基于漏波天线的分布式微波辐射计

doi:10.12305/j.issn.1001-506X.2022.07.07

Abstract

Abstract:

In order to alleviate the contradiction between the performance and the volume and weight of the traditional real aperture microwave radiometer, and also to solve the problem that high spatial resolution is at the lost of systematic structure and signal processing complexity in the synthetic aperture microwave radiometer, a distributed microwave radiometer system is proposed based on the leaky wave antenna. First, the scheme about the system is introduced, including the leaky wave antenna and the receiver scheme. Second, the key specifications of the system such as angular resolution and system sensitivity are analyzed in detail, and the calibration scheme is also introduced. Finally, the system proposed is examined through modeling and simulation analysis. The results show that the system has a simple structure, a low complexity, and a simple signal processing, and the errors between the brightness temperature and the real brightness temperature prove to be very small through modeling and simulation analysis. In conclusion, the system has a potential to be developed as a new type of microwave radiometer system.

Key words: leaky wave antenna, distributed, microwave radiometer

CLC Number:

TN82

Pengfei LI, Hailiang LU, Tao HAN, Pengju DANG, Yinan LI, Hao LI, Rongchuan LYU. Distributed microwave radiometer based on leaky wave antenna[J]. Systems Engineering and Electronics, 2022, 44(7): 2125-2133.

Figures/Tables 18

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性能指标	方案1	方案2	方案3
硬件复杂度	简单	较复杂	简单
信号复杂度	简单	适中	较难
工程实现难度	简单	简单	较难
系统灵敏度	低	高	高

性能指标	基于漏波天线的分布式微波辐射计	实孔径微波辐射计	综合孔径微波辐射计
天线尺寸	大	大	小
系统结构复杂度	适中	较低	较高
信号处理复杂度	较复杂	简单	复杂
工程实现难度	适中	简单	较难
造价成本	低	低	高
重量	低	高	较高
体积	低	高	较高
功耗	较低	低	高
可靠性	高	低	高

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Distributed microwave radiometer based on leaky wave antenna

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References 31

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