Subjunctive cutting-line level adjustment method is a new data processing method to enhance the accuracy of airborne survey data and their chart's quality.

虚拟切割线调平法是一种提高航测资料精度和图件质量的新的数据处理方法。

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The airborne laser scan system for acquiring 3d terrain data directly is better than the conventional survey. There are the advantages of high precision, high density, and high efficient and low cost.

激光三维扫描技术可以直接获取地面三维数据，比传统测量方法具有高精度、高密集、高效率和成本低的优点。

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