利用新参数和软件改进重力固体潮计算程序

To improve the earthtide calculating program by new parameters within software

重力固体潮的计算无论是在流动重力观测的校正还是在固定台站重力观测值的校正上都是必不可少的,并且很大程度上决定了最终结果的准确性.固体潮的计算程序比较成熟,但是目前大多数程序所采用的公式、参数和方法比较陈旧.为了提高计算结果的时效性和准确度,经过对原公式的详细分析和计算程序的改进,本文给出一个改进的计算公式和计算方法.特别在计算儒略日和六个天文参数时采用J2000.0系统,更合时宜.另外,Matlab是非常优秀的数学计算软件,本文利用Matlab的优势,重新编写固体潮计算程序,最后利用改进的计算程序给出一个计算实例,证明了程序的可靠性和结果的精确性,得到较好的结果.因此,本文利用新参数和软件改进重力固体潮计算程序的方法是成功的,值得在相关计算领域推广.

The earthtide calculating is essential for the observational data correction either in mobile gravitational survey or in stationary gravitational survey.The precision of the earthtide calculating determines the accuracy of the data correction.The programs of earthtide calculating that based on old formulas are well-understood but outdated.A new formula and calculating method are discussed in this paper to update the program and improve the precision of the calculating.J2000.0system of equations is used in the calculation for Julian day and the specified six astronomical parameters.The earthtide calculating program is reprogramed in Matlab which is brilliant mathematics software.An instance based on the improved program is given at the end of this paper and shows a great result.Therefor the updated method of earthtide calculating with new parameters is effective and worth to be popularized.