YAG激光器泵灯聚光腔的改进

设计了一种改型的YAG激光器聚光腔，在椭圆柱反射面加入一玻璃套管，进行准全腔冷却，综合了传统的全腔冷却和分别冷却的优点，但灯、棒需向椭圆柱面伙线内作一位移。为此建立了光线传输的数学模型，经计算机编程运算，找出最佳的灯、棒配置，使灯轴发出的同心光束几乎同心地会聚于棒芯。     

Ray hit analysis method and its application to complex upper crustal structure survey

Introduction In the beginning of this century, along with the fast progress of seismic observation instru- ments in active source deep seismic sounding, the capability and efficiency for seismic data gath- ering has been greatly improved in China. In some key prospecting region, it takes comparatively short period today to collect artificial earthquake data with high densely covered receivers and shots, which makes it very practicable to probe into the fine crustal structures in complicated te…     

弱光时怎样准确计算日照时数

日出日落、云层遮挡或垂直能见度较差时 ,太阳光线较弱 ,照在日照纸上的迹线较淡 ,若不仔细分辨 ,很容易漏掉 ,但若把浸泡后的日照纸迎光而看 ,这部分迹线就可显而易见。弱光时怎样准确计算日照时数@李倩倩$孟津县气象局!河南孟津471100     

X射线脉冲星自主导航的光传播时间方程

详细讨论了X射线脉冲星自主导航系统的广义相对论效应,采用DSX体系的后牛顿近似方法,计算出1PN度规下的光线弯曲轨迹和时间延缓以及2PN度规下的引力延缓,得到X射线脉冲自主导航的高精度测量方程.     

The UV-absorbing compounds in gametophytic blades of Porphyra haitanensis and the effect on formation of sporangial branchlets of conchocelis

Endogenous levels of UVAC in different parts of matured gametophytic blades of Porphyra haitanensis and the effect of exogenous UVAC on sporangial branchlet formation are studied. The UVAC value in vegetative (36. 78 mg/g) and reproductive (29.25 mg/g) parts of female thallus is higher than their counterparts in male thallus (34.68 mg/g and 20.46 mg/g). The UVAC value of reproductive parts is higher than vegetative parts of same sexual thallus. The optimal UVAC concentration for sporangial branchlet formation is 0.1 mg/g.     

基于数字影像升采样的多相机统一相机参数的实现方法

提出了一种基于数字影像升采样的多相机统一相机参数的实现方法,即基于保持透视光线不变的原理,自主开发软件来自动实现同测区多相机统一参数处理,实现后处理中使用同一个数码相机参数,不进行分区简化处理。     

应用扫描光线重建法的建筑立面遮挡点云恢复

提出一种结合点云分割和扫描光线重建的建筑物立面遮挡部分点云恢复方法。该方法首先分割建筑面片,然后通过重建的扫描光线探测遮挡物点,并求其与建筑物面片的交点,从而在保持原始采样间隔的情况下自动恢复遮挡部分点云。试验结果表明,该方法能较好地恢复遮挡部位点云。