指向误差

另外，还对受天线指向误差影响的LEO卫星和MEO卫星的星间链路性能进行了分析。

Besides , the performance of LEO and MEO ISL affected by the pointing error is analyzed too .

为了降低指向误差和跟踪误差、保证大型射电望远镜在误差源干扰下的指向精度和跟踪精度，伺服控制系统采用LQG控制算法是一种比较理想的选择。

In conclude , the astronomical telescope adopts LQG Controller is an ideal choice to decrease pointing error and tracking error .

分布式卫星INSAR系统中天线指向误差分析

Error Analysis of Antenna Pointing Based on Distributed Satellites INSAR System

分析仿真结果表明，滚动向指向误差和稳定度以及星载SAR中心视角对分辨特性影响较大，该研究结果对于卫星总体参数确定和优化设计具有参考价值。

The simulation results prove that roll error and its stabilization and spaceborne SAR squint angle are the key factors to SAR resolution performance errors . The conclusion is valuable to determine and optimize the satellite system parameters .

建立南京大学65cm望远镜的指向误差修正模型，然后对其观测的指向误差值进行拟合，最后用拟合函数对观测进行指向修正。

By observing the positions of stars in different sky area , pointing errors could be recorded for each corresponding star and be fitted with the theoretical model , resulting in a final error correcting function , by which the telescope pointing is to be compensated for during observation .

轴仿真转台指向误差的建模研究

Research on model of pointing error of a three-axis simulation turntable

高信噪比大指向误差环境中的波束形成

Beamforming in the environments of high SNR and large steering error

卫星激光测距系统的机架指向误差的研究

Research on the Pointing Error of Telescope Mount in Slr System

佘山25米天线导轨问题对指向误差影响的研究

Research on the antenna pointing error of 25m Radio Telescope

卫星多波束天线指向误差对干扰源定位性能的影响

Influence on Performance of Interference Localization Using Satellite Multiple-Beam Antenna with Pointing Error

飞行仿真转台指向误差分析及误差分配

Pointing Error Analysis and Allocation for Flight Simulation Turntable

基于四元数的射电望远镜指向误差分析方法

Pointing Error Analysis of a Radio Telescope Using Quaternion

一种用于反辐射导弹的惯导轴指向误差的修正方法

A Method Used on Antiradiation Missile to Correct the Direction Error of the Inertial Axis

存在指向误差时的稳健自适应波束形成算法

Robust adaptive beamforming against pointing error

由于采用的跟踪算法具有实时更新性，该波束形成方法对时变信号的指向误差能产生一定的抑制。

For the character of updating with time , this algorithm can restrict the steering error .

天线罩波束指向误差

Beam pointing error of a radome

本文提出了光电经纬仪指向误差的最简公式。

In this paper , a most simple formula of directional error for photoelectric theodolite isadvanced .

提出了静态指向误差修正的两种模型，从原理上分析比较了两种模型的区别；

Two models are presented to correct static point error and the difference are compared from theory ;

在此基础上，给出了雷达天线各扫描时刻所产生的位置指向误差，并进行了仿真模拟。

The errors of scanning of shipboard radar antenna at each moment are then derived through simulation .

通过线性叠加得出激光发射系统指向误差的修正模型。

Furthermore , the undetermined coefficients in the laser pointing model were obtained by least square fitting .

极轴式天线最小指向误差理论分析及其工程应用

A theoretical analysis of the minimun directional error for the polar mounts antenna and its application in engineering

根据分析结果和系统设计中的误差分配可以提出对天线指向误差的限制。

The constraint condition of the antenna pointing error is provided according to error distributed in system design .

第二种方法不仅对阵列幅相误差具有稳健性，对指向误差也有很强的稳健性。

The second method is not only robust to the array complex gain error , but also to beam pointing error .

最后引入了指向误差分析，比较了这两种耦合方式的优劣，最终将放大器定为直接耦合抽运方式。

From the error analysis of LDA pointing , it is found out that the amplifier without micro-lens is more preferable .

阵元自由振荡频率的误差越小，阵元锁相带宽越大，波束指向误差越小；

Enlarging locking bandwidth and decreasing the control error of element free running frequency can make the beam pointing direction more accurate .

提出了一种针对指向误差、阵元位置误差或阵元相位误差的递归的稳健波束形成方法。

An approach is proposed for recursive robust beamforming in the presence of steering error , array geometry error and sensor phase error .

该方法由于采用迭代算法，避开矩阵求逆运算，因此运算复杂度较低，而且计算机仿真验证了该方法对指向误差、阵元位置误差和阵元相位误差具有良好的稳健性。

Simulations under a few scenarios in the presence of steering error , array geometry error and sensor phase error demonstrate that this algorithm has excellent robust performance .

结合电视跟踪系统所测量的激光束指向误差，采用最小二乘法拟合得出修正模型中各待定系数。

Finally , the TV tracking system whose optical axis was actually considered as an ideal one in the laser transmitter system was used to measure the laser pointing error .

计算机的仿真结果证明，基于导向矢量旋转的稳健算法在不明显增加算法运算量的基础上，有效的提高了算法对指向误差的鲁棒性。

The simulation results of the computer show the algorithm proposed by this paper is robust for the pointing error , but it do not increase the computation effort much . 2 .

移动补偿系统只使用其中一个轴向数据，由于南北指向误差远远小于东西指向，因此不对南北指向补偿。

Only one axis of the HASS data is used for motion compensation . The north-south pointing errors are significantly smaller then the east-west errors , and are not compensated for by the system .