A subspace-based auto-paired range and direction-of-arrival (DOA) estimation algorithm without joint diagonalisation for multi-target detection of dual-channel frequency modulated continuous-wave (FMCW) radar are proposed. The proposed method, which is based on signal subspace, exploits the shift invariant structure of the stacked Hankel matrix for the paired range and DOA estimation of multiple targets. To verify the effectiveness of the proposed method, the dual-channel FMCW radar is implemented and its effectiveness verified in an anechoic chamber environment.
In this paper, we designed and implemented a 24 GHz FMCW radar system based on FPGA and DSP. We also developed a 24 GHz FMCW radar RF module composed of a single transmitter and a single transmitting antenna array of five elements to measure distances at a high degree of accuracy for 24 GHz FMCW radar. To verify the developed radar system, a test bed was fabricated to measure the distance for every 1 mm. The experimental results show that the system is accurate to a distance of approximately 3 cm between 0.5 m and 3.4 m.
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