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- Otherwise, if the power levels of the similar carriers at both satellites are quite close, it may be caused by the antenna pointing error, or by an uplink antenna with ultra small aperture. 如果相似载波的电平差不大,则有可能是干扰站出现天线指向偏差,或者使用了过小口径的上行天线。
- antenna pointing error 天线指向误差
- Before the polarization angle adjustment, the antenna pointing may need to be adjusted in advance. 极化角调整前可能需要调整天线的对星指向。
- The 16-bits single-chip computer (89C196KC) and resolver are used to realize the position servo control of antenna pointing system. 系统采用89C196KC单片机和多极旋转变压器实现了卫星天线指向系统的位置伺服控制。
- Analysis for pointing error of three-axis photoelectric theodolite with collimation axis eccentricity[J]. 引用该论文 徐征峰;陈洪斌;刘顺发;曹雷.
- The stability of antenna pointing is researched from the viewpoint of the effects of antenna pointing instability of spaceborne synthetic aperture radar (SAR) on image quality. 摘要从星载合成孔径雷达(SAR)天线指向不稳定对成像质量影响的角度研究天线指向稳定度。
- The formula can be used to calculate the end point error of both complicated redox reactions and simple ones. 根据氧化还原滴定的特殊规律,运用化学反应的计量关系和能斯特公式,给出了氧化还原滴定终点误差的简单计算公式。
- This paper derives a terminal point error formula of mixed acids (bases) respective titration by algebraic method,and discusses the formula. 本文用代数法推导了混合酸(碱)分步滴定的终点误差公式,并对该公式进行了讨论。
- In order to make the airborne radar instruction control antenna pointing correctly overcome the influence caused by maneuvering of carrier aircraft, and airspace stabilization algorithm is adopted in the airborne radar control circuit. 摘要为使机载雷达指令克服载机机动而正确控制天线指向,在机载雷达控制回路中加入了空域稳定计算。
- An attempt to offer a new treatment of end point error in precipitation titration by using hyperbolic sine function is given in this paper. 基于沉淀滴定基本原理,利用双曲正弦函数性质提出了一种处理沉淀滴定终点误差的新方法。
- The main function of the airborne radar stabilized platform is to isolate the effect of aircraft angle moving on radar operation, so as to ensure the antenna pointing stability and scanning a certain region according to control system command. 机载雷达稳定平台的作用主要用来隔离飞机的角运动对雷达工作的影响,保证天线的指向稳定以及按照控制系统的指令对某一区域进行定点扫描。
- The general end point error formula is established in this paper.It takes into consideration the interfering reaction and is also applicable to nonaqueous titration. 本文建立了通用的滴定终点误差公式,考虑了副反应的影响,也适用于非水滴定。
- In mixed weak acid titration, calculation of PH of stoichiometric point, calculation of end point error and stepwise titration criterion are the must specific problems. 在混合弱酸滴定中,化学计量点时PH值计算、终点误差计算,分步滴定判据是三个必须明确的问题,本文对混合弱酸滴定的这三个问题作一探讨。
- The Cassini spacecraft flys over the surface with its High Gain Antenna pointed at the Huygens probe as it reaches the surface. 卡西尼号航天飞船飞跃泰坦的表面并在到达泰坦地表时用高频的探测仪器对惠更斯区域做了探查。
- To make sure that the antenna points to the right direction is the basis of effective work of telemetry and telecommand system of a helicopter. 摘要保证天线跟踪系统的正确跟踪指向是无人驾驶直升机遥测遥控系统可靠工作的关键技术问题。
- That the antenna points at the aerocraft very precisely can utilize the gain of antenna ,minishing the power of transmitter, and propagating data very gualitily effectly. 在无线测控系统中,天线精确指向飞行目标,可最佳利用天线增益,减小发射功率,高质量的进行控制和数据传输。
- With the constraint co nditions that weapons must hit targets, the relation expressions between conception model and control model vs. pointing error and design error have been established. 以武器必须命中目标为约束条件,建立了构思模型、控制模型与瞄准误差、设计误差的关系方程。
- The errors of Inertial Measurement Unit(IMU) affect the accuracy of the system a lot and also determine the impact point error of missiles directly. 弹上惯测组件(IMU)的误差是影响系统导航精度的重要因素,并直接决定导弹的落点偏差。
- The errors of Inertial Measurement Unit (IMU) affect the accuracy of the system a lot and also determine the impact point error of missiles directly. 摘要弹上惯测组件(IMU)的误差是影响系统导航精度的重要因素,并直接决定导弹的落点偏差。
- Two-axes antenna pointing mechanism 双轴定位机构
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries