Search found 100 matches

by topgpr
Sun Jun 14, 2020 9:25 pm
Forum: Near Surface Geophysics
Topic: Complete ancient Roman city mapped using ground-penetrating radar
Replies: 2
Views: 321

Re: Complete ancient Roman city mapped using ground-penetrating radar

Does anyone recognize the GPR system? Sensors&Soft?
by topgpr
Mon May 25, 2020 7:13 am
Forum: Near Surface Geophysics
Topic: Guess what's in the GPR profile
Replies: 9
Views: 601

Re: Guess what's in the GPR profile

I agree with ADobrovolskiy, the long hyperbola does not look like coming from underground. The other one might be a man-made structure?
by topgpr
Tue May 19, 2020 12:20 pm
Forum: Near Surface Geophysics
Topic: GPR for underground void locating
Replies: 5
Views: 489

Re: GPR for underground void locating

Thanks, guys. Wonderful data example, geophix!
by topgpr
Sat May 16, 2020 2:44 pm
Forum: Near Surface Geophysics
Topic: GPR for underground void locating
Replies: 5
Views: 489

GPR for underground void locating

Underground void locating with GPR is not always easy. Sometimes it's just hard to tell whether you are looking at a void or not in the GPR profile. In the following example,between 5' to 9' marks, there is apparently a void since it's so close to the ground surface. But it's harder to determine whe...
by topgpr
Sat Nov 02, 2019 9:31 pm
Forum: Near Surface Geophysics
Topic: Mala GPR Easy Locator HDR
Replies: 0
Views: 5574

Mala GPR Easy Locator HDR

Has anyone used this GPR before? It's center frequency is 450MHz. High dynamic range helps its penetration depth, but how is its penetration depth compared to a regular 250MHz antenna?
by topgpr
Mon May 20, 2019 5:04 pm
Forum: Near Surface Geophysics
Topic: GPR data with aircraft buried in the ice in Greenland
Replies: 7
Views: 1561

Re: GPR data with aircraft buried in the ice in Greenland

Thanks, ADobrovolskiy. I never viewed ariborne GPR data before. Is the ground surface flat?
by topgpr
Sun May 19, 2019 8:12 am
Forum: Near Surface Geophysics
Topic: GPR data with aircraft buried in the ice in Greenland
Replies: 7
Views: 1561

Re: GPR data with aircraft buried in the ice in Greenland

Anyone has an GPR image to show? It would be very interesting to see what it look like in the GPR data.
by topgpr
Fri Feb 13, 2015 1:13 pm
Forum: Near Surface Geophysics
Topic: GPR legal requirements
Replies: 0
Views: 597

GPR legal requirements

Is this real, or it's just a bogus claim? It implies other GPR manufactures other than "US Radar" are not compliant with the law: http://www.worksmartinc.net/gpr-requirements.php Here is the quote from the webpage: " Just because a company has been manufacturing, designing, selling, or leasing radar...
by topgpr
Sun Mar 30, 2014 2:47 pm
Forum: Near Surface Geophysics
Topic: GSSI - EMP 400 PROFİLER - GOOGLE EART
Replies: 1
Views: 661

Re: GSSI - EMP 400 PROFİLER - GOOGLE EART

Just a try, embedding youtube video in the post actually works! :D
by topgpr
Fri Mar 28, 2014 12:19 pm
Forum: General Geophysics and Geoscience
Topic: GPR for archeology
Replies: 5
Views: 1378

Re: GPR for archeology

nsm, how do you embed youtube videos here? I love to watch videos without leaving the forum! Thanks.
by topgpr
Mon Mar 24, 2014 8:36 am
Forum: Near Surface Geophysics
Topic: NIITEK announces Charlottesville-area layoffs
Replies: 6
Views: 1147

Re: NIITEK announces Charlottesville-area layoffs

UXO detection in US should still be fine, right? Some companies are still hiring geophysicists using mag and EM61. I guess it is a different matter.
by topgpr
Fri Mar 14, 2014 1:07 pm
Forum: Near Surface Geophysics
Topic: VISOR GPR from NIITEK
Replies: 5
Views: 996

