Photonic-assisted radio frequency waveform generation for high-range resolution microwave radar

被引:6
|
作者
Zhang, Wenrui [1 ]
Cao, Chongqing [1 ]
Zeng, Xiaodong [1 ]
Feng, Zhejun [1 ]
机构
[1] Xidian Univ, Sch Phys & Optoelect Engn, Xian, Shaanxi, Peoples R China
关键词
microwave photonics; radar; electro-optic modulation; heterodyne;
D O I
10.1117/1.OE.57.11.114103
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In modern radar systems, the target to achieve high-range resolution poses a high requirement on bandwidth and stability of probe radio frequency (RF) waveforms. We experimentally demonstrate the generation of RF waveforms with a low bandwidth electrical instrument and optical bandwidth multiplication method. Based on the high-order modulation-sideband of electro-optic modulators, wideband optical swept waveforms are generated from narrow band RF swept waveforms with a bandwidth multiplication factor of eight. By heterodyne beating the swept waveforms with a single tone frequency driven on the same dual-drive Mach-Zehnder modulator, we generate coherent wideband RF waveforms with linearly, V-shaped, and quadric frequency modulation, respectively. These waveforms exhibit high time-bandwidth products up to 2560 and high phase-noise performance. The utility of these generated RF waveforms for ranging radar system has been proven a pulse compression process. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
引用
收藏
页数:5
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