FPGA Implementation of Moving Target Indicator Filter for FMCW Radar Data

• Published in: 2023 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT) pp. 1 - 6
• Main Authors: Sreelekha, Nakka, Vandana, G S, Srihari, Pathipati, Leela Rani, V, Raju, M Kama, Reddy, T Srinivasula
• Format: Conference Proceeding
• Language: English
• Published: IEEE 14.07.2023
• Subjects: Doppler radar; Doppler shift; filter; Finite impulse response; Finite impulse response filters; FMCW radar; Hardware; moving target indication; pipelining; Sensors; Throughput; Very large scale integration
• ISSN: 2766-2101
• DOI: 10.1109/CONECCT57959.2023.10234810

This study examines several digital finite impulse response (FIR) filter approaches for moving target indication (MTI) employing short-range FMCW radar sensors. The FIR filters can filter out low doppler shift responses from undesirable stationary targets. A 77 GHz AWR1642 FMCW radar sensor and a DCA1000 data capture card are used to build a hardware configuration. A single data frame (samples \times chirps) containing a target approaching the radar is been considered. The recorded radar is preserved in a 256x64 matrix of in-phase and quadrature-phase components, which is then processed using various digital filters. The radar provides insights into doppler characteristics for the observations. This study proposes designing and implementing a two-tap and a three-tap FIR filter-based MTI processing module to reduce static targets. The VLSI DSP pipelining approach is deployed to improve filter performance regarding critical path delay and throughput.