The laser link was used between tracking and data relay satellite system, and feasibility of this scheme used travelling wave LiNbO3 modulator of broad band is demonstrated.
其跟踪和数据中继卫星之间采用激光链路，并论证了宽带LiNbO3行波调制器用于空间光通信的可行性。
In satellite optical communications, improving the real-time measure precision for the angle errors of the incoming beam, higher tracking performance of a terminal can be reached and the laser link can be maintained steadily.
卫星光通信中，提高对入射光束角度偏差实时测量的精度，可以有效地提高终端的光束跟踪性能，进而有效地保持激光链路的稳定。
Using 11 years (1983～1994) observation data of Satellite Laser Ranging to the Lageos-1 satellite in the global tracking network, we estimate the second degree gravity field coefficient and tidal parameters.
利用1983～1994年(共11年)期间，全球人卫激光测距观测网对Lageos-1卫星的观测资料，估算二阶重力场系数和潮汐参数。
With GPS-based satellite tracking observation, comprehensive orbit solution and Satellite Laser Ranging, the precision of earthquake electromagnetism satellite orbiting can reach to centimeter grade.
地震电磁卫星拟采用星载GPS和综合轨道求解方法进行精密定轨，并辅之以人卫激光测距，其定轨的精度可达厘米级。
On Earth-space paths, this beam scintillation index model is significant for the laser imaging, tracking, controlling and guiding, and laser satellite-Earth communication.
高斯波束的斜径闪烁指数模型的建立发展了湍流闪烁理论，将对地－空路径光通信、成像、遥感、激光制导和强激光系统的设计和应用具有重要的实际意义。
In some autotracking antenna systems of the mobile satellite communication earth stations, the laser gyroscope is used for tracking, which proves to have some disadvantages.
某些移动卫星通信天线自动跟踪系统采用激光陀螺进行跟踪，但激光陀螺跟踪有其不足之处。
Using 11 years (1983~1994) observation data of Satellite Laser Ranging (SLR) to the Lageos 1 satellite in the global tracking network, we estimate the second degree gravity field coefficient and tidal parameters.
利用1983～1994年（共11年）期间，全球人卫激光测距（SLR）观测网对Lageos-1卫星的观测资料，估算二阶重力场系数和潮汐参数。
SLR is a most high-accuracy tracking technology to artificial satellite flying in orbit, by measuring the round trip time of a laser pulse between satellite and observatory station.
卫星激光测距（SLR）是利用测量超短激光脉冲在卫星与地面测站间往返飞行时间的方法确定星地距离，对在轨卫星进行精密跟踪的一种技术。
In the Inter-satellite laser communication system, because the laser beam is very narrow and the transmission distance is too far, PAT (Pointing Acquisition and Tracking) is the key technology to establish and maintain the optical communication link.
在卫星光通信系统中，由于激光束非常窄，且传输距离远，所以瞄准、捕获和跟踪（PointingAcquisitionandTracking，PAT）技术是光通信链路成功建立和保持的关键技术。
In this paper the motion differential equations, transfer functions and frequency characteristics of the tracking follower system of G 171 Satellite Laser ranger are analyzed and calculated. It also analyzes the linearity and dead band of the system.
本文从理论上推算和分析了G171人卫激光测距仪的跟踪随动系统的运动微分方程、传递函数和频率特性，并分析了系统的线性及死区。
Starting from vector refraction theorem, the design principle of transmitted laser beam through double-prism to perform microradian deviation is researched, and the testing problem of fine pointing and tracking in inter-satellite optical communications is solved.
基于矢量折射定理，研究了透射光束通过双棱镜实现微弧度量级偏转的设计原理，解决了星间激光通信精跟瞄检测的难题。
With GPS-based satellite tracking observation, comprehensive orbit solution and Satellite Laser Ranging (SLR), the precision of earthquake electromagnetism satellite orbiting can reach to centimeter grade.
地震电磁卫星拟采用星载GPS和综合轨道求解方法进行精密定轨，并辅之以人卫激光测距，其定轨的精度可达厘米级。
Point accuracy of telescope is one of the important item for Satellite Laser Ranging (SLR). The star tracking can be used for correction telescope pointing.
望远镜的指向精度是人卫激光测距系统的一项重要指标，利用对恒星的观测可以修正望远镜的指向精度。
The results clarify the basic concepts necessary for the testing of optical tracking performance of inter-satellite laser communication terminals, which would provide helps in the ground testing.
澄清了卫星激光通信终端光学跟踪性能检验中的基本概念，具有实际指导意义。
Using 11 years (1983 ~ 1994) observation data of Satellite Laser Ranging (SLR) to the Lageos 1 satellite in the global tracking network, we estimate the second degree gravity field coefficient and tidal parameters.
利用1983～1994年（共11年）期间，全球人卫激光测距（SLR）观测网对Lageos-1卫星的观测资料，估算二阶重力场系数和潮汐参数。