In order to simulate the real radar clutter environment, the use of zero-memory nonlinear transformation method of Rayleigh, log-normal distribution, K-distribution and the Weibull distribution where the clutter of different simulation and put forward A one-dimensional approach will be extended to a clutter sequence of two-dimensional sequence, a two-dimensional simulation of the peak to clutter Doppler frequency and space with the correct move frequency.
为了模拟真实环境中的雷达杂波，使用零记忆非线性变换法对瑞利、对数正态分布、K-分布和韦布尔式中不同分布的杂波进行了仿真，并且提出一种方法将一维杂波序列扩展到了二维序列，仿真出的二维杂波的峰值能够随着多普勒频率和空间频率正确移动。
This chapter gives a deeply and completely introduce ofdual-linear polarization weather Doppler radar system in this fields.
对EVM6701 的外部存储器接口和DSPLINK2 接口作了详细的介绍，并结合该接口和EVM6701 评估板设计了一个高速的接口转换电路，完成信号处理系统的设计。
Integrated analysis of 7 times heavy rain in Yunnan from July 19 to August 2 based on actual observation weather datum and satellite cloud atlas and Doppler radar image. The results show that: high-low southwest jet stream is important effect system. The maintenance of southwest jet stream provides water vapor, momentum, fast transfer of unstable energy for the lasting heavy rain. The further configuration of plateau shear line and southwest jet stream is necessarily condition about 7 times heavy rain. The lasting heavy rain appeared on big value region of 500hPa vapour flux and vapour flux divergence. The shear cloud band and subtropical high cloud band crossed and confluenced in Yunnan on the satellite cloud atlas. The maintenance and intensification of shear cloud hand and periphery cloud band of subtropical high correspond quite well to heavy rain falling region and cloud band distribution.
应用实测气象资料，结合卫星云图与多普勒雷达图像分析，对2007年7月19日到8月2日云南少有的7次强降水过程进行综合分析，结果表明：高低空的西南急流是重要的影响系统，西南急流的维持为持续性强降水过程提供了水汽、动量和不稳定能量的快速传递，高原切变线与西南急流的有利配置，是7次持续性强降水过程必不可少的条件；持续性强降水出现在500hPa水汽通量大值区和水汽通量散度辐合区；卫星云图上切变云带和副高外围云带在云南汇合，切变云带和副高外围云带维持、加强的过程与强降水落区的时空分布对应较好。
Focused on the probing theory and based on field observation data, an intensive study of bistatic Doppler weather radar has been done.
双基地雷达探测范围远小于常规多普勒天气雷达，其较大回波区域在基线附近和被动雷达一侧的基线延长线周围。
It is very important to transmit Doppler radar data from radar station to farther provincial bureau and provincial observatory and make them using the data promptly, because the data are rich and big.
多普勒雷达回波资料丰富且数据量大，为了使距离雷达站较远的省局和省台等都能及时的使用雷达资料，雷达传输非常重要。
At first the basic conception of PRC-CW is given, then a Doppler pretreatment method is given. Through utilizing the shift multiplication characteristics of m series, this kind of radar system eliminates the bad effect of Doppler frequency on the performance of correlation at the little price of signal-to-noise ratio reduction efficiently. In theory, the Doppler tolerance of the radar system can reach the half of the code rate with proposed echo pretreatment method in this paper.
首先介绍了m序列编码基本理论，然后给出了m序列调相连续波雷达多普勒预处理的方法，该方法充分利用m序列移位相乘后仍为m序列的优良特性进行回波预处理来消除多普勒频移对相关性能的影响，使得即使在出现大多普勒频率情况下雷达相关器输出的主旁瓣比仍可以达到理论值，从理论上说，应用于该雷达系统的信号处理方法可以使得雷达系统的多普勒容限达到伪码子码重复频率的一半，从而使伪码调相雷达可以有效地应用于高速超高速目标的搜索和跟踪。
The results can be used as reference for the structural design of mobile doppler weather radar system.
可以作为机动式雷达结构设计的参考。
A largescale heavy rainfall process occurred in North China on 25 April 2004 is analyzed, and the methods of using Doppler weather radar radial velocity PPI and vertical velocity profile are introduced. Based on the two radar products, the situation of cold and thermal advection, convergence and divergence at different altitudes can be identified comprehensively and then either ascending or descending air can be identified, so to deduce the occurrence of rainfall.
