Multi-Target Detection for FMCW Radar System

• Main Authors: Tsai, Tsung-Yu, 蔡宗育
• Other Authors: 李大嵩
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/13845575088832241523

碩士 === 國立交通大學 === 電信工程研究所 === 102 === Active safety has caught much attention in automotive radar system recently. To acquire target’s movement, the detector plays an important role in the system. Conventional detectors adopt constant false alarm rate (CFAR) with an angle estimator to obtain precise target information. However, in the multi-target scenario, performance of the detector degrades due to the constraint of CFAR. In addition, signal overlapping in the spectrum leads to angle estimation error. In this thesis, we first design an adaptive detector to maintain the detection performance in time-varying environment. To deal with clutter effect, we propose a miss avoidance procedure by using the reliable prior tracking data. In addition, identification is proposed to mitigate the overlapping effect according to the characteristics of array signal. From simulation results, the proposed procedure achieves the goal of active safety by improving the detection quality and adjusting parameters dynamically according to the environment.