During radar tracking target in low elevation, the measuring error of tracked target was removed or reduced with array antenna beam forming technique that can reduce the multi-path error.

当雷达在低仰角跟踪时，降低多径误差的阵列天线波束的形成技术，可消除或降低低仰角跟踪目标时的测量误差。

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Furthermore, the analysis and discussion have been done on the problem of making an active correction to the formwork erection elevation of the main beam and cable force.

并对主梁立模标高和斜拉索的张拉索力的主动修正问题进行了分析和讨论。

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