In the analysis of the frequent spectrum and the reflection coefficients , based on goda ' s two - points method which fit to the normal incident wave , a modified two - points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular , the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed , also from which in theory the waves could be measured in two wave gauges which is disposed at any direction 为了分析单向不规则波入射波的频率谱和反射系数，本文在goda用于分析正向不规则波的两点法的基础上，提出了可用于斜向不规则波频谱分离及其反射系数计算的改进两点法，该方法可用于计算任意波浪入射角的入、反射波谱、总体反射系数和反射系数的频率谱，并且测量波浪过程的两浪高仪可在较广的方向范围内布置。
The radiation patterns at different scan angle from - 20 to 20 degree are presented , and the angle difference between the maximum / minimum field points of their main beam shows the bse of the radome . at different frequencies , the radiation from the antenna has been discussed when azimuth scan angle ranges between - 20 degree and 20 degree . the relationship between 200 ~ 200范围内天线的和方向远区场、方位差方向远区场;得到方位瞄准误差、瞄准误差斜率和功率传输系数随扫描角和入射波频率的变化关系;并将所得数据与文献数据进行比较,表明间接射线法简单、有效且精度较高。
With the increase of variance , the difference in h - polarized or v - polarized incident wave and in the different mean cross sections is becoming gradually small until when the variance is infinity namely the rotatory axes of the group are uniformly oriented : at this time the different mean cross sections are independent of the polarized status of incident wave 随着方差的增大，入射波水平偏振和垂直偏振时的各平均截面的差异逐渐减小，减小到直至方差为无穷大时，即与粒子群取向的均匀分布的情况相同，此时各平均截面与入射波的偏振状态无关。
The calculation of dynamic response under the loading of incident pulses with different rising - time shows that the oscillation of stress wave reflects the macro - heterogeneity of laminated materials , and that the oscillation becomes more distinct as the rising - time becomes steeper . for the periodical laminate , the oscillation period of stress wave depends on the width of each cell and the width of the whole representative cell 针对两种不同上升沿入射波加载时的计算表明，应力波的振荡现象反映了材料的分层非均匀特性，上升沿越陡，振荡越明显；对于周期性分层材料，应力波的振荡周期与各层的厚度以及周期性代表单元的总厚度是相关的。
