In order to efficiently improve the stability of the apparatus, a dual-optical detection circuit was adopted . to eliminate the multiple scattering effects on transmittance measurements, the range of the transmittance was limited to 70-100 % by adjusting the width of the light flow cell and changing the intensity of the incident light through regulating the load voltage of the laser light source . moreover, the data acquisition software was programmed in microsoft visual bas 通过调节激光光源负载电压改变光强度及调摘要整检测池的宽度,消除了多重散射对透光率的影响,将透光率的变化范围控制在满足beer1a毗ert定律的范围内工将温度、溶液密度和透光率信号经模数转换,并用microsoftvisualbasic语言编写的数据采集软件,实现了实验过程中各被测量的自动连续采集。
An idea to establish a cancellation database on the basis of the smooth of rcs of the protected target is also introduced the field scattered by facets and fringes and the multiple scattering effect are calculated by a hybridization of the theory of physical optics, equivalent currents and areal projection-physical optics, which are utilized to compute the rcs of an aeroplane 还提出了根据被保护目标rcs的平滑值确定对消数据库的思想。应用物理光学法、等效电磁流法和区域投影物理光学方法计算了面元散射场、劈边缘绕射场以及多次散射场,采用此方法计算了某飞机的rcs,并对该目标的rcs进行了平滑处理。