提出了一种基于双频观测数据的单历元周跳探测和修复方法。
A new method is proposed for detecting and repairing cycle slips in GPS navigation based on the dual frequency observations.
基于吉洪诺夫正则化理论，研究了一种适合变形监测的单频单历元算法。
Based on Tikhonov regularization, a new single epoch algorithm suitable for deformation monitoring using single frequency GPS receivers is proposed.
提出相邻历元间差分算法，大大简化了观测方程，同时避免积分常量的计算。
A differential arithmetic is proposed for simplifying the observational equation as well as for avoiding the computation of the unknown integer constant.
其次，研究了历元状态滤波算法，分析其工作原理，并推导出了状态方程和测量方程。
Secondly, epoch state filter is studied by analyzing its working principle and deriving the state equation and measurement equation.
根据高精度GPS变形监测的特点，建立了单历元解算变形量的似单差模型及其算法。
According to the characteristics of the precise GPS deformation monitoring, the similar single-difference model and its algorithm for solving deformation values at single epoch is built.
对单个历元的双差载波相位观测方程进行零空间变换，避免了实时变化的三维位置参数求解；
It transforms the double-differential carrier observation equation using null space transformation so that it need not to resolve real-time three-dimensional position parameters.
在下面的窗口输入你想要的得到的标准历元，然后点击计算，这样就能够显示你想要得到的历元坐标。
Enter the desired final epoch in the lower portion of the dialog, then click the Calculate button to display the coordinates precessed to the final epoch.
采用历元状态滤波建立了星上自主中长期轨道预报方法，并以太阳同步轨道卫星为例对算法进行了仿真验证。
The on-board autonomous term orbit prediction is built according to epoch state filter. And sun-synchronous orbit satellites are taken as examples for the simulation.
与第一历元的观测比较，3C345和3C380的流量密度没有明显的变化，但3C345的结构变化明显。
No significant changes in the flux density of 3C345 and 3C380 are found by comparing with the first epoch observations.
在作者提出的GPS单历元阻尼lambda算法的基础上，结合固定边长条件，给出了一种GPS姿态定位的新方法。
A damped LAMBDA algorithm is used for single epoch GPS positioning combining the condition that baseline length on vessel is fixed, a new method for attitude determination with GPS is put forward.
很多老的星表和参考源使用的是一个更早一点的标准历元，这个较早的历元按照贝塞尔年的开始-1950年建立起来的。
Many older catalogs and reference sources use an older standard epoch based on the start of the Besselian year 1950 - this epoch is called "B1950.0".
并根据GPS卫星广播星历求取卫星任意历元的位置、速度、加速度以及加速度的变化率，仿真出GPS卫星运行轨道。
Secondly, the GPS satellite circulating orbit is simulated, according to the position, speed, acceleration and the rate action factor of acceleration, given by GPS satellite broadcast star calendar.
理论分析与仿真结果表明：与仅采用单频GPS测量信息相比，该方法不仅能有效地提高相对定位精度，而且还能大大减少整周模糊度判定所需的历元数。
The simulation result shows that this method can not only improve the positioning precision, but also reduce the epochs greatly needed by fixing the ambiguity.
浙江景宁畲族自治县的畲族乃是从唐代开始，历宋、元、明、清各代陆续从广东、江西、福建等地迁来的。
She Nationality in Jingning autonomous county Zhejiang province came from Guangdong, Jiangxi, Fujian and so on during dynasties of Tang, Song, Yuan, Ming and Qing.
宋仁宗庆历二年（公元1024）建陪都，史称“北京”，元、明、清为路、府、道所在地；
Song Qingli Injong year (AD 1024) to build capital, known as "Beijing", Yuan, Ming and Qing for the Road, House, Road location;
贞元十六年登第，历官至镇州宣慰副使、尚书郎、饶州刺史。
Zhenyuan 16-year board first, Li was appointed the town of State Tournament Fushi, Shangshu Lang, Rao prefectural governor.
贞元十六年登第，历官至镇州宣慰副使、尚书郎、饶州刺史。
Zhenyuan 16-year board first, Li was appointed the town of State Tournament Fushi, Shangshu Lang, Rao prefectural governor.
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