We designed and developed a 24GHz surveillance FMCW (Frequency Modulated Continuous Wave) radar with a softwarereconfigurable\nbaseband.The developed radar system consists of transceiver, two selectable transmit antennas, eight parallel receive\nantennas, and a back-end module for data logging and to control the transceiver. The architecture of the developed radar system\ncan support various waveforms, gain control of receive amplifiers, and allow the selection of two transmit antennas. To do this,\nwe implemented the transceiver using a frequency synthesizer device and a two-step VGA (Variable Gain Amplifier) along with\nswitch-controlled transmit antennas. To support high speed implementation features along with good flexibility, we developed a\nback-end module based on a FPGA (Field Programmable Gate Array) with a parallel architecture for the real-time data logging\nof the beat signals received from a multichannel 24GHz transceiver. To verify the feasibility of the developed radar system, signal\nprocessing algorithms were implemented on a host PC. All measurements were carried out in an anechoic chamber to extract a 3D\nrange-Doppler-angle map and target detections.We expect that the developed software-reconfigurable radar system will be useful\nin various surveillance applications.
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