ID 原文 译文
7254 接着采用椭圆轨道线性化方程的方法计算预测弹道的误差,在目标预测弹道及拦截弹飞行性能的基础上建立预测命中点及其误差的计算方法; Then adopt the method of elliptical orbit linearized equation prediction error of the ballistic calculation, to predict ballistic target and interceptor flying performance is established on the basis of the impact point and its prediction error calculation method;
7255 然后采用均匀点火策略分析预测命中点精度对拦截弹中段飞行修正能力的影响,通过可信性理论计算得到拦截弹的末段修正能力; And then USES the homogeneous ignition strategy analysis forecasting impact point precision of interceptor midcourse flight correction ability, the influence of the interceptor is obtained by credibility theory calculation ability of terminal correction;
7256 最后通过仿真得到满足拦截弹中末段修正能力需求的低轨卫星的技术指标要求。 Finally meet interceptor is obtained by the simulation ability of terminal correction in Leo satellite technical indicators in line with the requirements.
7257 实际雷达目标的散射中心属性非常复杂,如不规则的几何结构、遮挡,均会增加散射中心精确建模的难度。 Actual radar target scattering center property is very complex, such as irregular geometry, shade, will increase the difficulty of the scattering center model accurately.
7258 现有的散射中心模型并未考虑这些实际问题,为了提高建模精度,需对现有模型进行合理修正。 Scattering center model does not take into account the actual problems existing, in order to improve the modeling accuracy, reasonable correction should be carried out on the existing model.
7259 对散射中心模型中的频率依赖项、不规则平面的反射、局部遮挡造成的散射强度变化问题,给出了具体的修正方法。 Frequency dependency of scattering center model, irregular plane of reflection, the scattering intensity change of local view, gives a specific method of correction.
7260 通过数值验证,证实了修正模型模拟复杂目标雷达散射截面起伏特性、雷达距离-方位图像以及时频像特征的精确性。 Was proved by numerical correction model to simulate the complex target radar scattering cross section rolling - bearing images, radar distance and accuracy of time-frequency like characteristics.
7261 为了实现快速精确的航空侦察图像目标分割,提出基于模糊Renyi熵和区域增长的分割方法。 In order to achieve the segmentation of aeronautical reconnaissance image target quickly and accurately, is put forward based on fuzzy Renyi entropy and region growing method.
7262 首先在Renyi最大熵分割的基础上,应用模糊隶属度函数,引入模糊Renyi熵,提高图像分割效果。 In Renyi first, on the basis of the maximum entropy segmentation, fuzzy membership function, introducing fuzzy Renyi entropy, improve the effect of image segmentation.
7263 然后为了获取种子点,提出了基于双金字塔和特征融合的显著性检测方法,并通过形态学重构开运算和区域极大值生成目标核心区域。 Then in order to obtain the seed point, is proposed based on the significance of double pyramid and feature fusion detection method, and through the morphological reconstruction operation and open area greatly value generation target core region.