Title:
METHOD OF AND APPARATUS FOR UNDERGROUND PROSPECTING RADAR
Document Type and Number:
Japanese Patent JPS5667778
Kind Code:
A
Abstract:
The method and apparatus look in advance of coal mining activity to provide a visual display of a coal seam and particular discontinuities that may lie therein. The radar method operates in the frequency range of 10 Megahertz to 5 Gigahertz and employs received signal- processing, both analog and digital, which aims to reduce problems inherent with source coherent noise or interference as well as random noise. The received electromagnetic energy is amplified, sampled and band pass filtered with subsequent time gain amplification thereafter, 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.
Inventors:
TEODOORU EDOWAADO MOSAA
SUTEIIBUN DEBITSUDO HEIRU
JIEEMUSU CHIYAARUZU FUOURAA
JIYURIAN BAAHAMU KUUN
CHIYAARUZU JIYOSEFU SHIEEFUAAZ
SUTEIIBUN DEBITSUDO HEIRU
JIEEMUSU CHIYAARUZU FUOURAA
JIYURIAN BAAHAMU KUUN
CHIYAARUZU JIYOSEFU SHIEEFUAAZ
Application Number:
JP12246280A
Publication Date:
June 08, 1981
Filing Date:
September 05, 1980
Export Citation:
Assignee:
CONTINENTAL OIL CO
International Classes:
G01S13/88; G01S13/06; G01V3/12; (IPC1-7): G01S13/04; G01V3/12
Domestic Patent References:
| JPS4879101A | 1973-10-24 |
Foreign References:
| US4008469A | 1977-02-15 |