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Distributed Aperture Coherence-synthetic Radar Joint Antenna Gain Analysis
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摘要: 分布式孔径相参合成雷达通过多雷达发射电磁波空间功率合成，实现远距离大威力探测；通过多雷达空域扩展，实现目标角度高精度测量。分布式孔径相参合成雷达具有生存能力强、效费比高、角分辨率高、扩展性强、实现性好等技术优势。该文首先对无方向性多点辐射源联合天线增益进行了分析，给出了理论推导和仿真分析；然后建立分布式阵列几何模型，分别分析了联合天线方向图和联合天线增益，得出了联合天线增益近似等于单元雷达数目与单元雷达增益乘积的结论；最后，利用HFSS软件进行了联合天线增益仿真，进一步验证了联合天线增益分析结论。Abstract: By the synthesis of multi-radar electromagnetic wave space energy, Distributed Aperture Coherence-synthetic Radar (DACR) achieves long-range power detection via multi-radar airspace expansion to realize high-precision target angle measurement. DACR has the advantages of strong survival ability, a high cost-effectiveness ratio, high angular accuracy, strong expandability, and easy realization. In this article, we analyze the joint antenna gain of a non-directional multi-point source and, given the theoretical derivation and simulation analysis, we establish a distributed-array-antenna geometric model, analyze the joint antenna pattern and gain, respectively, and determine that the joint antenna gain is approximately equal to the unit radar number and the unit radar gain product. Lastly, we perform a joint antenna gain simulation using HFSS software to further verify the joint antenna gain results.
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Key words:
- Distributed /
- Coherence-synthetic /
- Joint antenna /
- Gain analysis
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图 5 分布式阵列与单元雷达天线方向图比较
Figure 5. Antenna pattern comparison between distributed array and unit radar
图 11 分布式孔径相参合成雷达仿真模型
Figure 11. Distributed Aperture Coherence-synthetic Radar simulation model
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