| 引用本文: | 彭韶文，李尚远，薛晓晓，郑小平. 基于微波光子学的超分辨双波段雷达[J]. 雷达科学与技术, 2021, 19(2): 172-177.[点击复制] |
| PENG Shaowen,LI Shangyuan,XUE Xiaoxiao,ZHENG Xiaoping. Super-Resolution Dual-Band Radar Based on Photonics Technology[J]. Radar Science and Technology, 2021, 19(2): 172-177.[点击复制] |
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| 摘要: |
| 本文提出并验证了一种基于微波光子学的双波段雷达，并通过相参信号融合处理实现了超分辨一维距离像。相比于传统雷达，该微波光子雷达不仅可以同时产生和处理宽带的双波段信号，而且系统结构非常紧凑。同时，由于双波段信号共用了一套收发机，各波段信号的相位保持着很好的稳定性，因此通过对这两波段的信号进行相参融合处理得以实现超分辨成像。在实验中，雷达工作于S波段和X波段，两波段的带宽分别为1.5GHz和3GHz。对两金属板进行探测，通过对双波段的信号进行融合处理，该雷达的分辨率可高达1.6cm，远高于工作于单频段模式的雷达。该技术将大大提高目标识别和分辨的准确性。 |
| 关键词: 微波光子 超分辨一维距离像 双波段雷达 相参融合处理 |
| DOI：DOI:10.3969/j.issn.1672-2337.2021.02.009 |
| 分类号:TN29 |
| 基金项目:国家自然科学基金(No.61690191, 61690192, 61420106003, 61621064) |
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| Super-Resolution Dual-Band Radar Based on Photonics Technology |
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PENG Shaowen,LI Shangyuan,XUE Xiaoxiao,ZHENG Xiaoping
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1.Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;2.Beijing National Research Center for Information Science and Technology,Tsinghua University, Beijing 100084, China
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| Abstract: |
| We propose and demonstrate a photonics-based dual-band radar for super-resolution range profile by coherent fusion processing. Compared with the electronic counterpart, the photonic-based radar is able to ge-nerate and process the dual-band signals with large bandwidth. Besides, the structure is highly compact with a single transceiver. What’s more, the sharing of a single transceiver for signals with different bands ensures perfect stability among the waveforms, which makes it possible to realize a super-resolution range profile by fusion of dual-band signals. In the experiments, a dual-band radar operating in the S-band with a bandwidth of 1.5GHz and X-band with a bandwidth of 3GHz is established. The evaluation of the radar system is achieved through range profiles of two metal planes and the range resolution is up to 1.6cm by coherent fusion processing, much higher than any single-band radar. This technology would improve the accuracy of classification and recognition of the targets. |
| Key words: microwave photonics super-resolution range profile dual-band radar coherent fusion processing |
