结合像控点布设在国道219线（马关—西畴）段航测项目中的应用，对测区地形复杂、作业难度较大的航空摄影测量像控点布设方案、像控点的选取、采集以及精度评定等方面进行阐述。针对无明显标志点、作业难度较大的测区，提出可在航飞前制作并采集地标式外业像控点，待航飞结束后，再根据已布设像控点的分布情况、空三质量及测图精度要求选取特征点的像控布设方法，供类似项目应用参考。%Combined with the application of photogrammetric control point laying in the nation highway 219, this paper introduces the photogrammetric control point about layout scheme, selection, measurement and precision analysis. In the area of complicated terrain and unhandy measurement, we can mapping the photogrammetric control point of landmarks first before aerial photography. Then, according to the distribution of control point and the precision of aerotriangulation and mapping to select the feature point. The paper aims to provide a reference for similar projects.
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