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Optical network solution to the synchronization of distributed coherent aperture radar
Optics Letters
|April 16, 2019
Summary
We developed an optical network to synchronize distributed coherent aperture radar (DCAR) units, overcoming a key challenge for next-generation high-sensitivity radar systems. This network ensures precise timing and phase alignment for improved radar performance.
Area of Science:
- Radar Systems Engineering
- Optical Networking
- Microwave Photonics
Background:
- Distributed coherent aperture radar (DCAR) offers high sensitivity, crucial for next-generation radar.
- Synchronization of geographically dispersed radar units is a significant technical hurdle for DCAR implementation.
Purpose of the Study:
- To propose and validate an optical network solution for achieving precise synchronization in DCAR systems.
- To enable the effective combination of radar beams from distributed units with minimal energy loss.
Main Methods:
- Utilized microwave photonics techniques for phase-coded pulse generation.
- Implemented time and phase synchronization across distributed radar units via the optical network.
- Conducted experimental validation in both fiber and space transmission environments.
Main Results:
- Successfully demonstrated the capability of the optical network to synchronize distributed radar units.
- Achieved negligible energy loss in the combined radar beams upon successful synchronization.
- Verified the network's functionality in diverse transmission scenarios.
Conclusions:
- The proposed optical network effectively addresses the synchronization challenge in DCAR.
- Microwave photonics provides a viable solution for high-performance, next-generation radar systems.
- The experimental results confirm the feasibility and efficiency of the synchronized DCAR approach.
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