对2004年4月25日出现在华北的一次大范围较强降雨过程进行了分析，介绍了多普勒天气雷达径向速度PPI图像和垂直风廓线产品的应用技术，根据这两种产品可以判断冷，暖平流，以及各个高度层风的辐合，辐散，综合这些特征进一步判断气流上升或下沉，从而可以推断降水的生消。
Active homing guidance system mostly adopts the pulse Doppler system. Therefore, research has important significance for radar seeker simulation.
主动寻的制导系统大多采用脉冲多普勒体制，因此研究该类型雷达导引头仿真具有重要意义。
It is important to advance performance of the airborne pulse Doppler radar detecting the targets with low radial velocity.
对低径向速度目标的检测能力是衡量机载脉冲多普勒雷达性能的一项重要指标。
The non-orbit target tracking needs large-scale tracking net. The tracking devices include large-scale ranging and doppler radar, optical theodolite etc. Such system is so large that its Cost of construction and maintenance is high.
非轨道飞行器跟踪需要大型的跟踪网，跟踪设备包括大型测距、测速雷达，光学经纬仪等，系统庞大，建设、维护成本高。
The system uses striped cosine and v calibrated lumen sensor bands installed on a vehicle to scan dynamically the luminous section of the airfield visual aid light within the level surface. The vehicle also has a Doppler ranging radar to measure the distance between the vehicle and lights, so it can compute the lighting intensity and then obtain the isocandela curve.
系统采用安装在车体上的经余弦校正和v校正的条形照度传感带在水平面内动态扫描助航灯光发光截面，利用车载多普勒测距雷达测量距离，计算相应的光强值，并进而获得等光强图。
In order to identify the cloud condition at the located meteorological station rapidly and accurately at night, Relying on detection apparatuses, the paper introduces the application usage of the apparatuses in assisting cloud observation by applying various materials such as data of meteorological radiation, data of atmospheric electric field, data of meteorological satellite cloud picture and data of Doppler weather radar echo, which better covers the shortage in night-time cloud observation by eye survey.
为了能够在夜间快速准确的识别所在测站云状，本文以现代化探测设备为手段，对夜间云的观测方法进行了总结，介绍了如何应用现代化探测设备的气象辐射、大气电场、气象卫星云图、多普勒天气雷达回波资料来辅助观云，较好的弥补依靠目测夜间观测云的不足。
By using the routine meteorological data and doppler radar products and so on, a meteorological analysis of this process has been done, the analysis shows that: this is a typical continuous severe thunderstorm process in Ningxia which resulted from the rotational eastwards and southwards Mongolia cold vortex.
利用常规气象资料、多普勒雷达产品等资料，对此次过程进行了天气学分析，分析表明这是一次典型的蒙古冷涡旋转东移南压造成的宁夏连续性强对流天气过程。
Based on conventional observation, automatic weather station, doppler redar and NCEP 1°×1° data, a heavy rainstorm process which occurred from August 10 to August 12, 2007, Zhuanghe region was analyzed with radar echo and physical vector diagnostic analysis methods.
本文采用常规资料、自动站资料、多普勒雷达资料和NCEP每6h一次，1°×1°的实时分析资料，对2007年8月10～12日庄河地区出现的一次大暴雨天气过程进行雷达回波和诊断分析。
The composition and drive type of TQ pulse doppler weather radar antenna rotating pedestal are introduced in this paper.
介绍了TQ型脉冲多普勒天气雷达天线转台的组成和传动型式，对转台中的双摇杆机构和波导铰链作了分析，提出俯仰驱动装置装配中需要注意的问题。
Doppler radar; EVAD technique; MGS method; variational method; vertical air velocity
多普勒雷达； EVAD技术； MGS法；变分法；大气垂直速度
Heavy snowfall Doppler radar data meso-scale inverse shear EVAD technique
大雪；多普勒雷达资料；中尺度逆切变； EVAD技术
In the paper, a coherent video signal simulation is applied to model and simulate a pulse Doppler radar seeker.
本文采用相干视频信号仿真方法对脉冲多普勒雷达导引头进行了建模和仿真研究。
From the Doppler frequency can be extracted from the main message is one of the radar and the distance between the target rate of change
从多普勒频率中可提取的主要信息之一是雷达与目标之间的距离变化率。