Motion compensation for vehicle-mounted ground-penetrating radar

Goktug Halac; Tankut Oguz Topbas

doi:10.1117/12.2663327

14 June 2023 Motion compensation for vehicle-mounted ground-penetrating radar

Goktug Halac, Tankut Oguz Topbas

Proceedings Volume 12541, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV; 125410S (2023) https://doi.org/10.1117/12.2663327
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Conference Poster

Abstract

By using IMU, it is aimed to correct the distortions in the vehicle-mounted stepped frequency continuous wave (SFCW) ground penetrating radar (GPR) systems, which occur as a result of the antennas not maintaining their position relative to the surface due to the roughness and the random motion of the antennas within a certain stroke with respect to time. In this context, detrending and numerical integration algorithms were used for motion compensation with real GPR data, which was taken on the vehicle. These algorithms used to obtain instantaneous displacement of the random motion of the antenna relative to the ground. Velocity component in the z direction was filtered with the high-pass filter and displacement was calculated with the numerical integration. Then, motion compensation was made by adding the obtained displacement amount to the real GPR data as a phase. Comparing the motion-compensated and non-motion-compensated conditions, it was seen that the real GPR data was improved dramatically as a result of the operations. Furthermore, it was determined that the real GPR data with the algorithm applied, gives better results in terms of target detection.

Citation Download Citation

Goktug Halac and Tankut Oguz Topbas "Motion compensation for vehicle-mounted ground-penetrating radar", Proc. SPIE 12541, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXIV, 125410S (14 June 2023); https://doi.org/10.1117/12.2663327

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