surveying student in ireland this is quiet interesting
Glad you liked it. Best of luck in school!
As a senior graduating this school year in geomatics, this is amazing. Best Geomatic videos on TH-cam.
@@jcpad1797 yeah definitely
The power of TH-cams
Thank you.
A few tips for the presented film:
1. Mark your elements that they do for GCP (adding numbers on the lids will make you see the GCP number in the photos, at the same time naming the GCP will be easier)
2. As far as I know, giving GCP right in the middle does not seem to affect accuracy. Have you checked how it is in practice?
3. The drone flight path selected by you is not optimal in time. The flight path should be aligned with the longer sides of the flight. This will result in fewer turns of the drone and shorten the flight time (will allow you to fly a larger area)
4. You talk in the movie about setting the capture interval to 1 second. The interval should be selected according to the possibility of taking pictures by the drone's camera. Few cameras can take pictures with a speed of 1 second.
I have a question:
a) Have you used any Trimble DA2 solutions? It looks like a much cheaper solution when it comes to purchasing GNSS equipment and comes out cheaper for occasional use (prepaid method $ 100 for 10h of online use)
b) will you continue this series?
GREAT MOVIE. MAY THERE BE MORE OF THEM.
Greetings from Europe
Yea typically I'll put a survey stake next to the point with some ribbon to see it from far away with larger sites. I typically put one GCP in the middle of the site. I get that the outside ones are enough for a interpolated calculation, but having one in the middle could help shorten the distance between the exterior GCPs. You are correct about the path I took not being the most efficient. But being only a few minutes and just a quick crash course on drone mapping, I figured I'd save the tip for another video. Manual time interval flights usually are 3-4 seconds typically.
I haven't used any Trimble products. I have Sokkia and Emlid, and I found the Emlid has the same results as my Sokkia, so I tend to use it more since I like the interface.
Yes of course, the series will continue, make sure you subscribe so you don't miss out!
A GCP in the center of your worksite is necessary if you are not using coordinated cameras and you are using Structure in motion (Computer detects points outside of your ground control) photogrammetry, especially on large sites. It helps to identify and correct an error called doming that can occur if your lens model is incorrect. Doming is when your model is domed or dished compared to reality (i.e. the center is higher or lower than it should be). Over large sites (1km x 1km) i have had 2m on a check mark in the rough centre. Took me ages to figure it out.
Establishing a good camera & lens model is key to good photogrammetry:
For non coordinated photos (i.e. the drone has autonomous GNSS) I have a minimum requirement of GCPs at the external corners of my survey, one GCP at the center, one GCP at the highest point i can, one at the lowest point i can. The high and low points are to help determine my focal length (you can skip these if you are not concerned about heights).
For Coordinated photos (i.e. the drone has differential GNSS -PPK or RTK) I take photos at 30 degrees from Nadir(down) and with that I only need check points to confirm my coordinate transformation (since in Australia GDA2020 has a well defined transformation from IRTF and hence WGS84). this is because the software can accurately determine focal length by comparing photos taken if opposing directions and can adjust focal length to ensure they match. If i only need an ortho image then ill just use nadir photos since it makes very little difference horizontally.
You can precalibrate your lens by doing flights over a good number of coordinated GCPs but i prefer to calibrate within each job and compare it back to my baseline. Just remember over time calibration drifts much like Total stations so you do need to calibrate at regular intervals (e.g. one year).
Note: the phantom 4 RTK has been pre-calibrated by DJI and its calibration parameters stored in each photos EXIF data if you want (and you dont have an exif data editor) open the file in notepad (preferably notepad++) and do a text search for something like "Focal" which will take you to the EXIF data in the photo.
Best Geomatic videos on the TH-cams. Thank you so much
Hey! Great videos. Just wondering what app you use for LiDAR on your phone?
Hi
Great video. Is it possible to use the DJI Phantom 4 with rtk functionality to carry out survey tasks?
