天文观测数据具有序列长、精度高、信息量丰富和形式多样的特点。天文观测数据是自然科学中样本序列最长的一种数据,如太阳黑子数、地球自转资料已有几百年或上千年的观测结果。在几千公里的空间尺度上,天文观测已达到厘米量级的测量精度,在时间尺度上已达万分之几时秒的精度。天文数据中除测量噪声外,它还有确定性信号,也还包含着非确定的时变信号。天文资料既有数字记录型式,也有图像显示型式。 Astronomical observations with long sequences, high precision, informative and diverse forms of features. Astronomical observations are the longest sample of natural sciences in a series of data, such as the number of sunspots, Earth Rotation data has been observed for hundreds or thousands of years. On thousands of kilometers of space scales, astronomical observations have reached centimeter-level measurement accuracy, the time scale has reached a few tenths of seconds of precision. Astronomy data in addition to measuring noise, it also has a deterministic signal, but also contains a non-deterministic time-varying signal. Astronomical data both digital recording type, there are image display type.