加速度计

Two sets of measuring unit consisting of 3 accelerators in 3 mutually perpendicular directions are placed 30 m apart.

每3个相互正交安装的加速度计组成一组测量单元，两个单元之间相距30m，并相对固定。

Integrated SINS/GPS navigation system, which plays key roles in the navigation field, is also studied. The design principles and implementation problems are investigated and discussed.

陀螺和加速度计的误差，圆锥效应的补偿剩余误差对长时间工作的SINS系统的性能仍有很大的影响。

In this paper, firstly, the new combined error model of cumulative geoid height influenced by three error sources including the inter-satellite range-rate of K-band ranging system, orbital position of GPS receiver and non-conservative force of accelerometer from GRACE satellites is established using the semi-analytical method. Secondly, the dependability of error models is demonstrated based on matching relationship among the accuracy indexes of key payloads. Finally, the accuracy of global gravitational field up to degree and order 120 is effectively and rapidly estimated from GRACE Level 1B measured observation errors of the year 2006 publicized by the Jet Propulsion Laboratory in the USA, and the cumulative geoid height error is 18.368 cm at degree 120, which preferably accords with the Earth's gravitational field model EIGEN-GRACE02S provided by the GeoForschungsZentrum Potsdam in Germany.

首先基于半解析法建立了新的GRACE卫星K波段测量系统星间测速、GPS接收机轨道位置和加速度计非保守力误差联合影响累计大地水准面的误差模型；其次，基于各关键载荷精度指标的匹配关系，论证了误差模型的可靠性；最后，基于美国喷气动力实验室公布的2006年的GRACE Level 1B实测误差数据，有效和快速地估计了120阶全球重力场的精度，在120阶处累计大地水准面的精度为18.368 cm，其结果和德国地学研究中心公布的EIGEN-GRACE02S全球重力场模型符合较好。

This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering.

本论文从工程实际出发，围绕液浮摆式加速度计测试系统展开了研究。

The pendulous accelerometer design had much in common with the gyro design.

摆式加速度计的设计与陀螺设计有很多共同之处。

The QVBA key micro-machined technology are also developed in this paper, such as: single step double sides multilayer photolithographic process, quartz crystal anisotropic etching process.

在仿真分析基础上，完成了石英振梁加速度计的设计及关键微加工工艺研究，包括：单步双面多层光刻工艺、石英晶体各向异性刻蚀工艺等。

The time series analysis approach is adopted to build its random error model.

采用时间序列方法对振梁加速度计的随机误差进行建模，并将结果进行比较。

In order to utilize it better in the new generation inertial navigation system,it is necessary to study the random error model of VBA.

为了更好地将振梁加速度计应用于新一代惯导系统中，有必要研究其随机误差模型。

The error model identification of accelerometers on a azimuth strapdown platform system is also concerned in the dissertation. The composite 14 position test plan of the regular hexahedron and octahedron is provided, and identification results are obtained by using improved progressive regression algorithm.

本文实验研究了方位捷联平台系统加速度计误差模型辨识方法，根据最优试验设计理论设计了正六面体和正八面体组合十四位置试验计划，并用改进的逐步回归算法给出了辨识结果。

This paper presents a north self-seeking model with platform rotating around a fixed axis .

目前加速度计的分辨率无法直接敏感地球自转北向分量，文中设计了一种基于定轴旋转的自主式寻北模型。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了