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- Classically there are two distinct energy ranges. 根据经典的观点，存在两个显著不同的能置区域。
- In this pape r, the formation principle of radar target range profile is analyzed at first. 首先分析了雷达目标一维距离像形成原理。
- MMW high resolution radar range profile two-step stretch processing method direct digital synthesis （DDS）. 标 签 毫米波高分辨雷达 距离像 双脉冲伸缩处理 直接数字合成(DDS).
- The motion compensation factor for the bistatic range profile of a moving target is also proposed. 分析了对多散射中心目标的双基地距离像与单基地距离像之间的关系,最后对双基地距离像进行了仿真。
- Jin Yan.High Resolution Range Profile Statistical Property Analysis of Radar Target[C].Proceedings of IEEE 2002 ICSP:1 469-1 472. 邢孟道;保铮.;飞机目标的一维距离像特性[J]
- T hen we analyze the target scattering center model, angle movement model and the simulation of radar target range profile based on these models. 并具体分析了目标的散射中心模型、角运动模型及根据这些模型进行目标一维距离像仿真的方法。
- Dry seeds of Arabidopsis thaliana were irradiated with F ions and H ions with the energy range from keV to MeV, respectively. 利用不同能量的F离子和H离子分别辐照拟南芥干种子,通过种子发芽率实验研究了低能离子生物效应与离子种类、离子能量和辐照注量之间的关系。
- Zhou D Y,Shen X F,Yang W L.Unknown target discrimination using range profile of radar target[J].Chinese Journal of Radio Science,2002,17 (2):147-150. [2]周代英;沈晓峰;杨万麟.;雷达目标一维距离像识别中的非训练目标判别[J]
- How to extract effective discriminant features is the key problem for radar automatic target recognition based on high resolution range profile (HRRP). 摘要抽取有效鉴别特征是雷达一维高分辨距离像识别的关键。
- Based on the idea of subspace projection, an optimal kernel discriminant analysis (OKDA) is given and used to extract features from a range profile. 核判别分析(KDA)是一种抽取非线性特征的有效方法，但它会因为奇异性问题而难以求解。
- Owing to the phenomenon of "target splitting" of multi-scatter motion target range profile of the stepped frequency signal, it brings difficulties in target identification. 频率步进信号对运动的多散射体目标成像时会出现“目标分裂”现象,给目标识别带来困难。
- Inverse Synthetic Aperture Radar (ISAR) is a kind of high range profile radar.It can be used for radar imaging such as aircraft and space objects and other targets. 逆合成孔径雷达(ISAR)是一种高分辨成像雷达，它可以实际用于对诸如飞机和空间物体等目标进行成像。
- MCP (microchannel plates) photoelectric imaging device is used for ICF experiment in our country, for the first time. The problem of hard x-ray background is solved in the experiment, in addition to the extent of subkilovolt energy range. 在国内,首次将MCP(微通道板)光电成像器件应用于激光聚变实验,将X射线测量能区扩展到亚千电子伏范围。
- Spectroscopy of rare earth ions including the 4f 4f transitions, 4f 5d transitions, 4f 6s transitions, host absorption and charge transfer band in the energy range higher than 50000 cm -1 was reported. 讨论了稀土离子在能量高于 5 0 0 0 0cm- 1 (波长短于 2 0 0nm)的光谱 ,包括 4f 4f跃迁 ,4f 5d跃迁 ,4f 6s跃迁 ,基质吸收和电荷迁移带。
- The Monte Carlo techniques can transport charged particles and photons from a few keV to GeV energy range in arbitrary three dimensional complex geometry systems and in heterogeneous media. 我们可将质子能量设定在肿瘤处释放出来杀死癌细胞，而不破坏周围的重要组织。
- Radar High-Resolution Range Profile (HRRP) is very sensitive to time-shift;therefore, HRRP-based Radar Automatic Target Recognition (RATR) requires efficient time-shift invariant features. 针对雷达自动目标识别(RATR)中高分辨距离像(HRRP)的平移敏感性，从HRRP中提取出一种新的距离像平移不变特征：距离像幅度谱差分。
- Aiming at the problem of poor performance of radar High Resolution Range Profile (HRRP) under low SNR, a method is proposed which uses wavelet to denoise the radar signal for enhancing FIRRP. 摘要针对低信噪比情况下目标的雷达一维距离像性能较差的问题，提出利用小波去噪以增强目标一维距离像的方法。
- For the target recognition based on radar high-resolution range profile (HRRP), the removing of shift sensitivity and compressing of feature dimension have important meaning in realistic. 在基于雷达高分辨距离像(HRRP)的目标识别中，平移敏感性的消除及特征维数的压缩在实际应用中有着重要意义。
- For the polarimetric and high-resolution radar system, a novel method is proposed, where the polarization and high resolution range profile are integrated for radar target recognition. 在全极化、高分辨雷达体制背景下，提出一种将极化信息与高分辨距离像相结合的雷达目标统计识别方法。
- Experiments were carried out with EMI photomultiplier tubes (9815B and 9850B) at 5SDH-2 accelerator and the responses to neutrons with neutron energy ranging between 0.5 MeV and 5 MeV were obtained. 在5SDH-2小串列加速器上，选用9815B和9850B两种光电倍增管进行实验，得到了光电倍增管的中子直照灵敏度能谱响应曲线。
