In order to improve reliability and accuracy of impact point positioning in the last stage of missile range, a fusion positioning method of measurement data is presented in this paper.
为了提高靶场末区落点定位的可靠性和准确性，提出了一种多传感器测量数据融合的定位方法。
According to position model, GPS is divided into single-point positioning and DGPS.
依据定位方式，GPS定位可分为绝对定位和相对定位。
The model and possibility of real-time precise point positioning(PPP) are studied based on PANDA.
精密单点定位的实质就是利用精密星历和精密卫星钟改正来实现定位。
Detecting cycle slips is one of the technical difficulties in single-frequency precise point positioning.
周跳探测是单频精密单点定位技术的难点之一。
Basing on current single point positioning precision, certain coordinate error is added into fixed points to study the result.
根据目前单点定位精度给起始点加上适当的坐标偏差，研究起始点坐标偏差对基线处理结果的影响。
The mathematic model of GPS dual-frequency precise point positioning and the corresponding program named "GPS-PPP" recently developed by the author were presented.
简要介绍了GPS双频精密单点定位数学模型及自主研制的精密单点定位软件。
Problems concerned with the optimum design, precision estimation and control point positioning of the control network in construction survey of a power plant are introduced.
文中介绍某电厂施工测量中有关控制网的优化设计、精度估计及控制点位放样方法等问题。
The pick-up arrangement, mathematical model of impact-point positioning, medium for the transmission of earthquake waves, and the general system block-diagram etc. are described.
讨论的着重点为传感器布阵、弹着点定位的数学模型、地震波的传播介质及系统总体框图等方面。
The new system improves the accuracy of failure-point positioning. It helps to find the failure points more quickly and accurately, thus increasing the efficiency of maintenance.
新系统可以提高轨道测试仪的故障点定位精度，更快、更准地找到故障点，提高了维修效率。
We apply the least squares estimate to calculate GPS single point positioning equation and precision estimate, and put forward the new satellites' constellation choice algorithm.
将最小二乘法应用于解算GPS定位方程，并对其进行精度估计，提出了一种新的星座选择算法。
This paper introduces the precision and current research status of precise point positioning (PPP), analyses its advantage, and the feasibility of PPP used in Shipping Lane Survey was expected.
介绍了精密单点定位的精度和研究现状，分析了其优越性，展望了在航道测量方面的应用可行性。
To realize center point positioning of fingerprint, method of maximum curvature is widely used at present. But it is inaccurate when the center region of fingerprint has been lost or not clear.
目前广泛采用最大曲率方法实现指纹中心定位，但在指纹中心缺失情况下，该方法定位并不准确。
To realize center point positioning of fingerprint, method of maximum curvature is widely used at present. But it is inaccurate when the center region of fingerprint has been lost or not clear.
目前广泛采用最大曲率方法实现指纹中心定位，但在指纹中心缺失情况下，该方法定位并不准确。
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