ID 原文 译文
13484 文中基于不同类型散射中心的方位特性,提出了一种简单有效的大角度成像数据复杂度缩减方法。 Based on the aspect dependences, this paper presents a simple and effective method to reduce the complexity of imaging data.
13485 通过分析和预估各散射中心的有效观测角度范围,仅选择有效观测范围之内的散射场数据用于后续成像。 The effective observation angle of each scattering center is analyzed and estimated, and only the scattered fields under the effective observation range are selected for imaging.
13486 该方法可以实现利用较少观测角下的散射回波数据获得与大角度成像结果相同的图像特征。 The image characteristic obtained by less observation angle is the same as the image characteristic obtained by wide-angle imaging.
13487 数值结果证实,弹头目标的数据压缩率可达到45%以上,飞机目标的压缩率则达到80%以上。 The numerical results show that the ratio of data reduction for the cone-shaped target is over 45%, and 80% for the airplane.
13488 本文的研究结果对于雷达成像仿真、雷达图像解译等具有参考意义。 The research results of this paper are of significance to the radar imaging and image characteristic recognition.
13489 针对飞行器目标在实际飞行过程中由于飞行姿态变化对目标电磁散射截面(radar cross section,RCS)的影响,提出了一种新的动态目标电磁散射建模方法。 In consideration of the influence of moving target to the target radar cross section(RCS), an exact RCS modeling method of moving target based on the measured data is proposed in this paper.
13490 首先,对飞行器目标精确建模问题,提出了利用激光扫描方法对真实目标进行外形扫描,再通过逆向重构技术得到目标精确几何外形。 Firstly, we use laser scanning method to build the precise geometric model of the real target.
13491 然后利用实际飞行过程中测试数据,将获取的目标相对于雷达视向角信息代入仿真程序中,使用一体化电磁散射计算软件对一定航路上运动目标进行仿真计算,消除飞行姿态扰动对仿真数据的影响,使动态目标电磁散射建模更加符合实际飞行情况。 Secondly, we extract the parameters of the target motion characteristics in the actual flight and use the attitude angle in simulated program. Finally, we develop integration software to calculate the electromagnetic scattering, and eliminate the effect of attitude angle variation to make simulated results coincide with actual situation.
13492 仿真结果表明,本文方法可快速、准确获取飞机目标动态RCS仿真结果,具有很好的工程应用价值。 The results show that it can obtain high accuracy results of aircraft dynamic RCS quickly, and have stronger applicability in engineering.
13493 为了更好地解译探地雷达(ground-penetrating radar, GPR)回波数据,建立了一种二维时域有限差分模型,用于模拟地下分层结构(混凝土层/粘土层)和多个埋藏目标(金属板/条、空洞、水/油管)的GPR探测。 In order to better interpret the echo data of ground-penetrating radar(GPR), a two-dimensional finite difference time domain model is established to simulate the GPR detection of underground layered structure(concrete/clay layer) and multiple buried targets(metal plate or strip, hole, water or oil pipe).