Re: VISOR GPR from NIITEK

gmradar, you are right! I just checked their website and I don't see any mutli-channel products except the Roadscan using horn antennas.
by topgpr
Fri Mar 14, 2014 12:40 pm
Forum: Near Surface Geophysics
Topic: VISOR GPR from NIITEK
Replies: 5
Views: 996

Re: VISOR GPR from NIITEK

This is a military system and the price includes training, installation and support. Also it is coming with an array of metal detectors so that is the reason the price is that high. The most expensive GPR i knew was Terravision, an array GPR, from GSSI but this was tagged at about 100k$ and not 300...
by topgpr
Tue Mar 11, 2014 5:55 pm
Forum: Near Surface Geophysics
Topic: Greetings from Sensors & Software Inc.
Replies: 9
Views: 5616

Re: Greetings from Sensors & Software Inc.

I own a GSSI GPR. I tried Radan long time ago and I don't think they had 3D programs at that time yet.
by topgpr
Mon Mar 10, 2014 5:35 pm
Forum: Near Surface Geophysics
Topic: Greetings from Sensors & Software Inc.
Replies: 9
Views: 5616

Re: Greetings from Sensors & Software Inc.

I consider myself a geophysicist although I am not very good at math stuff. The main reason I want to do 3D visualization is to do "blind" scannings at sites where clients want to search for "everything" which could cause environmental concerns. So, without any specific targets in mind, it's better ...
by topgpr
Mon Mar 10, 2014 3:49 pm
Forum: Near Surface Geophysics
Topic: Greetings from Sensors & Software Inc.
Replies: 9
Views: 5616

Re: Greetings from Sensors & Software Inc.

Hi, sensoft, I checked the link, the program is exactly what I had in mind! Thanks! Currently I am using GSSI GPR regularly, but I might consider switching to Sensors & Software for the data handling I need. Thanks again!
by topgpr
Fri Mar 07, 2014 3:15 pm
Forum: Near Surface Geophysics
Topic: Greetings from Sensors & Software Inc.
Replies: 9
Views: 5616

Re: Greetings from Sensors & Software Inc.

Hello Everyone, My name is Jason and I am the product marketing manager at Sensors & Software Inc. Many of you in the near surface geophysics world might be familiar with our company which specializes in GPR equipment and software solutions for more than 20 years. I am happy to see this active foru...
by topgpr
Fri Mar 07, 2014 1:46 pm
Forum: Near Surface Geophysics
Topic: To design 3D data, 2D data you can send
Replies: 1
Views: 615

Re: To design 3D data, 2D data you can send

Good pictures. Are you offering 3d data rendering services? What is the largest data size you can handle?
by topgpr
Fri Feb 28, 2014 8:24 am
Forum: Near Surface Geophysics
Topic: VISOR GPR from NIITEK
Replies: 5
Views: 996

Re: VISOR GPR from NIITEK

The highest price for a GPR system I ever heard before was about $300,000. I think it's from GSSI. This NIITEK system is apparently the champion. :lol:
by topgpr
Fri Feb 14, 2014 3:52 pm
Forum: Near Surface Geophysics
Topic: Georadar Explorer -- Italy GPR
Replies: 4
Views: 1206

Georadar Explorer -- Italy GPR

With 1, 2 or 4 IDS antennas, great for underground utility locating:

http://www.tesmec.com/en/products/trenc ... radar.html
by topgpr
Sat Dec 07, 2013 9:33 am
Forum: Near Surface Geophysics
Topic: GPR guess game
Replies: 70
Views: 32870

Re: GPR guess game

The wave velocity is so high, it should be sand or something similar.
by topgpr
Wed Nov 20, 2013 9:50 pm
Forum: Near Surface Geophysics
Topic: GPR is getting cheaper
Replies: 1
Views: 552

Re: GPR is getting cheaper

Not a bad deal.