Design and simulation of 0.22 THz stepped frequency radar system based on high power gyrotron
投稿时间:2020-02-01  修订日期:2020-09-05  download
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张成鑫 电子科技大学电子科学与工程学院 
鄢扬 电子科技大学电子科学与工程学院 
傅文杰 电子科技大学电子科学与工程学院  
Abstract:A stepped frequency imaging radar which based on 0.22THz high power gyrotron oscillator was designed. The dual Cassegrain antenna with separate transceiver was used for transmitting stepped frequency pulse signal. Frequency adjustment of gyrotron oscillator was achieved by adjusting gytrotron electron beam voltage or superconducting magnet strength. The design scheme of imaging radar was given, the radar detect range and high resolution range profile of the stepped frequency radar system were analyzed, and ISAR imaging simulation was carried out. The results of theoretical calculation and simulation show that the radar could detect the target with scattering area of 0.01 square meter by 1.982km and distinguish the targets with a distance of 2cm at 500m。The radar can be used for investigations on target recognition of small objects such as UAV which can take concealed weapons and threat material.
keywords:terahertz, stepped  frequency radar, ISAR, high  resolution, gyrotron  oscillator
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Copyright:《Journal of Infrared And Millimeter Waves》