Likewise is it also possible to use DJI mini 3 Pro for surveying?
Many Thanks
Hi, Thanks for the video. could you please say How accurate is this method?
Great video.
We currently fly a DJI S-1000 for surveillance and security purposes. Your excellent videos have provided several very good ideas that significantly improved our data capture methods. Thank you and Good Luck always.
just ordered my phantom 4 pro.. thank you for this video, very informative :)
Thanks for the video I’m interested in learning about serving. Just a small thing though protocol is your power on the remote first so you always have positive control over the aircraft.
Here in Romania my town wasn't updated the aerial imagery since 15 october 2012! :(
Google Maps is sleeping...
Which ones are the drones under $1000 thousand dollars that make the same job, And which apps they use to do the programming flight for mapping.
Great tutorial BUT... I don't understand. Did you take the GCP position by 1 GNSS receiver? So all we see in the video is the "rover" and the "base" is nearby? Or one can just use a single gnss receiver to get gps info on the gcp??
Very confused on this.... here in the video it seems like you have only 1 gnss ?
Hi Rami, I have just purchased a DJI Mavic 3 enterprise and have no idea about mapping, but I am trying to learn. Is it possible for you to send me a sequence of the entire events with the Mavic 3E so I can get the sequence correct, or just send me a list of videos you have so I can try to make a workflow that works, especially how you obtain RTK on the 3E? Thanks a lot.
Looking forward to more vids! Hope you cover the Legalities of drone surveying, particularly in residential areas 🤔🤔
Oh there is so much more coming soon! Stay tuned!
I am very interested..I am a Survivor..I am Searching for this Drone survey JOB..
What is the difference between the GCP and the CHK point? it appears that you're doing the same thing for both types?
Instead if using that tall ass gps pole could i just put my phone on the control point 🤔 probably not... they should though.. that would be nice.. or.. like, a diy gps module. Bc that pole bs looks expensive. $800 i bet
Does that drone measure an undulating land scape and give accurate figures ?
I've heard the background music before. I'm pretty sure donut operator uses it too. Kinda wild lol
Hello sir,please please please reply my comment,
how can i come there ?
Can i work in your country ,I'm from nepal ,I'm also land surveyor ,i hendle ts,level,dgps,
please please reply my comment sir!
Hi, can anyone guide me, if i can record video while surveying simultaneously, using Drone Deploy or other software?
Interested to see the next step.
Happy that you’re using our French expression "cul de sac" to describe the location. 🙂
Hi Rami. Thank you for this excellent video. I am not sure why you need ground control points if you are not going to adjust the data...
What accuracies can you expect when adopting this technique?
How did you get a FIX with just a rover? Are you on an NTRIP network?
I notice you don’t mention a base station. Do you not have to use a base station? Very new to mapping and all I’ve seen is people using a base station and a rover to set the GCPs. Great video!
I’m interested in becoming a survey drone pilot how can I do this it’s my passion please help 🙏🏾
Great video, Rami! Keep them up.
looking forward to the next video!
Thanks, Cinderella!
Your drone is not only "DJI Phantom 4", it is "DJI Phantom 4 RTK" !
1600 vs 6000 USD. Big difference between a p4p and P4 rtk 🙂
@MarkItZero
Unfortunately a lot of people have bought the + version and then been disappointed to find out that it doesn't run some of the applications :-(
Hopefully you can return it or exchange it for the regular Phantom 4 Pro. Good luck!
What program he uses for conect the cellphone with GPS Receiver?
Do u have a License? I’ve been surveying for 5 years and I wanna buy a drone and get Into this.
Great work Rami, I hope you will put video linkage with atmospheric parameters monitoring from these UAV( especially for radiations) and further processing the data. Great Job...😀
Which DJI app you use for drone operation for mapping?
Very informative video, as always. Thank you!
رامي ترجم الفيديوهات ليستفيد منك العرب
What app are you using to input the GCPs and CHKs?
