S-band FMCW Radar for Target Tracking and Monitoring

A Frequency Modulated Continuous Wave (FMCW) Doppler radar was assembled to detect human as sample target. Its operating frequency is at 2.4GHz with transmitting power of 10.41 dBm. Range resolution of the radar is 2.8 meters at 53.2MHz signal bandwidth and chirp waveform of 40ms. The radar exploits Doppler principle to acquire the range and velocity information of targets whilst a Moving Target Indicator (MTI) pulse canceller is utilized to filter incoming noise signal. With the use of Chirp period-bandwidth product Frequency Modulated (FM) waveform and deramping process, the radars’ Signal to Noise Ratio (SNR) was improved up to 42 dB. The attained maximum range is about 200 meters for a target with Radar Cross Section (RCS) of 1m2. The constructed radar is capable to measure the speed of moving target at 0.645m/s and above with great accuracy. The radar can detect and determine the position of pedestrians with 0.18% percentage error

Analyzing and Improving MIMO Radar Detection Performance in the Presence of Cybersecurity Attacks

A distributed MIMO radar system consists of multiple transmitters, receivers, and a fusion center where the final target detection decision is made. It has previously been shown that a distributed MIMO radar offers improved performance compared with a conventional radar system due to the increased system diversity and degrees of freedom. However, as a complicated distributed system, it is vulnerable to cybersecurity attacks against its three key components: the transmitters, the receivers, and the communication links that connect them and the fusion center. In this paper, we investigate the impact of cybersecurity attacks on detection performance of a distributed MIMO radar. We show that the target detection performance degrades very significantly if the MIMO radar is not aware of the attacks. To mitigate the attacks, we develop robust detection schemes which can greatly improve detection performance when the radar is under attack