An optimum distribution condition of radio sources for the determination of Earth rotationparameters by means of VLBI technique was proposed and explained in detail.
本文提出了应用射电干涉测量的方法测七地球自转的三个参数时，源矢量的最佳分布条件。
2
Its parameters such as velocities of ejection and rotation are calculated.
算出了弹壳的抛壳速度、方向和自转速度等有关参数。
3
In the matching process the parameters of rotation and displacement were obtained by two congruent triangles, then the point-pairs matching would be performed on the transformed sets.