pointing errors造句

• Complexation retitrate end point error margin probe into
  络合返滴定终点误差探讨
• Robust adaptive beamforming against pointing error
  存在指向误差时的稳健自适应波束形成算法
• Influence on performance of interference localization using satellite multiple - beam antenna with pointing error
  卫星多波束天线指向误差对干扰源定位性能的影响
• As long as the pointing error is no more than 1 or 2 percent of the main mirror ' s diameter , it makes no visible difference
  只要误差在主镜直径的百分之一或二以内，目视是觉察不到的。
• The parameters that influence the single photon acquisition probability are the transmitter ' s tracking - pointing error , the far - field divergence angle , the link distance between transmitter and receiver and the receiver ' s antenna aperture
  得到影响单光子捕获概率的主要参量是发射机的跟瞄误差、光束远场发散角、发射机和接收机的链路距离和接收机天线孔径。
• This method yielded very promising results on precision pointing tasks , and is also applicable to the slewing task . pointing errors of less than 0 . 05 degrees were achievable with off - line nominal control computation
  该算法用于飞行器的精点控制可获得满意的效果，也可用于完成飞行器的旋转控制任务，例如该算法用于飞行器的精点控制可使点误差小于0 . 05度。
• The antenna pointing control is open loop control without feedback . the antenna pointing errors due to antenna tracking motion and satellite attitude adjusting ( trusting ) were analyzed , as well as the influence of damping , tacking velocity and trusting time
  文章分析了天线作跟踪运动和星体作姿态调整时，对星体姿态控制精度和天线的指向精度影响，同时分析了阻尼、跟踪速度、喷气脉冲宽度等因素变化对动力耦合程度的影响。
• Secondly , the performance of the acousto - optic steering system is deteriorated as a result of the coupling because of nonlinear of quadrant detector and the pointing error introduced by satellite platform vibration . for this problem , this paper introduces the model reference adaptive control system , and presents the perfect model . the model reference adaptive controller is designed to force the output of the acousto - optic steering system following the output of the perfect model to improve the system performance
  其次,针对声光偏转系统由于器件的非线性造成的耦合和平台振动造成的指向误差导致系统性能恶化问题,引入了模型参考自适应控制系统,提出了理想的模型,设计了模型参考自适应控制器,强迫性能恶化的声光偏转系统的输出跟随理想模型的输出,使其性能改善,利用超稳定性理论确定自适应参数以保证系统的稳定性。
• First , based on phased array antenna ' s mono - pulse goniometry and separate coordinate technology about phase control , the antenna beam pointing error formula , caused by phase quantization error , is derived from linear array and circular array to planar array and cylindrical array
  首先以单脉冲相控阵天线测角原理为基本理论出发点，利用相位控制的坐标分离技术，基于线阵、圆形阵等简单形式的相控阵天线，推导了平面阵、圆柱面阵等相控阵天线由相位量化误差引起的波束指向误差公式。
• The fifth chapter analyzes the fixed - point error of bp - based and normalized bp - based decoding algorithm , and gives the final simulation results of each decoding algorithm . with the simulation results and the considering the tradeoff between hardware complexity and error performance , some key parameters and finite precision analysis for the hardware implementation of ldpc decoder have been performed
  第五章对bp - based和normalizedbp - based算法进行了定点仿真,对ldpc译码器的关键参数、硬件实现中的定点量化与字长精度问题进行了深入的研究,给出了对译码器硬件实现具有参考意义的研究结果。
• 1550nm is chosen as the work wavelength , cassegrain transmitting - receiving antenna as the optical antenna of the system through the elucidation of how to choose the work wavelength and optical antenna of comm - unication system . the structure and theoretical design parameter of apt sub - system have been presented through the discussion of the optical signal power estimation of apt sub - system , beam divergence angle , pointing error , and error signal extraction . compared with existed optical wireless communication system , the design scheme proves applicable
  通过对通信系统工作波长选择、光学天线选择等阐述，选择了1550nm作为系统工作波长、卡塞格伦（ cassegrain ）收发合一天线作为系统光学天线；通过对apt子系统功率测算、束散角和瞄准误差、误差提取信号等的讨论，给出了apt子系统结构和理论设计指标，并将其与现有的光无线通信系统进行比较，说明该设计方案是可行的。