D.S. Gorkin1, V.I. Sakhterov2

1,2 Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation RAS (Moscow, Russia)

2 LLC "RL Radar in geophysics and radiophysics" (Moscow, Russia)

1 gorkin@izmiran.ru, 2 sakhterov@mail.ru

There are several ways to increase the distance of ground penetrating radar sounding. The first way is to decrease the central frequency of the probing pulse, which will increase the antenna length to hundreds of meters. The second way is to increase the transmitter output power. In addition, it is possible to improve the efficiency of antenna-feeder devices and use mathematical processing methods, for example, with signal accumulation by multiple shooting. With an increase in the antenna length, the probing range increases, but at the same time the spatial resolution decreases and, therefore, the information about the structure of the studied environment is lost. With an increase in the output power of the ground penetrating radar transmitter with a fixed antenna length, the probing range also increases, but the spatial resolution does not decrease. A method for increasing the output power of the ground penetrating radar transmitter has been developed and patented. This method is used in high-power transmitters for deep ground penetrating radar. The use of the found solution increases the level of service qualities of ground penetrating radar for users, since it is possible to set the required radiation power for a specific study. Currently, this method is already being used for deep-sea radiolocation using high-power pulsed georadars with resistively loaded dipole antennas, which has made it possible to achieve probing depths of up to 200 m, and in some cases, up to 500 m.

Gorkin D.S., Sakhterov V.I. The results of increasing the output power of the georadar transmitter. 2025. V. 30. № 3. P. 76−84. DOI: https://doi.org/10.18127/j15604128-202503-09 (in Russian)

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