ORFEUS aims to ensure the technical, regulatory and commercial viability of the drill tip GPR, which will be achieved through technical refinement, laboratory and field testing in collaboration with end users, and standardisation together with validation of the technical specification and prototype system. Below are summarised the key optimisation tasks and the objectives:
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System component
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Tasks
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Objectives
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Bore-head GPR
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- Optimise antenna configuration
- Ruggedise bore-head, electronic housing, and electrical/mechanical interface to the disposable drill head
- Dynamic range of 40 dB (to give a detection range of 50 cm in a medium attenuation soil)
- System clutter decay rate not exceeding 4dB/ nanosecond
- Ruggedise to survive 300G, 60C and fluid pressures up to 100 bar
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- Dynamic range of 40 dB (to give a detection range of 50 cm in a medium attenuation soil)
- System clutter decay rate not exceeding 4dB/ nanosecond
- Ruggedise to survive 300G, 60C and fluid pressures up to 100 bar
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Software
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- Optimise visual data to the operator
- Optimise software code for real-time execution
- Generate real-time warnings to the drilling machine operator
- Data throughout of 250 traces per second
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- Generate real-time warnings to the drilling machine operator
- Data throughout of 250 traces per second
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Drill string data communications link
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- Optimise communications link
- Produce automatic drill rod coupling mechanism
- Investigate low-loss transmission line conductor materials
- Extend communications range to 500 metres with 2Mbps minimum data rate
- Coupling and verification of drill string sections in less than 2 seconds
- Ruggedise to survive the environment described above
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- Extend communications range to 500 metres with 2Mbps minimum data rate
- Coupling and verification of drill string sections in less than 2 seconds
- Ruggedise to survive the environment described above
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