oblateness

扁圆形；[天] 扁率中释n

1 The oblateness tends to decrease since the formation of the earth..地球的扁率自形成以来总体趋势在减小。

2 In this paper, we discuss the effect of the Earth's oblateness and ionosphere on the retrieval, and analyze the result of the local curvature correction and the ionosphere calibration..本文采用模拟的方法，分析其中地球扁率及电离层对反演结果的影响，并讨论局部圆弧修正及电离层修正的效果。