Detection and Classification of Target’s Speed and Size Using LTE-Based Passive Forward Scattering Radar

Abstract

Abstract Radar is a system that uses radio waves to detect any objects that pass through the range of its system. The radar system must have two main components which are the transmitter and the receiver. The passive forward scattering radar is being used to detect the target’s speed and size. This passive radar uses the cell tower of Long-Term Evolution (LTE) as a transmitter and will illuminate any moving targets that pass through the system. The passive radar receiver which can be remotely placed will detect the scattered radiation of the target. The detection of the target is in a waveform called the Doppler signature. From the Doppler signature, the target’s speed and size can be classified according to its group. In this research, a different target has a different Doppler signature because every target’s body has a different body build. The differences in Doppler signature also can be detected when the target moves at different speeds. The study of different speed targets will relate to the relationship between the time and frequency theory. The data collection of Doppler signature is collected in three different places which are Universiti Teknologi MARA (UiTM, Shah Alam), Kampung Sungai Kajang (Tanjung Karang), and Malaysia Agro Exposition Park Serdang (MAEPS) (Serdang). In conclusion, the LTE-based passive forward scattering radar system is applicable to detect and classify every target with different speed and size which is useful to the country’s border safety and security system.