Ambitious cheap GPR ideas, not even a pre-project....
Posted: Sat Jan 12, 2008 10:36 pm
Hi all. A lunatic one...
GPR is ground penetrating radar. You transmit into the soil, read a bounced signal, like an echosounder. Not much more.
A useable wavelenght is 2 metres, and I have a some 2m very bored marine radios that would be happy to see some activity.
They are 25 Watts, sort of low power for the task, but useable too for not very deep use.
A flat antenna http://www.ece.uiuc.edu/images/about/hi ... lide06.gif
could be dragged trough the soil surface, a car battery could provide the juice, hitting only a burst every metre traveled could be enough, the whole contraption towed on a 'radioflyer' cart....
But how to capture the receiver return ?
If the burst is tone modulated and Rx fast enough, could it work ?
How to visualize the return?
An echosounder/fishfinder display would be neat to adapt, but unsure how...
Comments?
Miguel
GPR is ground penetrating radar. You transmit into the soil, read a bounced signal, like an echosounder. Not much more.
A useable wavelenght is 2 metres, and I have a some 2m very bored marine radios that would be happy to see some activity.
They are 25 Watts, sort of low power for the task, but useable too for not very deep use.
A flat antenna http://www.ece.uiuc.edu/images/about/hi ... lide06.gif
could be dragged trough the soil surface, a car battery could provide the juice, hitting only a burst every metre traveled could be enough, the whole contraption towed on a 'radioflyer' cart....
But how to capture the receiver return ?
If the burst is tone modulated and Rx fast enough, could it work ?
How to visualize the return?
An echosounder/fishfinder display would be neat to adapt, but unsure how...
Comments?
Miguel