Abstract
This paper explores the concept of a Forward Scattering Radar (FSR) system with a rotational transmitter for target detection and localization. Most of the research and development in FSR used a fixed dedicated transmitter; therefore, the detection of stationary and slow moving target is very difficult. By rotating the transmitter, the received signals at the receiver contain extra information carried by the Doppler due to the relative movement of the transmitter-target-receiver. Hence, rotating the transmitter enhances the detection capability especially for a stationary and slow-moving target. In addition, it increases the flexibility of the transmitter to control the signal direction, which broadens the coverage of FSR networks. In this paper, a novel signal processing for the new mode of FSR system based on the signal’s joint time-frequency is proposed and discussed. Additionally, the concept of the FSR system with the rotational transmitter is analyzed experimentally for the detection and localization of a stationary target, at very low speed and a low profile target crossing the FSR baseline. The system acts as a virtual fencing of a remote sensor for area monitoring. The experimental results show that the proposed mode with the new signal processing scheme can detect a human intruder. The potential applications for this system could be used for security and border surveillance, debris detection on an airport runway, ground aerial monitoring, intruder detection, etc.
Highlights
Forward Scattering Radar (FSR) is a specific condition in bistatic radar mode and is gaining special attention from the modern radar community lately
The aim of this paper is to explore the concept of the FSR system with a rotational transmitter
Forward scattering radar has been discussed for target detection, tracking and classification with
Summary
Forward Scattering Radar (FSR) is a specific condition in bistatic radar mode and is gaining special attention from the modern radar community lately. The number of research works in FSR has increased, the main published manuscripts and reported work on FSR focus on the fixed transmitter and utilize the relative movement of the target for detection and tracking. In this condition, the detection is restricted to the narrow coverage of FSML, and it is highly dependent on the target speed. Two methods of signal pre-processing were tested and implemented on the signal acquired from the experimentation Both methods exploit the difference in the Doppler effect at the receiver due to the relative angular movement of the transmitter with and without the target. It can be noted that, with the identified scenario, the FSR receiver requires a very sensitive Doppler detection, and the Doppler signal is near zero for some condition
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