1) measurement accuracy
测量精度
1.
Improvement of measurement accuracy in testing the residual stresses in auto-frettagea tube;
用镗削法提高自增强管残余应力测量精度
2.
Influence of background scattering on measurement accuracy of laser radar cross section;
背景散射对LRCS测量精度的影响分析
3.
The factors of impacting the X-ray thickness measurement accuracy and methods to maintain
影响X射线测厚仪测量精度的因素及维护方法
2) measuring accuracy
测量精度
1.
The factors affecting the measuring accuracy of natural gamma while drilling.;
影响随钻自然伽马测量精度的因素
2.
Analysis and Improvement of Command Factor Measuring Accuracy for a Missile;
一种导弹指令系数测量精度的分析与提高
3.
The temperature effect on the measuring accuracy of a magnetostrictive liquid lever sensor;
温度对磁致伸缩液位传感器测量精度的影响
3) measuring precision
测量精度
1.
Study on influence of refrigerant -oil mixture on compressor capacity measuring precision in calorimeter;
量热器法系统含油量对压缩机冷量测量精度影响的研究
2.
The Researching for Improving Measuring Precision of Fiber-Optic Backscattering Method;
提高光纤背向散射法测量精度的方法研究
3.
In the long using process,the precision of the dynamic measurement system will drop away inevitably,so the measuring precision will decline gradually,which directly influences the precision and dependability of the measuring resultant.
在长期的使用过程中动态测量系统的测量精度不可避免会逐渐降低,将直接影响测量结果的精度和可靠性,掌握动态测量系统的精度损失规律,可以采取有效的措施来提高测量精度。
4) Measurement precision
测量精度
1.
Numerical analysis of the influencing factors on heat flux sensors measurement precision;
热流计测量精度影响因素的数值分析
2.
Research on the algorithms for improving the measurement precision in microprocessor-based protection;
微机保护中提高测量精度的算法研究
3.
Methods for improving ATS measurement precision
提高自动测试系统测量精度的方法
5) measure precision
测量精度
1.
Study on measure precision of γ-ray level meter;
γ射线料位计测量精度的研究和设计
2.
The size error of internal measure-hand in number-showing calipers and some factors to affect its measure precision were analysed and some suggestions were put forward to perfect further standard and checking procedures.
对数显卡尺内测量爪尺寸偏差及影响测量精度诸因素进行了分析，对完善标准和检定规程提出建议。
3.
In accordance with the affection of transformation quantity of measured force on its precision,the improving measures were put forward,then the measure precision was raised,the inspection request of fine products was satisfied.
针对仪表测力及测力变化对其精度的影响,提出改进措施,从而提高了仪表的测量精度,延长了其使用寿命,满足了检测精密产品的要求。
6) accuracy of measurement
测量精度
1.
The experiment has proved that it may inprove accuracy of measurement greatly to design reasonably concentrated ball collar-the critical nart of manufacturing core shaft.
经过实践证明 ,合理设计芯轴的制造关键部分———密珠套 ,可以大大地提高测量精
2.
In this paper, it is pointed out that the accuracy of measurement must be considered for the discussion about the restitution time of damped vibration, and it is in the “critical state of weakly damped vibration” defined by this paper, not the critical damping state, that the restitution time is the shortest.
本文指出在讨论阻尼振动的回复时间时必须要考虑仪器的测量精度才有意义 ,而且并非临界阻尼运动的回复时间最短 ,而是本文所定义的“弱阻尼振动的临界状态”的回复时间最短 ,进而导出了在给定测量精度时最短回复时间所满足的方
补充资料：雷达测量精度
雷达测量正确性或误差大小的量度。测量误差，一般用测量值与真实值之差的平方的统计期望值（均方误差）或平方根（均方根误差）来表示。雷达所测量的目标参数通常包括目标距离(回波时延)、距离变化率（多普勒频移）、方位角和俯仰角（回波到达角）等。现代雷达还能测量目标尺寸、形状和其他参数。测量精度的根本限制因素是噪声。根据参量估计理论可以求出雷达测量的极限精度，并把它作为设计和评价雷达的重要依据之一。
雷达回波由信号s(t-T)加噪声n(t)组成，式中T是回波信号的时延。时延T的估计值的均方根误差的下限为
式中
分别为信号能量和有效带宽;N0为噪声的功率谱密度(即单位带宽内的噪声功率)；s(f)为s(t)的傅里叶变换。多普勒频移的估计值的均方根误差的下限为
式中
为信号的有效时宽。
对于任意波形总有。因此
这说明,只要有足够大的信噪比E/N0并选择βα足够大的雷达信号，测量时延（距离）和频移（速度）均可获得所希望的精确程度。
由于天线方向图G(θ)和天线口径面上场的幅度分布A(x)之间也近似有傅里叶变换的关系，可以同样求得角度估值的均方根误差的下限为
式中γ称为有效口径宽度；λ为雷达波长。因此，雷达测量精度与雷达波形有密切关系。
雷达回波由信号s(t-T)加噪声n(t)组成，式中T是回波信号的时延。时延T的估计值的均方根误差的下限为
式中
分别为信号能量和有效带宽;N0为噪声的功率谱密度(即单位带宽内的噪声功率)；s(f)为s(t)的傅里叶变换。多普勒频移的估计值的均方根误差的下限为
式中
为信号的有效时宽。
对于任意波形总有。因此
这说明,只要有足够大的信噪比E/N0并选择βα足够大的雷达信号，测量时延（距离）和频移（速度）均可获得所希望的精确程度。
由于天线方向图G(θ)和天线口径面上场的幅度分布A(x)之间也近似有傅里叶变换的关系，可以同样求得角度估值的均方根误差的下限为
式中γ称为有效口径宽度；λ为雷达波长。因此，雷达测量精度与雷达波形有密切关系。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条