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在重力网平差中,由于使用方法的不同,所得的结果也会不一,甚至可超过重力随时间的变化量,成为研究重力随时间变化与地震关系的主要干扰,因此选择合适的平差方法是必要的,为此本文讨论了拟稳平差在重力网平差中的应用问题。一、问题的提出对重力网中各点重力值变化的判断至少是建立在两期以上测量成果的基础上,在比较时必须有一个统一的基准(参考系)。目前广泛采用的条件平差,选择的是固定参考系。固定参考系的缺点在于重力值不变点选择的不同,最后求出的结果也不同,同时固定点重力也可能
In the adjustment of gravity network, due to the different methods of use, the results obtained will be different, and may even exceed the change of gravity over time, becoming the main interference in studying the relationship between gravity and time and the earthquake. Therefore, choosing the appropriate adjustment Method is necessary. For this reason, this paper discusses the application of quasi-stationary adjustment in the adjustment of gravity network. First, the issue raised Gravity network at all points of gravity changes in judgments based at least on more than two measurements based on the results, in the comparison must have a uniform benchmark (reference frame). The current widely used conditional adjustment, the choice of a fixed frame of reference. The disadvantage of a fixed frame of reference is that the constant value of gravity is chosen differently and the result is different at the end,