论文部分内容阅读
准平面波辐射下的背景材料太赫兹后向散射特性的测量方法对测量结果影响很大。为减小连续激光器输出功率波动对测量结果的影响,在每次测量泡沫塑料板时,均先测量墙的后向散射。同时,为了消除墙对测量结果的影响,以最大后向散射为基准,给出不同泡沫塑料板及同种背景材料转动不同方位角的相对后向散射强度。实验结果显示,三种泡沫塑料板相对墙的散射测量误差明显降低,从而提高了后续的相对后向散射强度测量的准确性。
The measurement method of the terahertz backscattering property of the background material under the quasi-plane wave radiation has a great influence on the measurement result. To reduce the impact of continuous laser output power fluctuations on the measurement results, wall backscatter was measured at each measurement of the foam board. At the same time, in order to eliminate the influence of the wall on the measurement results, the relative backscattering intensities of different foam plates and the same background material at different azimuth angles are given based on the maximum backscattering. The experimental results show that the relative errors of the three foam panels relative to the wall are significantly reduced, thereby improving the accuracy of subsequent relative backscatter measurements.