解决了大型精密安装的轴向合像问题，并可将瞄准精度提高一倍。
This resolved the problem of axial split-image in mass exact setting and improved the precision up to twice than the former.
长焦变焦镜头用于军事瞄准时，变焦过程中较大的光中心漂移，降低瞄准精度。
When zoom lens are used for military sighting, the drift of optical center caused by the change of focus length will reduce the sighting accuracy severely.
本文介绍了亚象素细分定位的原理，瞄准精度的测量方法，以及所能达到的精度。
The principle of sub pixel subdivision positioning, measuring method for the pointing accuracy and the attainable accuracy are introduced in the paper.
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