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

来源：

OPTICAL ENGINEERING | 2018年 / 57卷 / 11期

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

页数：5

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