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Best GPR for underground utility locating

Posted: Mon Jun 08, 2020 10:27 am
by uulow98
I searched the forum and did not see a topic like this. What's the best ground penetrating radar currently for locating underground pipes and cables? It's been while since last time I checked. I am seeing a lot of RD1500 now but I am not sure it's the best one in terms of the penetrating depth and resolution. What do you think?

Re: Best GPR for underground utility locating

Posted: Mon Jun 08, 2020 10:56 am
by nsm
RD1500 is cheap and fit certain market requirements, but it's definitely not the best GPR. There have been new models with this new fast stacking tech which is definitely better in penetration depth.

Re: Best GPR for underground utility locating

Posted: Mon Jun 08, 2020 6:09 pm
by MetalDetecting
USRadar has a Triple Frequency GPR System, very impressive. You got both good penetration and resolution.
https://usradar.com/quantum-imager-trip ... pr-system/

Re: Best GPR for underground utility locating

Posted: Tue Jun 09, 2020 6:28 pm
by geophix
I recommend Mala Easy Locator Pro Widerange HDR. This is a dual frequency system with the HDR technology. The two center frequencies are appropriate for underground utility locating. GSSI had a dual frequency system, but in my opinion they chose the wrong center frequencies. It's before HDR tech anyway.
https://www.guidelinegeo.com/product/ma ... range-hdr/
Here is a sample frequency analysis from a field test showing the frequency spectrum of the two antennas:
Spectrum_MALA Low Freq.jpg
Spectrum_MALA Low Freq.jpg (15.45 KiB) Viewed 651 times
Spectrum_MALA High Freq.jpg
Spectrum_MALA High Freq.jpg (17.75 KiB) Viewed 651 times

Re: Best GPR for underground utility locating

Posted: Wed Jun 10, 2020 9:27 pm
by uulow98
What is HDR?

Re: Best GPR for underground utility locating

Posted: Thu Jun 11, 2020 4:49 pm
by geophix
uulow98 wrote:
Wed Jun 10, 2020 9:27 pm
What is HDR?
High dynamic range. Basically it means it can have better effective penetration depth by reducing random noises through oversampling and stacking. I believe Mala, GSSI and Sensors&Software are all using the same techniques now (although they might have different names for it) for their new products, but I don't know how much they differ in the implementation of the technique.

Re: Best GPR for underground utility locating

Posted: Tue Jun 23, 2020 10:56 pm
by 99thpercentile
I have used most of the brands on the market and my current system is the Impulse Radar PinPointR. It uses real time sampling (RTS), operates at both 400 and 800 MHz, and is very compact in size. The price is very competitive at around $16K plus the tablet controller. I am using the Samsung Galaxy Tab Active to control the PinPointR, but any Android tablet can control it. The GPS integration is really good. Let me know if you have any questions. I have attached a picture with an EMLID Reach RS2 GNSS receiver.

Re: Best GPR for underground utility locating

Posted: Thu Jun 25, 2020 6:32 pm
by geophix
It looks really compact for two antennas. Great one!