Stepped-frequency software-defined ground penetrating radar

Mirel Paun

doi:10.1117/12.2570390

31 December 2020 Stepped-frequency software-defined ground penetrating radar

Mirel Paun

Proceedings Volume 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X; 117180G (2020) https://doi.org/10.1117/12.2570390
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies 2020, 2020, Online Only

Abstract

An experimental implementation for a low-cost, software-defined Ground Penetrating Radar is presented in this paper. The proposed system uses a general purpose low-cost SDR platform with minimal external components. The SDR platform is USRP N200 equipped with WBX RF daughterboard. The only external additions are two off-the-shelf RF switches, an Arduino Uno microcontroller board, a fixed RF attenuator and two Vivaldi antennas. The system implements stepped-frequency radar operation with a bandwidth of 1500 MHz achieving a resolution of 10 cm in air. It works by sweeping this frequency band transmitting sine waves and storing the amplitudes and phases of the scattered waves. Then, this frequency-domain information is translated into time-domain by means of Inverse Fast Fourier Transform (IFFT). The time-domain responses are plotted in an A-scope image. Then, these images are combined to create the classic B-scope image used in ground penetrating radars. All of the above-mentioned assertions have been validated experimentally.

Citation Download Citation

Mirel Paun "Stepped-frequency software-defined ground penetrating radar", Proc. SPIE 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X, 117180G (31 December 2020); https://doi.org/10.1117/12.2570390

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