Ground-penetrating radar: Difference between revisions
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'''Ground-penetrating radar''' works much like regular [[radar]], using pulses of [[electromagnetic radiation]] in the [[microwave]] [[band (radio)|band]] of the [[radio spectrum]], and reading the reflected signal to detect subsurface structures and objects without drilling, probing or otherwise breaking the ground surface. |
'''Ground-penetrating radar''' works much like regular [[radar]], using pulses of [[electromagnetic radiation]] in the [[microwave]] [[band (radio)|band]] of the [[radio spectrum]], and reading the reflected signal to detect subsurface structures and objects without drilling, probing or otherwise breaking the ground surface. |
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Revision as of 10:05, 27 July 2005
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Ground-penetrating radar works much like regular radar, using pulses of electromagnetic radiation in the microwave band of the radio spectrum, and reading the reflected signal to detect subsurface structures and objects without drilling, probing or otherwise breaking the ground surface.
The range of the scan is affected mostly by the conductivity and composition of the ground; the resolution of the scan is affected by the scanning frequency. Higher frequencies do not penetrate as far as lower frequencies, but give better resolution.
Ground-penetrating radar units must generally be in contact with the ground for best performance.
A similar technology is wall-penetrating radar, which can read through walls and even act as a motion sensor for police.
Both types of radar are considered ultra-wideband. These differ from a metal detector, which uses electromagnetic induction rather than reflection.
see also Georadar
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