查询词典 azimuth

Center frequency of the system is 280MHz with a bandwidth of 10MHz. The sample frequency is 2GS/s. The system shows the lightning VHF source in 2-D, and the error for azimuth is less than 1 and 3 for elevation.

系统能够给出闪电VHF辐射源的仰角和方位角二维发展图像，对方位角的测量精度大于仰角，从标定结果来看，系统对方位角的测量误差在1度以下，而对仰角的测量精度随着仰角的减小而降低，对所分析的高仰角闪电，仰角误差一般不超过3度。

The conclusion is that the probability of ESM-radar track false association can be decrease by 1 decreasing the ratio of azimuth measurement error of radar with that of ESM, and 2 increasing measurement times.

最后，由错误关联概率曲线得出了采取减小雷达航迹测量误差与ESM航迹测量误差比值和增加测量次数等措施可以减小错误关联概率的结论。

The result indicates, under the condition of big initial error and shell"s high speed rolling, after 60 seconds" flight alignment, the error of azimuth angle and attitude angle can be decreased to no more than 10 angle second, and the position and velocity error has been corrected. This shows the effective of our designed arithmetic.

研究结果表明：在初始误差较大、弹体高速旋转的条件下，经过60秒的空中对准，三个姿态角误差可降至10个角秒以下，同时位置和速度误差得到了修正，从而验证了算法的有效性。

Moreover, the accuracy analysis for different measurements and parameters(such as time measure error, azimuth measure error, buoys error, baseline length and sound velocity fluctuation) are given respectively. To make the best use of the observation datas, the weighted least square localization algorithm is used to improve the accuracy in bistatic sonar. The simulation results show that the positioning accuracy of this algorithm is higher than the other four algorithms, with which the positioning accuracy in stations areas and side areas can be improved effectively.

同时，通过对系统各个因素，如系统的各观测量的测量误差、站址误差、基线长度、声速波动等参数对算法性能的影响，得出了各方法定位误差的分布规律；为了充分利用双基地声纳系统的观测数据，提高系统的定位精度，采用加权最小二乘方法对系统的数据进行优化处理，仿真结果表明该方法定位精度明显高于基本方法的定位精度，能有效的改善发射站和接受站侧边区的定位精度，且定位性能受站址测量误差的影响较小。

In order to evaluate aiming error of missile on the warship or on the submarine, including the error of warship position, the error of reference azimuth and the error of transfer measurement given by the navigation system, and try to divided them from the general error, it is highly important that we estimate and evaluate missile system of mobile bedding launching.

为了评估从舰船／潜艇上发射导弹的瞄准误差，包括舰船导航系统给定的船位误差、基准方位误差及其传递测量误差，并试图把它们从总的瞄准误差中分离出来，这对于动基座发射导弹武器的瞄准精度的评价极为重要。

An improved UKF method is proposed and applied to the nonlinear initial alignment of SINS on the stationary base. Simulation results illustrate that the given method has a better performance in the estimation of the azimuth error than the EKF, traditional UKF and scaled SSUKF does. Based on the dynamic error equations of SINS, the mathematics model of the IMU/GPS integrated navigation system is derived for Kalman filtering.

此外，论文还分析和研究了捷联惯性导航系统的力学方程编排和惯性仪表的误差，建立了IMU/GPS组合导航系统的状态方程和量测方程，设计和开发了用于机载SAR运动补偿的组合导航实验系统，并对设计的组合系统进行了大量的静态实验和车载实验。

Simulation results indicate that the drift of up gyro and the initial error of azimuth angle have significant effect on the positioning precision, however, compared with the drift of up gyro, the drifts of east and north gyros have less effect on the positioning precision.

第二，详细分析了东、北、天三个方向的陀螺漂移及初始方位误差角对SINS/里程仪组合系统定位精度的影响。

It accomplishes the measuration of the tracking error of radar such as the azimuth angle error, the high-low angle error, the ranging error, etc.

当与计算机组成采集系统时，可以在计算机上实现误差结果计算、数据分析、存储及打印等更强大的功能。

The equation of ESCDAC is presented. Secondly, Based on this equation and the independent characteristic of observation valves, the ESR of the azimuth measurement error is presented by full - difference of the measurement equation which acts as the precision of ESCDAC.

然后以该方程为基础，根据该方程中各个观测量相互独立的特点，方位测量误差的均方根值可由测向方程的全微分求得，并将其作为电扫描恒差比幅测向的精度，由该精度公式可以看出，电扫描恒差比幅测向有很高的精度，并且在不同的角度上，其精度保持稳定。

The tilt of the base surrounding the axis vertical to the FOG axis induces the same grade error on azimuth and the orientation accuracy is degraded extremely.

基座平面绕垂直于陀螺轴的倾角将直接引起一个同样量级的方位角测量误差，从而在较大程度上影响寻北精度。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。