ACCURACY ANALYSIS OF DISTANCE IN THROUGH-WALL RADAR BASED ON FREQUENCY MODULATED CONTINUOUS WAVE (FMCW) ULTRA-WIDEBAND (UWB) USING NUMERICAL SIMULATION GPRMAX

• Main Author: Maulina Fitri, Rizka
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/87626
• Institution: Institut Teknologi Bandung

Wave (FMCW) with Ultra-Wideband (UWB) frequency has significant potential in detecting objects behind walls, particularly in the security and Search and Rescue (SAR) sectors. This study aims to estimate the accuracy of distance measurements performed by the FMCW-based TWR radar and validate it using numerical simulations with gprMax. Wooden boards with specific dimensions were used to represent standard wall barriers. The results of this study indicate that for the FMCW-based TWR radar, the distance to the target and the wooden medium significantly affect the amplitude and shape of the reflected signal, where targets at greater distances experience signal attenuation due to propagation through the wooden medium. The numerical simulations with gprMax successfully replicated the phenomena observed in real-world experiments with high accuracy, as evidenced by the low error values in various simulation models. Furthermore, the analysis results show that factors such as the relative permittivity of the medium and the presence of multiple targets can significantly impact detection accuracy. This study concludes that combining real-world experiments with numerical simulations using gprMax can be an effective method for evaluating and optimizing TWR radar systems. Additionally, it can be concluded that the FMCW-based TWR radar has the potential to be used in the security and SAR sectors, provided its accuracy can be continuously optimized.