Research Projects
Funded and ongoing research initiatives at SSRG, bridging theoretical signal processing formulations with experimental hardware testbeds and industrial applications.
Synthetic Aperture Radar (SAR) Imaging Platform
Development of an end-to-end Synthetic Aperture Radar (SAR) imaging platform operating in the ISM band. Integrates custom ISM-band antenna design, frequency synthesis, coherent transmit-receive RF architecture, and computational image-formation algorithms to produce high-resolution spatial radar images.
2.45 GHz Closed-Loop Beam-Steering Phased-Array Antenna System
Design, simulation, fabrication, and experimental validation of a 2.45 GHz closed-loop beam-steering phased-array antenna system. Features custom 4-element Vivaldi antenna arrays, 1-to-4 Wilkinson power combiners, 2-bit digital switched-line delay networks, and automated Python RF testing environments for real-time telemetry.
Phased-Array Passive Radar System Prototype
Development of an experimental phased-array passive radar prototype featuring linear array antenna design at designated resonant frequency, analog beam steering, and a software-defined radio (USRP) digital signal processing pipeline for real-time target detection.
Bioimpedance-Based Non-Invasive Cardiovascular Monitoring System
Development of an integrated hardware testbed for continuous non-invasive cardiovascular monitoring using electrical bioimpedance and MIPS embedded processing. The project integrates physiological signal acquisition, analog/digital front-end filtering, and automated cardiac parameter extraction.
Signal Processing for Ground Penetrating Radar
Research into advanced signal processing algorithms for ground penetrating radar (GPR) systems, targeting subsurface object detection and characterisation. The project covers migration algorithms, clutter suppression, and feature extraction for buried object classification.
Passive WiFi Radar
Development and experimental characterization of a passive radar system exploiting ambient IEEE 802.11 Wi-Fi transmissions for target detection and tracking. Features dual-channel NI USRP-2901 RF front-ends, GNU Radio real-time acquisition pipelines, cross-correlation range-Doppler processing, and dynamic background subtraction.
Through-the-Wall Imaging Radar
Investigation of radar imaging techniques for detecting and localising targets behind walls and other opaque barriers. The project addresses wall clutter mitigation, multipath exploitation, and reconstruction of behind-wall scenes using synthetic aperture and compressive sensing approaches.