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An Impulse GPR Application

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DIPOLE ANTENNA. PROBE. Semi-MONOSTATIC. DEPLOYMENT. Transmitter. inside. GeoMole BHR Transmitter ... Digital Acquisition Unit. ADC. Optional. Attenuator. TN7101 ... – PowerPoint PPT presentation

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Title: An Impulse GPR Application


1
An Impulse GPR Application
  • By Guma Kahimbaara

2
User Requirements
  • Model a GPR The GeoMole BHR
  • Simulate and Test BHR in SystemView
  • Apply Signal Processing to Echo
  • Compare performance against SFCW GPR

3
GeoMole BHR Operation Model
Semi-MONOSTATIC DEPLOYMENT
ASSYM. LOADED DIPOLE ANTENNA PROBE
TRANSMITTER
Transmitter inside
4
GeoMole BHR Transmitter
Antenna
100 MHz LPF
5
GeoMole BHR Transmitter Antenna
100 Wu-King Resistive Loading
Copper Pipe housing Transmitter
Transmitter Antenna
6
Lossy Propagation Medium - Norite
Black Body Radiation 300K
Gain and Phase Custom Filter
Loss at Inter-media Boundary
7
GeoMole BHR Receiver Antenna
Without Noise
With Noise bandpassed
8
Receiver Amp Chain Optic Link
TN7111
MAR-6
MAR-6
RECEIVER AMP CHAIN
HFBR 2406
External Optic Link
Rx Patchcord
DAQ Patchcord
9
Digital Acquisition Unit
Optional Attenuator
ADC
TN7101 SCU Amp
Clock
ADC input
ADC output
10
Custom Filters
11
Progress Report
  • COMPLETED TASKS
  • Modeling the GeoMole BHR
  • Simulating the BHR in SystemView
  • REMAINING TASKS
  • Signal Processing
  • Comparison against SFCW GPR
  • Improvements to simulation model
  • Stacking
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