查询词典 navigation radar

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。

In order to make the process of rain increasing by roct more precise and more efficient by means of determining the objective according to data,it is advisab e to link TWR01 radar,714CD radar truck-mounted type WR-1B rocket launch work spot and the work control center by applying synthetically computer network optical fiber GPS wireless communication techology,and to form a rain increasing work direction system,which can enhance scientific levels of the direction and the spot work in rain increasing.

为了细化火箭增雨作业过程，依据数据确定目标有效实施增雨作业，通过综合运用计算机网络光纤GPS无线通信技术链接TWR01雷达、714CD雷达车载式WR—1B火箭发射作业点、作业指挥中心，形成增雨指挥作业系统，提高了人工增雨科学指挥、科学作业水平。TWR01雷达计算机系统自动解算出火箭发射装置的作业参数，GPS确定火箭作业地点，增强了火箭发射地点、方位、仰角、高度、行程等作业数据的准确性和科学性。

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。

Based on radar backscatter theory and scattering point model,a universal theoretical radar echo model of circle rotation scattering point on arbitrary plane was derived and established,and the equivalence of this model to the one of vibration scattering point was discussed.

基于雷达后向散射理论和散射点模型，针对雷达目标的任意圆周旋转散射点，详细推导并建立了雷达回波通用模型，对其与振动散射点的等效性进行了详细的讨论。

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。

This article mainly carries on the analysis with new weather radar data characteristic in this rainfall process. With the analysis of the reflection factor, the wind profile and the rainfall estimation, we know that the strong wind vertical change and sufficient water vapor condition have the extremely vital role to the development and the maintenance of the convection storm; The new weather radar has the very good instruction function to the weather forecast, specially at the rainfall estimated and in the catastrophe weather forecast and the short-time forecast.

本文主要对这次降水过程中的新一代天气雷达资料特征进行分析，通过对反射率因子、风廓线和降水估测等主要产品的分析，表明较强的风的垂直切变、充足的水汽条件对对流风暴的发展和维持有非常重要的作用；新一代天气雷达对气象预报工作有很好的指导作用，特别在降水估计、灾害性天气预报和短时临近预报中有非常重要的意义。

First, this paper research and analyze the feature of signal of pulse Doppler radar, and the mathematic model of radar is constructed.

研究和分析捷变频雷达的信号特征，建立了该种雷达的数学模型，得出了对捷变频雷达的最佳干扰模式，并进行了干扰性能的评估。

The doppler radar simulator is used to analyze and validate the problem of one radar velocity measurement system.

中文摘要：设计的多普勒雷达目标模拟器用于分析、验证某型号雷达测速系统存在的技术问题。

Firstly, we introduce the development of the Pulsed Doppler radar and the basic structure of PD radar signal processing system and their function of each subsystem.

首先简要介绍了脉冲多普勒雷达的发展概况，以及信号处理系统的基本构成和各部分的主要功能。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。