Ultra wideband ground penetrating radar imaging of heterogeneous solids
- Brentwood, CA
- Livermore, CA
A non-invasive imaging system for analyzing engineered structures comprises pairs of ultra wideband radar transmitters and receivers in a linear array that are connected to a timing mechanism that allows a radar echo sample to be taken at a variety of delay times for each radar pulse transmission. The radar transmitters and receivers are coupled to a position determining system that provides the x,y position on a surface for each group of samples measured for a volume from the surface. The radar transmitter and receivers are moved about the surface, e.g., attached to the bumper of a truck, to collect such groups of measurements from a variety of x,y positions. Return signal amplitudes represent the relative reflectivity of objects within the volume and the delay in receiving each signal echo represents the depth at which the object lays in the volume and the propagation speeds of the intervening material layers. Successively deeper z-planes are backward propagated from one layer to the next with an adjustment for variations in the expected propagation velocities of the material layers that lie between adjacent z-planes.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Number(s):
- US 5835054
- OSTI ID:
- 871970
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
wideband
ground
penetrating
radar
imaging
heterogeneous
solids
non-invasive
analyzing
engineered
structures
comprises
pairs
transmitters
receivers
linear
array
connected
timing
mechanism
allows
echo
sample
variety
delay
times
pulse
transmission
coupled
position
determining
provides
surface
samples
measured
volume
transmitter
moved
attached
bumper
truck
collect
measurements
positions
return
signal
amplitudes
represent
relative
reflectivity
receiving
represents
depth
lays
propagation
speeds
intervening
material
layers
successively
deeper
z-planes
backward
propagated
layer
adjustment
variations
expected
velocities
lie
adjacent
radar pulse
return signal
material layer
penetrating radar
radar transmitter
linear array
material layers
delay time
propagation velocities
signal echo
signal amplitude
signal amplitudes
ground penetrating
delay times
band radar
pulse transmission
structures comprises
radar echo
comprises pairs
wideband radar
ultra wideband
timing mechanism
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