Futhermore problems of the error of astro gravimetric leveling and the nonlinear influence are discussed.

讨论了天文重力水准的误差及垂线偏差非线性影响等问题。

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This idea is very novel and only our company has the patent. It was avoid human error in manual leveling, save the time and really did it once and for all.

这个思路非常新颖，国内只有我们公司有这项专利，免去手动调平的各种繁杂以及人为误差，节约了时间，真正做到了一劳永逸。

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To eliminate the influence of nonlinear error of PSD on the measurement scale and accuracy of laser leveling tester, a new method of Radical Basis Function (RBF) neural network was used.

针对PSD非线性对激光测平仪测量范围和测量精度的影响，采用一种新方法——径向基函数神经网络算法。

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