雷达

As a new kind of radar system, its inherent superiority of quasi-continuous wave system attracts extensive attention of the radar community.

准连续波体制作为一种新型雷达体制以其固有的优越性引起雷达界广泛的关注。

Quasi-continuous wave radar has a bright future for application in the high-teeh war.It is at a premium in many countries based on its advantages and has become a hot spot inthe technical field of radar.

中断连续波雷达在未来的高技术战争条件下，具有广阔的应用前景，它以其固有的优点，近年来倍受世界各国的青睐，成为雷达技术研究领域的热点。

This thesis discussed the wave forms of the pseudo-random-code phase-coded quasi-continuous wave radar. Then studied the working process of its receiving system and analyzed its noise and clutter environment. This thesis constructed the simulation flow chart .

论文首先对伪码调相中断连续波雷达的信号波形进行分析，接著研究伪码调相中断连续波雷达数字化接收系统的工作过程及噪声与杂波环境，构建了接收系统的仿真模型。

This thesis discussed the wave forms of the pseudo-random-code phase-coded quasi-continuous wave radar. Then studied the working process of its receiving system and analyzed its noise and clutter environment. This thesis constructed the simulation flow chart .

论文首先对伪码调相中断连续波雷达的信号波形进行分析，接着研究伪码调相中断连续波雷达数字化接收系统的工作过程及噪声与杂波环境，构建了接收系统的仿真模型。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10～12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响，从反射信号能量角度出发，给出了入射脉冲上升时间与弛豫时间的关系；接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响，给出了RAM目标辐射和有关UWB信号设计的一般性结论；其次，对介电RAM的弛豫时间效应作了简单的分析，探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响；最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统，在微波暗室中对几种不同的RAM目标进行了测量，结果表明：其反射波形的基本规律与上述理论分析相一致；从各种不同目标回波的能量对比结果得出，涂覆RAM目标对冲激信号的吸收比15％带宽的正弦信号要小10～12dB，证实了RAM的非线性效应对回波的影响，也证实了冲激信号反隐身的潜力。

On the principle of geological radar and detection techniques, lining a different method to identify quality problems with the typical radar images, and made the tunnel disease treatment.

介绍了地质雷达工作原理和检测方法，提出了不同衬砌质量问题的识别方法与典型雷达图像，并提出隧道病害的处理方法。

The distributed fusion algorithm was applied to process the fusion tracks from local ATC center,and solve the problem of the poor quality of the track on the fusion edge.

为实现全国范围内的空中交通动态监视，必须将分布于全国各地的管制中心的雷达融合数据经通信线路传送到全国空情融合中心，常用的办法是进行动态雷达数据拼接，在拼接边界存在航迹平滑度差，航迹易跳变等问题。

We proposed the time-changed dynamic models of radar signals based on dynamic theory, and can analyze quality and quantity of the deinterleaving pulse train;(2) We proposed the algorithm to computer selfsimilarity exponent and detect successfully the object echo buried in noise according to self-similarity of noise and nonsimilarity of sine wave;(3) We also proposed a nonlinear dynamic filtering detection model.

1根据动力学理论，提出了雷达信号的时变动力学模型，利用这个模型可以对已经分选出来的雷达信号进行定性和定量分析；(2)提出了快速计算自相似性指数的算法，并利用噪声和正弦波分别具有自相似性和不具有自相似性的特点，成功地检测到淹没在噪声中的目标回波；(3)提出了一种非线性动力学滤波检测模型。

The multi-polarization radar method developed in recent years can deduce the feature and changing rule of COF in the ice sheet according to the variation of the reflecting power in different orientation, and determine the history of stain and stress in the ice sheet further. It′s important to understand the flow mechanism and dynamic course and explain the changing law of the ice sheet in the past, present and future.

近年发展起来的多极化雷达技术可根据不同方向雷达反射功率的变化推断冰盖内部冰晶组构特征和变化规律，进而推断冰盖内部应力应变历史，这对于理解冰流机制和动力过程以及解释冰盖过去、现在和未来的变化规律具有非常重要的作用。

GPR 3D data visualization, it can be shown as three-dimensional graphics, and its time-varying gain to do to show detected radar target position and shape of body.

详细说明：实现探地雷达三维数据的三维可视化显示，可以显示成三维图形，并对其做时变增益，显示雷达波探测到的目标体的位置和形状。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。