研究目的
Investigating the use of photonics to enhance radar systems' performance and reconfigurability through the implementation of a network of widely distributed radars enabled by fiber connections.
研究成果
The results confirm photonics as an enabling technology for coherent MIMO radars with widely distributed antennas, offering improved signal coherence and large-bandwidth long-range signal distribution over fiber. The study demonstrates significant potential for enhancing radar detection resolution.
研究不足
The preliminary setup's reduced MIMO configuration and environmental non-idealities may affect the system's performance. The study suggests further optimization and testing in varied conditions.
1：Experimental Design and Method Selection:
The study employs a photonic core and several radar heads (RHs) remoted by optical fibers, utilizing a centralized photonic approach for driving separated radars simultaneously.
2：Sample Selection and Data Sources:
The experiment involves two cylinders as targets, controlled and kept at a specific height, with the setup tested in an outdoor environment.
3：List of Experimental Equipment and Materials:
Includes a solid-state mode-locked laser (MLL), photodiodes (PDs), electro-optic modulators, single-mode fibers (SMF), ultra-wideband Vivaldi-shaped horn antennas, and an analog-to-digital converter (ADC).
4：Experimental Procedures and Operational Workflow:
The process involves signal generation, distribution, and reception leveraging photonics' frequency flexibility and phase noise stability, with signals transmitted and received via optical fibers.
5：Data Analysis Methods:
The study uses MIMO processing to analyze the received signals, focusing on improving radar detection resolution.
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