研究目的
Investigating the use of a photonics-based receiver for decoupled velocity and range measurement using a dual-chirp LFM signal.
研究成果
The proposed photonics-based radar receiver successfully decouples and measures target range and velocity without the need for complex simulation sources or special requirements on the dual-chirp LFM signals. This scheme has potential applications in future radar systems.
研究不足
The experimental conditions limit the echo signal generation to simulation, and the approach requires specific optical and electronic components.
1：Experimental Design and Method Selection:
A dual-chirp LFM signal is used, modulated to an optical carrier, and processed using microwave photonic image reject mixing.
2：Sample Selection and Data Sources:
The reference signal and received echoes are modulated to the optical carrier.
3：List of Experimental Equipment and Materials:
Includes a laser diode, Mach-Zehnder modulators, optical bandpass filters, balanced photodetectors, and an arbitrary waveform generator.
4：Experimental Procedures and Operational Workflow:
The optical signals are processed through a 90° optical hybrid and balanced photodetectors to obtain frequency components corresponding to target range and velocity.
5：Data Analysis Methods:
The frequency components are analyzed to decouple and measure the target range and velocity.
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