An approach of generating and matched filtering of modulated radar signals using the FPGA

Abstract

The process of generating and matched filtering of three types of modulated radar signals in baseband, using the FPGA Zedboard, is described in this paper. Binary phase sequence, linear frequency modulated (LFM) sequence and Costas sequence was generated using VHDL programming language. In order to perform a comparative analysis of these processes, named sequences had equal values of time-bandwidth product, pulse duration, pulse repetition of frequency and sampling frequency. The process of realization of the matched filtering has been explained using the System Generator program. To confirm efficiency, results of matched filtering of the aforementioned sequences were presented together, from the Matlab program and obtained using the FPGA Zedboard. Percentage values of utilization of resources of the FPGA Zedboard were presented, of the each coding sequence particularly.

Keywords

• radar signal
• signal modulation
• signal filtering
• signal generating
• digital signal processor
• programming language