仰角

用MATLAB编写了计算接收天线方位角、仰角和极化角的程序；

Using MATLAB calculate azimuth , elevation and polarization angle .

采用相控阵天线的三坐标（3D）雷达是目前3D雷达中的主要品种，具有在仰角上进行电扫描能力的3D雷达已获得广泛应用。

3D radar with electronically scanned beam in elevation has been used widely for tactical applications .

研究了米波MIMO雷达的低仰角估计方法。

Low-angle estimation in VHF MIMO radar is researched .

硬X射线气球探测中方位、仰角驱动系统的改进

An improvement of the driver in the angle of azimuth and elevation for detection of hard X-ray in the balloon

相控阵雷达低仰角目标DOA估计的算法

An Estimation of Low-Elevation Target DOA in Phased Array Radar

RBN/DGPS系统中PRC精度及与卫星仰角的数学模型

Accuracy and Mathematic Model with Satellite Elevation of PRC in RBN / DGPS

研究轨道倾角、轨道高度、GPS天线仰角和轨道偏心率等因素对多普勒频率搜索范围的影响。

The orbital inclination , orbital altitude , elevation of GPS antenna and orbital eccentricity were researched as the influential factors to doppler range .

详细介绍了一种使用GPS设备来标定雷达方位和仰角的方法。该方法简便、快速、精确，广泛应用于雷达标定。

A simple , fast and precise method of adopting the GPS to calibrate radar azimuth and elevation is expatiated and widely applied in radar calibration .

针对低重频PD雷达对目标的发现概率计算过程中所遇到的问题，采用临界仰角法处理雷达的未知参数，将之合并为雷达系统特征常数。

The critical elevation method was adopted to deal with the unknown radar parameters , and combine those parameters into a radar character constant .

为了满足对新一代3D雷达的需求，采用在方位与仰角上进行电扫的相控阵天线有重要意义。

In order to satisfy the requirements to new tactical 3D radars , it is necessary to develop phased array antenna with electronically scanning capability both in elevation and in azimuth .

膜式水冷壁管屏平角、仰角MAG焊接工艺研究

Technique research on weldment face and root bend of membrane water-wall used MAG welding method

分析双CCD交汇测量系统中测量精度有效视场与基线长度、像机仰角和视场角三个参数之间的数学关系；

In dual-CCD non-orthogonal intersection measurement system , distance between two CCDs , elevation angle and viewing angle are three most important factors for final precision of outcomes .

成像场景尺寸取决于刈幅大小和仰角上的天线波束宽度，而SAR系统的成像分辨率是雷达系统带宽和天线波束宽度的函数。

Imaged scene size depends strongly on swath or antenna beamwidth in elevation while the imaging resolutions of a SAR system are functions of radar system bandwidth and antenna beamwidth .

但是，这种方法必须在同一仰角做两次PPI（平面位置显示）扫描，探测占用时间较多。

However , this method requires two PPI sans in the same elevation , so it takes more time .

VAD技术三种仰角策略反演风场的比较和应用

Study and Comparison of Three VAD Techniques of the Wind Retrieval of Single-Doppler Weather Radar Using Different Elevation Strategies

最后，分析了该雷达系统的威力、精度，并用MATLAB仿真了关键的低仰角测高性能，验证了整个方案的可行性和有效性。

Finally , the coverage and accuracy of the radar is analyzed , its low altitude height-detecting performance is simulated by MATLAB , and the feasibility and effectiveness of the whole scheme is also demonstrated .

再用修正的AR模型算法，不仅可以在此基础上进一步去掉这两种信号的相关性，而且能正确估计出目标和镜像的仰角。

Then the application of the modified AR model can not only reduce the coherence of the two signals further , but separate the elevations of the target and its image .

中、深源地震主压应力方向随深度增加由NW向逐渐变为NE向，主压应力P轴仰角平缓。

The principal compressive stress direction of the intermediate and deep-focus earthquakes varies from NW to NE gradually with the depth rising . The axis P elevations of principal compressive stress are gentle .

提取作物的外部形态特征：叶片颜色和仰角，在RGB和HIS颜色模型下，分析了土壤水分含量与各颜色分量、叶片仰角之间的相关性。

The correlations between the leaf color parameters , leaf elevation and water content of soil are anal - yzed under the RGB and HIS model .

分析表明：不同天线仰角间的G／T值可以换算，ΔG／T等于不同天线仰角下测量的背景冷空噪声功率之差。

Analysis indicates : the system G / T at different antenna elevation angles can be converted each other ,Δ G / T is equal to the difference of background cold sky noise power measured at different antenna elevation angles .

结论通过正面仰角45°二维照片，利用图像分析软件选取感兴趣区（RegionofInterest，ROI）测定鼻外形的特征点点距，以此来评价鼻外形的对称性是可行的方法。

Conclusion Using image analysis software to enclose region of interest for measuring the nasal profile and the specific distance of nasal form with two-dimension frontal view photographs , is a feasible method of evaluating the symmetry of nasal morphology .

发现在中强地震前，该地区小震综合机制解的P轴方位偏离平均值，向E或SE偏转，其仰角有增大的趋势，同时小震纵波（Pn和Pg）初动符号一致。

It is found that direction of the P axes drifted off average values and turned to E or SE , being accompanied by identified first motion mark of P n and P g waves of small earthquakes .

用UD分解改进EKF粒子滤波算法，并将其应用于基于星光仰角测量的探测器自主导航方案。

Using UD decomposing to modify EKF Particle filter was imported into the navigation scheme based on the measurement of elevation angle of star .

通过对MEMS加速度传感器的输出信号进行A/D采样，获得相应的数字信号，并将其送进单片机进行处理，实现对飞行器的仰角和倾角的高精度测量，最终得到飞行器的姿态信息。

When the output analog signals came from the MEMS accelerometers , sampling them into digital signals and processed them with MCU , then system could get the value of inclination and elevation angle with high precision .

然而对低俯仰角下的ISAR成像方法一直是一个难以圆满解决的难题，究其原因是雷达工作在低俯仰角时，回波数据会受到多径效应的干扰，成像效果大打折扣。

It is always a difficult resolved problem that ISAR images at low elevation angles , the reason of which is that imaging result will be interrupted by multipath effect .

然后分析波束调制对低俯仰角下ISAR成像的影响，这将会对抑制多径效应产生指导性的意义。

After that , we go on discussing the influence of beam modulation on ISAR imaging at low elevation angles , which will bring the important significance on multipath effect restraining .

WYCK统一测控系统的低仰角跟踪技术

Low Angle Tracking Techniques for WYCK System

然后应用DOWER反转矩阵原理求得VG的方位角，仰角，以及VG数值的大小。

At last we apply the principle of matrix inversion DOWER to get azimuth , elevation , and the value of the size of the VG .

在任何时间点，如果太阳仰角或是太阳方位角的错误或是动量向量的错误超过容忍度时，那麽ACS将会为了修正此问题而回到适当的模式。

At any point , if the sun elevation or sun azimuth errors or the momentum vector error exceeds tolerances , the ACS will return to an appropriate mode in order to correct the problem .

本文从减小功率通量密度损失，提高接收仰角要求出发，在理论上导出通信广播卫星的最佳轨位的数学模型，经微型计算机模拟，确定中国通信广播卫星的最佳轨位为104.25°E。

From the viewpoint of reducing the loss of power flux density and increasing receiving elevation angle , a mathematic model of the optimization location is given . The optimization location of the satellite of China is obtained to be east longitude 104.25 degrees with computer analog .