| 3mm波电磁特性测量雷达 |
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| 引用本文： | 张永鸿,林权,樊勇,邹林,李良超,杨建宇.3mm波电磁特性测量雷达[J].红外与毫米波学报,2011,30(1):38-41. |
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| 作者姓名： | 张永鸿 林权 樊勇 邹林 李良超 杨建宇 |
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| 作者单位： | 电子科技大学,电子工程学院,四川,成都,611731 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 为了对非静止的烟幕进行插损、反射、辐射等电磁特性的测量,采用锁相技术研制了3mm波雷达反射截面积(RCS)测量雷达和3mm波辐射特性测量雷达(辐射计).前者采用收发分置的连续波双天线体制,可根据目标尺寸和反射的大小更换天线;采用毫米波固定衰减器和远近程切换,以及FFT积累的数字接收,提高灵敏度和动态范围.后者是超外差中...
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| 关 键 词： | 毫米波 雷达 锁相 烟幕 雷达反射截面积 辐射计 |
| 收稿时间： | 7/17/2009 9:12:04 AM |
| 修稿时间： | 7/17/2009 9:12:04 AM |
3 mm wave electromagnetic characteristic measurement radar |
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| ZHANG Yong-Hong,LIN Quan,FAN Yong,ZOU Lin,LI Liang-Chao and YANG Jian-Yu.3 mm wave electromagnetic characteristic measurement radar[J].Journal of Infrared and Millimeter Waves,2011,30(1):38-41. |
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| Authors: | ZHANG Yong-Hong LIN Quan FAN Yong ZOU Lin LI Liang-Chao and YANG Jian-Yu |
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| Affiliation: | University of Electronic Science and Technology of China,University of Electronic Science and Technology of China,University of Electronic Science and Technology of China,University of Electronic Science and Technology of China,University of Electronic Science and Technology of China,University of Electronic Science and Technology of China |
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| Abstract: | For measuring insertion loss, reflection and radiation of smoke screen, a 3mm wave electromagnetic characteristic measurement radar is performed, which comprises a 3mm wave radar cross section (RCS) measurement radar and a 3mm wave radiometer. The transmitter and receiver of the former are separated, and each antenna of them can be chosen among three kinds of antennas with different beamwidth or gain, according to the sizes of object and the power of reflection signal. In order to fit the tremendous changes of power between transmission and reflection, the sensitivity and the dynamic range of the system is improved by millimeter wave fixed attenuator, switching between long range and short range, digital intermediate frequency (IF) receiver with signal accumulating by Fast Fourier Transform Algorithm (FFT). In the 3mm wave super-heterodyne IF Dicke-radiometer, hardware integral and soft integral are used to achieve high sensitivity. All the millimeter wave oscillators in the system are phase-locked, and the interval between two adjacent data is 2ms, which is suitable for suspending and movable smoke screen. |
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| Keywords: | 3mm wave Smoke screen Insertion loss RCS Radiometer |
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