指出星表误差可以看作模型不确定性的一部分，采用鲁棒滤波技术进行处理。
It is shown that the pulsar's position error can be seen as model uncertainty, and the effect of the uncertainty can be reduced by using the robust filtering technique.
对影响中国古代星表数据的各种误差进行了讨论。
A discussion of several errors of the data of ancient star catalogues of China is made.
利用这个期间的资料，初步研究了FK_4星表的系统误差和改进光行差常数等问题。
Using the data obtained during this period, the problems of determining the systematic error of FK_4 catalog and improving the constant of aberration are investigated.
本文叙述了子午星表系统误差的主要来源，等高观测的特点及等高星表的不足之处。
In this paper, the main sources of the errors in a meridian catalog, the characteristics of the equal altitude observation and the shortages of an equal altitude catalog are described.
本文讨论了本星表的归算方法，并对中星仪的方位误差的改进提出了方案。这个方案已在陕西天文台的仪器上进行了实验，结果证明方位误差明显得到了改善。
The methods for reduction results are discussed in our paper Especially, the improvment for the error of the azimuth depended on the working catalogue and the transit instrument has been discussed.
本文讨论了本星表的归算方法，并对中星仪的方位误差的改进提出了方案。这个方案已在陕西天文台的仪器上进行了实验，结果证明方位误差明显得到了改善。
The methods for reduction results are discussed in our paper Especially, the improvment for the error of the azimuth depended on the working catalogue and the transit instrument has been discussed.
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