1、

Unit positioning is one of key technologies of LAMOST, whose positioning accuracy is the core of focal panel system.

单元定位是LAMOST主要关键技术之一,其定位精度是焦面系统的核心。

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2、

Kalman filter algorithm is used to estimate the moving target position, with the purpose of increasing positioning accuracy.

采用卡尔曼滤波算法对移动目标位置进行估计,提高定位精度。

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3、

Gear finishing is the procedure in which NC working punching machine is used to decoct the gear rag etc, which needs that the gears must be placed at appoint position of the punching worktable and positioning accuracy is high.

齿轮精整是利用数控精整冲床去除齿轮上毛刺以提高齿轮精度的一道工序,该工序需要将齿轮放置在冲床工作台的指定位置,且具有较高的定位精度。

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4、

The principle and structure of measuring device to detect the positioning accuracy of LAMOST fiber positioning unit are introduced.

介绍LAMOST光纤定位单元定位精度检测装置的工作原理及结构。

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5、

Discussion on the Positioning Accuracy of DGPS and TS ( Total Station) in Underwater Topographic Surveying

差分GPS和全站仪在水下地形测量定位精度探讨

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6、

A New Mechanism of Heightens the Machine Tools Repeatability Positioning Accuracy

提高机床重复定位精度的新机构

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7、

Missile Firing Methods Under the Condition of Lower Target Positioning Accuracy

目标定位精度较低情况下的导弹射击方法

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8、

This paper, from tactics application viewpoint, analyse some ship to ship missile firing methods under the condition of lower target positioning accuracy.

以舰对舰导弹为例,从战术运用角度,分析和论述了几种在目标定位精度较低情况下的导弹射击方法。

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9、

Simulation results show that after real time rectification, OD scale factor error can be reduced to 10~ (-4) quantity from 0.01, and the positioning accuracy of tightly coupled system is prior to loose coupled system.

仿真结果表明,紧组合系统可将刻度系数误差从0.01减小到10~(-4)量级;与松组合系统相比,紧组合系统的定位精度也得到了很大的提高。

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10、

By applying the presented approach, the positioning accuracy of the existing system can be significantly improved to obtain the theoretical maximum luminous flux.

这种方法可以显著提高现有系统的定位精度,获得理论最大的光通量。

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11、

This paper introduces the method of testing the real time differential GPS of the Yangtze River estuary, and offers the results of data processing. It is proved that the differntial GPS technique can raise the positioning accuracy more than 10 times.

本文叙述长江口实时差分GPS试验的方法、内容及其数据分析处理的结果,证实了差分GPS技术可使定位精度比GPS提高10倍以上。

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12、

As the main interference, sky wave brings in the form of MAI and near-far effect in the navigation receiver, which can affect the positioning accuracy seriously.

天波作为系统中存在的主要干扰源,在导航接收机中以多址干扰和远近效应等两种形式存在,严重影响系统定位精度。

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13、

The polar crane for nuclear power plant runs on a circular orbit on the top of the reactor plant, lifts the pressure vessel cover and components for reactor, and the positioning accuracy of polar crane must be strictly controlled.

核电站环行起重机运行于核反应堆厂房上方的环形轨道上,用于吊运反应堆压力容器顶盖和堆内构件,对其吊装定位精度要求极高。

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14、

When one system deteriorated, the integrated system could improve the positioning accuracy effectively.

当一个子系统发生突变时,综合系统可有效地改善其定位精度。

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15、

It is assumed that the accuracy of internal thread depends on the accuracy of tap, while the positioning accuracy of threaded hole depends on that of bottom hole before threading.

总结出内螺纹的螺纹精度直接取决于丝锥的精度,而螺纹孔的位置精度却有赖于攻丝前螺纹底孔的位置精度。

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16、

Errors of RSSI measurement and network location can be got by measuring the distance between beacon nodes, thus the positioning accuracy of entire network can be improved by error compensation.

该算法通过测量信标节点之间的距离,获得信标节点RSSI值测量误差和网络的定位误差,并对误差进行补偿,从而提高整个网络的定位精度。

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17、

These results are valuable to improve the moving velocity and positioning accuracy of this type inchworm mechanism.

研究结果对提高该进给机构的运动速度、运动精度有一定的指导意义。

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18、

It can crawl into Φ 10mm-curved pipes with high positioning accuracy. The inchworm micro-robot consists of two Φ 8mm piezoelectric cymbal actuators and a global positioning mechanism.

该机器人包括两个Φ8mm槽钹形压电复合驱动器和一个爬行定位系统,能够在Φ10mm的曲线形管道中自主定位爬行。

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19、

Lens is treated as the most basic optical components, and the positioning accuracy of lens center directly affects the imaging quality of entire optical system. Therefore the measuring technology of optical lens decentration has important significance.

透镜作为组成光学系统最基本的光学元件,透镜中心的定位精度直接影响整个光学系统成像质量,因此透镜中心偏测量技术的研究具有重要意义。

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20、

Positioning accuracy in the axis, radial and circumferential directions were achieved by adopting many advanced and delicate technologies.

在加载和转动装置中采用了诸多高精技术,实现了试件高精度的轴向定位、径向定位和刚性角度定位;

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