The construction and software files contain the complete information for building the project.
Ground Penetrating Radar using Arduino
To make the experience fit your profile, pick a username and tell us what interests you.
We found and based on your interests.
The construction and software files contain the complete information for building the project.
Software_v6.zipArduino and PC (in LabVIEW 2013) software source codex-zip-compressed - 80.47 kB - 05/18/2024 at 19:11 |
|
|
Operation_Instructions.txtOperation instructionsplain - 2.09 kB - 05/11/2024 at 10:26 |
|
|
Antennas_v2.zipAntennas - New version of antennas, must be printed on double-sided PCB FR4 laminate size A4 (210 x 297 mm). PDF for Toner Transfer construction (Top layer mirrored) and GERBER filesx-zip-compressed - 70.87 kB - 05/15/2024 at 11:54 |
|
|
PCB_Construction_Toner-Transfer.zipPCB images in PDF for Toner Transfer PCB construction (Top layer mirrored), and schematicsx-zip-compressed - 1.46 MB - 05/21/2024 at 17:41 |
|
|
LF(GPR_LF) board.zipOrCAD 9.2 design files and Gerber for Low Frequency boardx-zip-compressed - 113.47 kB - 05/21/2024 at 17:42 |
|
System tested on a bridge. This is the GPR image obtained for the bridge in the photo:
System tested and works fine.
Antenna coupling is quite high. Would be nice placing the antennas at a bigger distance from each other, or using more directive antennas in order to reduce unwanted coupling.
This is how the electronic boards are stacked.
Create an account to leave a comment. Already have an account? Log In.
Thank you for the useful information. I'll increase the horizontal sampling rate.
Another note on horizontal sampling: currently it is tied to the wheel diameter. I would be nice for inspired designs if the source code had horizontal sampling interval as a configurable parameter. It might already be (I haven't looked at the source).
Hi, great project! Could you please include schematics for the RF board in PDF format? Similar to the "GPR_JF_Schematic.pdf" in the "LF (GPR_JF) board.zip" file. I tried to open schematics with OrCAD (downloaded trial version 17.4 from the OrCAD website), but it was not very successful. It can import and open *.max files (with some errors) but I don't know how to open/convert schematics. So PDF file with the schematics would be very convenient (for those who are not familiar with OrCAD).
Also, I think, it would be handy to have layout files in PDF too for the LF and RF boards. If it's not a problem.
Hello! Thanks for the appreciation. I used OrCAD 9.2, so you should try installing this version. I provided Gerber files for creating the PCBs without the need for OrCAD. GPR_JF.bot, GPR_RF.bot and GPR_RF.top are the Gerber files for copper layers.
I will upload them also in PDF format for easy Toner Transfer PCB creation (top layer will be mirrored).
Great! It seems like KiCad and EasyEDA gerber viewers can open *.ast, *.drd, *.gnd, *.pwr, *.smb, *.smt, and *.sst files (apart from *.bot and *.top ones).
Edit: ah, they are listed in the *.gtd file as 9 layers.
Edit 2: I was able to open *.dsn file (LF board) in the 17.4 version (it shows schematic etc.). But I can't find *.dsn file for the RF board.
I added them. I created the RF board directly in Layout as PCB, without a schematic, because OrCAD lacks Minicircuit ICs. Now I added a schematic for RF created in Paint.
Thanks Mirel. Also would it be possible to upload some better photos of your existing antennas? Especially where the TX and RX feeds are connected.
will you be sharing details of the RF components & the Arduino code - this has many potential applications for good.
what is the legality of this as a spread spectrum emission. Usually you would need a license
I would love to know more about the whole endeavor when you are ready
Looks awesome! I am just wondering...aren't the antennas too low? Well, I cannot really make out the geometry and dimensions. On the hand-drawn diagram they look rather large and to me it seems that the radar hits the ground while still in the near-field region. or maybe it's just that I calculated the far-field distance in my head...
Thank you for the Like. You are right, the antennas are 4 cm above the ground, so the ground is definitely in the near-field region. Because the operating frequency range is quite low, the near-field extends far away from the antennas. Do you think it is necessary to mount the system on a trolley in order to move the ground in the far-field region? Is this going to improve the characteristics of the system?
Become a member to follow this project and never miss any updates
Standoff is probably about right. These guys pretty much dominate the market:
https://www.geophysical.com/antennas
Your horizontal sampling on the bridge is much too coarse. You should be sampling at intervals of a few cm. Bury a piece of steel pipe in sand at a depth of a foot or two, place a board over it so you can roll smoothly across it. Halve the horizontal sample rate until you get a nice looking hyperbola.
For processing the data to suppress noise and form an image I recommend Seismic Unix.
https://github.com/JohnWStockwellJr/SeisUnix
while developed for reflection seismic work it is widely used in GPR research also. I'm a retired seismic research scientist and supported SU professionally for many years. Send me a PM if you want more info.