Accurate carrier phase measurement is an important research direction in precise ranging.
精确的载波相位测量是精密测距中一个很重要的研究点。
In this thesis, the EMW-based precise ranging technology was studied, a location system based on PTR8000 was proposed fulfilling coarse location.
本文针对井下人员定位系统，深入研究了基于电磁波测距的精确定位方法，并提出了一套基于PTR8000的井下人员定位系统方案。
Ultrasonic positioning is simple in structure, practical, low cost, the advantages of precise ranging. Therefore, was widely applied to various fields.
超声波定位具有结构简单、实用性强、成本低、测距精准等优点，因此被广泛的应用到各个领域。
The algorithm is applicable to precise measuring of the PN code phase of satellite positioning signals and spread-spectrum ranging signals.
该算法的主要应用领域为卫星定位信号和直序扩频测距信号PN码相位的精确测量。
The results of simulational experiment show that the method of passive ranging and tracking is effective and fairly precise by the magnetic dipole sour ce within the undersea functional range.
结果表明，在水下有效测量距离范围内，利用磁偶极子辐射源进行被动测距与跟踪的方法是有效的，具有较高的测距精度。
The experiment results indicate that the algorithm improves ranging precision and the estimation of distance measurement is more precise than that of weighted average method.
实验结果表明，该方法提高了整体测距精度，得到了被测距离更加准确的估计。
The experiment results indicate that the algorithm improves ranging precision and the estimation of distance measurement is more precise than that of weighted average method.
实验结果表明，该方法提高了整体测距精度，得到了被测距离更加准确的估计。
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