查询词典 datum level

The text analyses GPS observation model, the characteristic of kinds of errors fountain and the adopting measures in the observation, and processes the thorough research to Bernese GPS Software Ms-Windows Version 4.2. It makes the most stable satellites as the main error. The differential way adopts non-differential way and double differential way. The positioning precision of the single point is decimeter level. RMS is within 0.01~0.02; If the ambiguity right and without week skip, the observation datum of a EPOCH-BY-EPOCH can make the short base line（S0km）positioning precision reach centimeter level.

本文分析了GPS的观测模型、观测量中各种误差源的特点及应采取的措施，并对Bernese GPS Software Ms-Windows Version 4.2 软件进行了深入的研究，它是以最稳定的卫星作为主差，采用非差和双差两种差分方法，单点定位精度在分米级，RMS能在0.01~0.02以内；在模糊度已求解正确条件下，若没有周跳，一个历元的观测数据就可以使短基线（S0km）定位精度达到厘米级。

It introduces Survey control network pattern choice and its arrangement, cross river water level datum survey, single shaft orientation during pipe jacking for cross river cable tunnel at FuXing Road East, as well as design and application of Xiong Ying pipe jacking automatic survey guiding system applied in vertical curvature pipe jacking survey.

提 要：本文介绍了复兴东路220kV电缆越江隧道顶管工程施工测量中控制网的选形与布设、跨江水准测量、单井定向，以及雄鹰顶管自动测量引导系统在竖曲线顶管测量中的设计与应用，对类似作业及相应的工业软件开发极具参考价值。

Data processing mainly discussed data predisposing, datum line calculating and the smooth level of network.

数据处理主要讨论了数据预处理、基线解算和网平差。

It briefly introduces the historical change of Wusong Datum in the Changjiang Estuary region, and analyzes the spatial variations of regional mean sea level and theoretical bathymetrical datum plane in this region.

简要介绍长江河口地区吴淞零点的历史沿革，分析了长江河口地区水域平均海水面、理论深度基准面的空间变化，进而讨论长江河口地区的高程系统。

Wave-equation datuming can make the frequence-division stack method, which is depended on hyperbolic type, to be used in deep layer data; and make migration on the datum-level to be high efficient and accurate.

在对具有深层复杂地质特征的实际资料的处理中见到了效果。

The system have played an important role in Fucheng traffic administrative penalty organization, Mianyang Sichuan Province, promoted the level of manage administrative penalty cases datum, raised the service quality of traffic check, improved administrative speed, imposure quality and management level of impose personnel, and so on.

系统已经在四川省绵阳市涪城区交通稽查征费所发挥了重要作用，全面提升了交通稽征行政处罚案件数据的管理水平，在提高交通稽查征费服务质量、提高行政办事效率、提高征费人员的素质和管理水平等方面起到了重要的作用。

The surface subsidence in the Yellow River delta foreland area brings changes to the land surface height there, and the depth datum in the bathymetric survey is determined on the basis of the level of land bench mark, so the changes in the level of land bench mark will affect the determination of depth datum and the accuracy of bathymetric survey.

国家海洋局，第一海洋研究所，山东青岛 266061文章摘要：黄河三角洲前沿的陆地由于受地面沉降的影响，使地面高程不断发生变化。在水深测量中，深度基准面是根据陆地水准点高程确定的，陆地水准点高程的变化影响深度基准面的确定，从而影响水深测量的准确性。

The surface subsidence in the Yellow River delta foreland area brings changes to the land surface height there,and the depth datum in the bathymetric survey is determined on the basis of the level of land bench mark,so the changes in the level of land bench mark will affect the determination of depth datum and the accuracy of bathymetric survey.

又由于黄河海港附近有一无潮点，其附近的潮汐性质变化大，在黄河三角洲前沿大范围水深测量中，根据测区潮位变化设立足够的验潮站及统一各个验潮站的水尺零点到同一个深度基准面上，是保证水深测量结果可靠的关键。

Therefore, we just supplement and improve the use of altimeter setting and the datum level as used by the aerodromes where the transition height or the transition altitude and transition level have been set up in the Administrative Rules on Air Traffic of China's Civil Aviation.

鉴此，只对《中国民用航空空中交通管理规则》有关高度表拨正值的使用，以及划设过渡高或者过渡高度和过渡高度层的机场使用的基准面进行补充和完善。

At the datum level is the Internalisation level.

在材料水平是内在化水平。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。