关键词: 全球定位系统（GPS）精确度, 漂移点剔除, 多目标优化, 面积测量

Abstract: In order to improve forest land area measurement of forestry production survey precision and work efficiency, handheld GPS in forest land area measurement exists some problems such as data point selection method and vector method, it proposes GPS forest area measure method based on Android. It constructs the evaluation function and defines two selection principles, based on multi-objective optimization principle, it reduces the number of points while ensuring accuracy of GPS points. It uses the azimuth angle and the area of the spherical distance to calculate area avoiding the error which caused by latitude and longitude coordinates transformation when it realizes vector method calculating the polygon area. Measure results show that the method can satisfy the requirement of forest land area measurement, and accuracy is higher than common method.

Key words: Global Positioning System（GPS） accuracy, drift points eliminating, multi-objective optimization, area measurement