<trans-title>Design and simulation of 0.22 THz stepped frequency radar system based on high power gyrotron</trans-title>

Cheng-Xin ZHANG; Yang YAN; Wen-Jie FU

doi:10.11972/j.issn.1001-9014.2020.06.010

Journal of Infrared and Millimeter Waves, Volume. 39, Issue 6, 728(2020)

Design and simulation of 0.22 THz stepped frequency radar system based on high power gyrotron

Cheng-Xin ZHANG^1,2, Yang YAN^1、*, and Wen-Jie FU¹

¹School of Electronic Science and Engineering （ National Exemplary School of Microelectronics ）， University of Electronic Science and Technology， Chengdu610054， China

²Institute of Applied Electronics， China Academy of Engineering Physics， Mianyang621900， China

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Figures & Tables(8)

Fig. 1. Diagram of 0.22 THz stepped frequency radar TR module

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Fig. 2. Radar transmitted power versus objected distance

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Fig. 3. Radar minimum detectable signal-to-noise ratio versus objected distance

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Fig. 4. High resolution ranged profile of point target

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Fig. 5. Velocity influences on the high resolution range profile

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Fig. 6. Influence of different velocities on the high resolution range profile

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Fig. 7. Result of simulation for ISAR imaging system (a) point target, (b)point target imaging result, (c)four rotor aircraft model, (d)four rotor aircraft model imaging result

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Table 1. 0.22 THz步进频率雷达设计参数

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Table 1. 0.22 THz步进频率雷达设计参数

参数	数值
频率范围	0.214~0.226 THz
发射信号功率（ $P_{t}$ ）	20 kW
发射信号宽度（ $τ$ ）	2 $μ s$
雷达系统损耗（ $L_{d}$ ）	5 dB
大气衰减系数（ $L_{s}$ ）	3.2 dB/km
发射天线增益( $G_{t}$ )	50 dBi
接收天线增益( $G_{r}$ )	50 dBi
接收机噪声系数( $F_{N}$ )	15 dB
最小可检测信噪比( $(R_{S N})_{O, m i n}$ )	16 dB
工作温度( $T_{e}$ )	300 K
工作波长( $λ$ )	1.4 mm
玻尔兹曼常数（k）	1.38×10^-23 J/K

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Cheng-Xin ZHANG, Yang YAN, Wen-Jie FU. Design and simulation of 0.22 THz stepped frequency radar system based on high power gyrotron[J]. Journal of Infrared and Millimeter Waves, 2020, 39(6): 728

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Paper Information

Category: Millimeter Wave and Terahertz Technology

Received: Feb. 1, 2020

Accepted: --

Published Online: Jan. 20, 2021

The Author Email: Yang YAN (fuwenjie@uestc.edu.cn)

DOI:10.11972/j.issn.1001-9014.2020.06.010

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