Great video!, it was the one i was looking for! did you use just one emlid rs2? or the base was not shown on the video?
Is it possible to use DJI AIR3 for this same work?
Your videos are the best!! I've been doing research on the P4R and glad to see it from this angle as well as all the info with it👍
Im interested to see what to do next with the checkpoints. Also, do you need the gcp’s with the RTK phantom?
This is the Phantom 4 RTK ... Is a little bit expensive...
stop repeating your sentances - it gives the impression you have little to say.
What are the function of the controls created earlier?
HI Dji Mavic Pro can execute drone survey ?
I was looking for this video only.. great job bro.
D-J-I not D-G-I :). Great video though!
Great video. Thanks for sharing.
Great video! I'd love to get into the profession but college level education is out of the budget and putting myself in debt seems like a bad idea.
Apprentices needed in California.
@@pbchief2 Oh? How much do they pay?
So your GNSS RTK was using what as the base? A CORS station? Or was it just averaging GNSS solutions?
This video is a demonstration of a standard single position GNSS position without RTK corrections.
I have phantom 4 pro. The government discouraged me to use my drone with their restrictions.
You are a natural for explaining this stuff!
So I have a question about Drones with RTK being used with a base station. If you don't have a known reference point to input in the base station and don't have access to a NTRIP server, when you are using a RTK base does it make a difference in the accuracy? Or do you have to have a known point or access to NTRIP? Thanks!
Thanks a lot for this video. Got a question for you... If a water survey drone only completes 11 out of the scheduled 24mins survey time and keeps disconnecting several times, 4 -5 times during its flight then aborts the mission before completing the entire flight as the battery was too low. It tried to return home but failed to successfully do so and ended up descending in the bushes far from Home - Does this mean that the survey data was successfully collected as we are being told? The drone used was exactly the same as the one in this video.
عاااااش يا هندسة ,,,محتوى رائع ومتعوب عليه ,,, أنت من فلسطين او الأردن ؟؟ , انا ضفاوي من الخليل اجمل تحية إلك
Since your trying to teach people the use of Drones and GCPs, you really should move your GCPs further away from anything that can block the sight of the GCP from above. Nothing like a tree canopy preventing you seeing your GCP in the photos.
Very informative and interesting indeed!
Glad you found it helpful
I have all 4 corner survey points on a 12 acre lot but i want to mark the lot lines. Can a drone be used to fly from one pin to another whilst i walk under it so i can flag the edge lines? I have a recreational gps drone b5w drone. There are trees but not 400 feet up.
This may sound like an odd question. But I would appreciate your thoughts regardless. I have a piece of property adjacent to mine. It's basically a rectangle. An open area of perhaps 15 acres. Someone put down ground control points in a straight line along the center of the property. Parallel to the longer sides of the rectangle. Is there any reason someone would do this in order to survey the property? My wife asked him what he was doing. He said surveying. I am more inclined to believe he's monitoring the property as we've had illegal hunting going on. A line in the middle would make way more sense. But maybe I'm missing something. Thanks and regards.
Do you have or can you make a video with a drone under $ 1000 dollars that is no DJI and use Open software and apps for planning flights and do the orthomosaics?
Dear bro, you are doing very great job keep going , but if you want to be more popular try to support your videos with Arabic subtitle, wish you all the best
Anybody got the name of the app?
Hello sir…
Am shajahan
From India
I have inspired with your videos
If you have any vacancies plzz inform me
Thanks for your efforts for all us
Man our company just got a drone which I’ll be in charge of …very helpful thanks
Good Luck
Iam using aphonixapp ,Tube and Facebook
احسنت رامي عمل جيد
brother you must put more option of payment methods in your survey shirt website such as VISA I could not buy items from Saudi Arabia!
How do you guys price jobs
Great
what app are you using ?
which drone is that?
Thanks so much
Which app are u using
Great content sir, quite informative
I’m a Surveyor from Nigeria
Thank You