Ultrafast and Wideband Microwave Photonic Frequency-Hopping Systems: A Review
Ultrafast and Wideband Microwave Photonic Frequency-Hopping Systems: A Review
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DOI：
10.3390/app10020521
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
Qidi Liu;M. Fok
中科院分区：
文献类型：
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作者：
Qidi Liu;M. Fok
提高数据传输中的信息安全，提供军事应用中的抗干扰措施，以及提高移动和卫星通信中的数据容量的需求日益增加，导致对高速跳频系统的迫切需求。传统的电子跳频系统存在数据速率低、跳频速度低、跳频带宽窄等问题。不幸的是，这些都是促进新兴微波系统跳频的重要方面。微波光子学的最新进展——利用光来处理微波信号——为解决电子跳频系统面临的挑战提供了有希望的解决方案。本文探讨了实现实时跳频系统所面临的挑战。全面讨论了各种微波光子学跳频系统的工作原理和结果，这些系统具有宽的跳频带宽和从纳秒到几十皮秒的跳频速度。最后，还介绍了一种可能用于自适应跳频的仿生抗干扰系统。
The increasing demands to enhance information security in data transmission, providing countermeasures against jamming in military applications, as well as boosting data capacity in mobile and satellite communication, have led to a critical need for high-speed frequency-hopping systems. Conventional electronics-based frequency-hopping systems suffer from low data rate, low hopping speed, and narrow hopping-frequency bandwidth. Unfortunately, those are important aspects to facilitate frequency-hopping in emerging microwave systems. The recent advancement of microwave photonics—the use of light to process microwave signals—provides promising solutions to tackle the challenges faced by electronic frequency-hopping systems. In this paper, the challenges of achieving real-time frequency-hopping systems are examined. The operation principles and results of various microwave photonics-enabled frequency-hopping systems are comprehensively discussed, which have wide hopping-frequency bandwidth and frequency-hopping speed from nanoseconds to tens of picoseconds. Lastly, a bio-inspired jamming-avoidance system that could potentially be used for adaptive frequency-hopping is also introduced.