Ghost Target Analysis and Compression in FMCW Radars

This paper addresses the parameters that affect multiple interacting Frequency Modulated Continuous Wave radars, which can cause mutual interference. Multiple parallel chirp radars can shape ghost targets in the Range-Doppler plane as a unique case of mutual interference. In a real-world scenario, the carrier frequencies of the two radars are not synchronized. Therefore, the ghost will occupy a significant portion of the Range-Doppler plane, which can reduce the quality and clarity of the target signature and increase the false alarm in the detection process. By synchronizing two radars at the frame level, it has been tried to capture the ghost target's highest interfering condition and identify the radar circuit's influencing parameters on the chirp parallelization. This synchronizing FMCW radar system can minimize ghost targets and reduce mutual interference through a frequency-shifting algorithm that compresses the ghost targets. The result is an effective strategy for improving radar system precision and reliability in manageable environments with multiple interacting radar systems, which is crucial for future applications like autonomous vehicles and surveillance.