Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Patent
1996-10-07
1998-06-16
Strecker, Gerard R.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
324329, 342 22, 342181, 342371, 342459, 343711, 343876, G01V 312, G01V 317, G01S 1302, H01Q 324
Patent
active
057676798
ABSTRACT:
Apparatus for use in a geophysical prospecting method from a vehicle for site plan pictorial representation of inclusions present in substratum soil which reflect modulated electromagnetic oscillations. This apparatus is particularly useful for detecting inclusions such as veins of water, ore beds, pipelines, unexploded bombs, cavities, ammunition and residual fissures. A transmitter and receiver are mounted in the vehicle with a common quartz oscillator in a sawtooth generator. A transmitting antenna and receiving antenna are provided with an amplifier connected to the latter. A pulse shaper employs the width of received triangular pulses from the amplifier to give needle pulses and a color transmitter has four power amplifiers and is a goniometrically scanned four-cycle transmitter, and accordingly the cathode ray tube has four crosswise arranged horizontal sweep coils in addition to the frame coil. The frequency of the frame sweep and scanning signals is 50 Hz and these signals are stabilized using a synchronizing signal obtained from the quartz crystal/oscillator circuit. The crystal frequency typically is 50 kH and the synchronization signals are obtained by a frequency divider network having a ratio of 1000:1.
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Radar finde verschollene Mauern. (1988) In: Bild der Wissenschaft 1/88, s.65, 66, 70.
Telegon IV Sichtpeilanlage PST 638/3 der Fa. Telefunken KB/016/2, S.2-11; S.5, Bild 4 i.v.m. Text (1921).
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