CAJ | 학술논문

以研究太赫兹雷达散射截面的特性为目的，选用所搭建低频太赫兹雷达测试系统，并借助于标准目标法开展了有关太赫兹雷达粗糙铝盘散射截面的实验研究工作。实验结果表明：在小角度散射中太赫兹雷达散射截面随散射角的增大变化比较明显，在散射角超过5°后太赫兹雷达散射截面随散射角的变化趋向缓慢，但当散射角超过12°后探测信号的强度已衰减到无法测量，在太赫兹雷达散射截面的测试中没有出现微波雷达散射截面的大小随散射角的变化而剧烈振荡的现象；将测试结果与同尺寸微波、激光雷达散射截面的结果进行了对比，得到结论：在0°附近太赫兹雷达散射截面的数值比同尺寸微波雷达散射截面的数值要小两个数量级，但比同尺寸激光雷达散射截面的数值要高一个数量级。
이연구태혁자뢰체산사절면적특성위목적，선용소탑건저빈태혁자뢰체측시계통，병차조우표준목표법개전료유관태혁자뢰체조조려반산사절면적실험연구공작。실험결과표명：재소각도산사중태혁자뢰체산사절면수산사각적증대변화비교명현，재산사각초과5°후태혁자뢰체산사절면수산사각적변화추향완만，단당산사각초과12°후탐측신호적강도이쇠감도무법측량，재태혁자뢰체산사절면적측시중몰유출현미파뢰체산사절면적대소수산사각적변화이극렬진탕적현상；장측시결과여동척촌미파、격광뢰체산사절면적결과진행료대비，득도결론：재0°부근태혁자뢰체산사절면적수치비동척촌미파뢰체산사절면적수치요소량개수량급，단비동척촌격광뢰체산사절면적수치요고일개수량급。
For study the characteristics of terahertz radar scattering cross section, by building a low-frequency terahertz radar test system, and with the help of standard target method, experiments and research work about terahertz radar scattering cross section of rough aluminum plate were carried out. The experimental results show that: In the small angle scattering, terahertz radar scattering cross section changes much obviously with the increase of the scattering angle; But when the scattering angle is more than 5° , terahertz radar scattering cross section varies with the scattering angle tends to be slow; And when the scattering angle is more than 12°, the detection signal strength attenuation cannot be measured. The phenomenon that microwave radar scattering cross section size changes with the angle of scattering while acuteness oscillation does not appear in the testing of terahertz radar scattering cross section. Comparison of the test results with the same size of microwave and laser radar cross section, it can be the concluded:In the vicinity of 0° , the magnitude of terahertz radar scattering cross section is two orders lower than the same size microwave radar scattering cross section, but is an order higher than the same size laser radar scattering cross section.