误差 error 平均误差 mean error; average error; 仪器误差 instrumental error; 概然误差 probable error; 行星观测上位置与计算上位置间的误差 the error of a planet; 误差极微的精密零件 precision parts with very close tolerances; 误差不超过千分之三毫米 with a tolerance of less than three-thousandths of a millimetre; 误差分析 error analysis; 误差概率 probability of error; 误差估计 error estimate; 误差函数 error function; 误差量 extent of error; 误差率 error rate
Muti - aperture overlap - scanning technique ( maost ) and target function can solve the problem of testing a large optical surface on the basis of ordinary digital interferometer of wavefront , and get the most information of wavefront in the end in the condition of big kr , muti - aperture overlap - scanning technique ( maost ) using target function is proved and we can get the most information of wavefront in the case of guarantee of high precision by the aid of simulation , experimental and tests , many influential factors , i . e . , the apertureconnection mode , shape of mirror , error in subaperture test and kr are analysed contribute to controlling and testing large optical surface 本文首先在较大孔径放大系数( 4 )的情况下,论证了目标函数多孔径拼接技术,保证了较高的精度,得到较完整的波前信息。然后,结合实验结果,从拼接模式、被测面形、测量误差、数字干涉仪分辨率和不同孔径放大系数等角度出发,分析了各种因素对精度的影响,并详尽的探讨了各种误差源,包括静态误差、动态误差、拟合误差、拼接误差。
Based on an analysis of the sources of errors in airborne gravity measurements , an error model is studied to constructed mathematically which can characterize the change of systematic errors , with which the network adjustment is carried out and the model parameters are determined simultaneously . and finally , the compensation of systematic errors is realized 航空重力测量测线网平差就是在分析、总结航空重力测量的主要误差源基础上,研究建立反映航空重力观测系统误差变化规律的误差模型,根据交叉点不符值条件,平差求解各测线上重力观测值系统误差改正数,然后对各测线上所有重力观测值进行改正(补偿) 。
Abstract : a group of phase shifting algorithms is derived by the method of undeterminedcoefficients ( ucm ) . the unknown coefficients are set in a general algorithm expression , and then solved by adding bonding equations according to error compensation requirements . thus the algorithm design and error alalysis are carried out simultaneously . phase shifting algorithms derived by this method are insensitive to one or more error sources which are considered in algorithm design 文摘:提出了一种以误差补偿为目的的新的相移算法设计方法?待定系数法,该方法首先在算法表达式中引入一系列待定参数,根据对误差补偿的要求提供约束方程,从而解出这些未知参数.待定系数法使得算法设计和误差分析是同时进行的,改变了以往先设计算法再进行误差分析和评价的过程,由待定系数法导出的相移算法对算法设计中所考虑的误差源具有良好的补偿性能
Two practical applications prove their efficiency . 3 . using knowledge of adjustment with additional systematic parameters , based on an analysis of the sources of errors in airborne gravity measurements , an error model is studied to constructed mathematically which can characterize the change of systematic errors and with which three kinds of new crossover adjustment models are presented 3 、根据附加系统参数平差的理论,在分析、总结航空重力测量的主要误差源基础上,研究建立了反映航空重力测量系统误差变化规律的误差模型,并根据三种不同的情况建立了相应的测线网平差模型。