Archives
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The year of 1980. Field tests of "Zond-1" georadar, the first one of "Zond" series. The equipment assembly was made using transistors and radio valves; it had considerable overall dimensions and weight and therefore was installed in a truck body. The flat antenna system was dragged by a rope on the ground surface. Sounding data were recorded as a density profile on a film and were also displayed as a trace on a CRT screen. |
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This was the way subsurface signals were displayed on "Zond-1" georadar CRT screen. |
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The year of 1983. "Zond-4" georadar central unit. Traces were displayed on a CRT screen; analogue data recording was done on a magnetic cassette. Sounding frequencies: 50 and 100 MHz. |
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The year of 1988. "Zond-8" georadar. Its central unit is shown in the center, recorder is to the right, 120 MHz antenna system to the left, and battery in the rear. Data recording was done again on a magnetic cassette. The recorder was used in the field for profile output onto heat-sensitive paper. |
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The year of 1988. Radiolocation profile (bottom) obtained using "Zond-8" georadar. Top display shows the structure (section) of the environment sounded. Printout was made on heat-sensitive paper roll using a recorder. |
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The year of 1989. "Louch-2" georadar onboard "Mi-8" helicopter. Box antennas seen on helicopter sides. Sounding frequency: 50 MHz. Two-channel receiver. The unit already used the aperture real-time focusing technique. Data recorded using a digital two-channel tape recorder. |
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The year of 1991. "Zond-10" georadar set. The following items are positioned below the dipole antenna (from left to right): battery, cable bundle, charger/power supply, heat-sensitive paper roll recorder, central unit. Microphone fitting used for service information speech recording on a cassette is shown to the right from the central unit. The same cassette was used to record sounding data for subsequent computer input. |
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The year of 1995-96. Soil sounding by means of "Python-02" georadar of 3.2-m length. Sounding signal frequency: from 24 MHz to 190 MHz. Sounding data recording and operation mode control of the georadar are performed using an IBM-compatible Notebook-type computer. Computer/georadar information exchange is via a RS-232c serial port along an optical communication line. Sounding data are shown in real time as a radiolocation profile on a computer display, and are simultaneously recorded as a file on a hard disc. |
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The year of 2000. Archeological survey on the Moscow's Kremlin Cathedral square. Antenna unit 300 MHz is used. |
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Air-coupled 750 MHz shielded antenna mounted on railways trolley for embankment inspection. |
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