The method can achieve fourth-grade leveling survey precision demand by precision analysis, and then brings forward some measure to increase observation precision.
通过精度分析，该方法可达到四等水准测量的精度，提出了提高观测精度的相应措施。
This devices measure the distance in high precision and reliability of the final text analysis of the causes of the errors and how to improve the system.
该系统对有限范围的距离测量具有较高的精度和可靠性，最后文中分析了误差产生的原因及如何对系统进行完善。
Finally, an improved algorithm for fractional harmonic analysis is used to reduce the leakage, the result of the simulation shows it can heighten the precision of the measure of the parameter.
最后，对于非整数次谐波的测量用改进算法来减少频谱泄漏，仿真结果表明，改进算法能较大的提高参数测量的精度。
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