ranging accuracy

The ultrasonic ranging is used to design the plane location system with a high accuracy.

将超声波测距技术应用于物体的平面定位中,设计具有精确度较高的平面定位系统.

This paper proposes a computation method for initial orbit determination and orbit improvement with ranging and range rate data at low angular measurement accuracy or unavailability of angular measurement data based on the ( Unit-Vector-Method ( UVM)) principle.

根据单位矢量法测轨原理，给出了在测角精度比较低或没有测角资料的情况下，利用测距、测速资料进行初轨和轨道改进的计算方法。

Up to now the single-shot ranging accuracy at Shanghai Observatory reached 10~ 12mm.

目前上海天文台卫星激光测距站单次测距精度已达到10～12mm。

Different road parameters and user positions. It shows that the main influence factors to user's plane accuracy are the ranging errors and the ephemeris errors, while to the height accuracy is come directly from the height error of the road database.

理论分析表示，测距误差、星历误差是影响用户平面精度的主要因素，而道路数据库的高程误差是影响用户高程精度的主要因素。另外，也进一步验证了该方法的可行性和可靠性。

Method for Improving Ranging Accuracy of Short-range Millimeter Wave Radar

提高毫米波近程探测雷达测距精度的方法研究

Then the factors of accuracy and the requirements of the emission module are analyzed. A specific laser diode with integrated MOSFET and capacitor and a dedicated driver chip are used in the system to output high-quality laser pulse as the ranging signal.

文章首先分析了激光脉冲发射系统对测距精度的影响因素和对发射模块的要求后，系统采用专用集成MOSFET和电容的激光二极管和专用的驱动芯片产生高质量的激光脉冲作为测距信号。

As an important feature, the characteristics of echo stretching affects SNR of received laser echo signal and ranging accuracy.

脉冲展宽特性是激光回波的重要特性，其影响到回波接收信噪比和测距精度。

The Study on the Effect of Atmosphere Refraction Index Error on the Precise Optoelectronic Ranging Accuracy

大气折射率误差对精密光电测距精度的影响研究