Earth probing radar system

Details Earth probing radar system Earth probing radar system

1980-12-19

1984-02-07

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G02S 1304

Patent

active

044306539

ABSTRACT:
A ground probing radar method and apparatus which is effective to view the earth in advance of coal mining activity provides visual display of a coal seam and particular discontinuities that may lie therein. The system operates in the frequency range of 10 Megahertz to 5 Gigahertz. The received electromagnetic energy is amplified, sampled and band pass filtered with subsequent time gain amplification. A time analog return signal may be viewed directly and/or the return signal may be digitally processed to enable further signal refinement. A control microprocessor is utilized for both tape record control and digital signal processing, and the processor includes the capability for compositing and/or stacking of common source point data for output record and display.

REFERENCES:
patent: 3806795 (1974-04-01), Morey
patent: 3831173 (1974-08-01), Lerner
patent: 4008469 (1977-02-01), Chapman
patent: 4062010 (1977-12-01), Young et al.
patent: 4072942 (1978-02-01), Alongi
patent: 4161731 (1979-07-01), Barr
patent: 4218678 (1980-08-01), Fowler et al.
patent: 4297699 (1981-10-01), Fowler et al.

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