基于Android平台的GPS林地面积测量-计算机工程与应用

Computer Engineering and Applications 计算机工程与应用 2014 ，50(23 ) 261

基于Android 平台的GPS 林地面积测量

赵 方，张 洁，赵天忠，闫 民

ZHAO Fang, ZHANG Jie, ZHAO Tianzhong, YAN Min

北京林业大学 信息学院，北京 100083

School of Information Science and Technology, Beijing Forestry University, Beijing 100083, China

ZHAO Fang, ZHANG Jie, ZHAO Tianzhong, et al. GPS forest area measurement based on Android. Computer Engi-

neering and Applications, 2014, 50 (23 )：261-266.

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 selec-

tion 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

摘 要：为提高林业生产调查中林地面积测量的精度和工作效率，针对目前手持GPS 进行林地面积测量数据点处理

和通过坐标转换计算面积容易引入误差的不足，提出一种基于Android 平台的GPS 林地面积测量方法。该方法一方

面基于多目标优化原理构造评价函数并定义两条筛选原则，在保证采样点精度和曲率的情况下尽量减少点数量；另

一方面在实现向量法时，根据方位角和球面距离计算面积，避免经纬度坐标转换引起的误差。实际测量结果表明，

该方法能完全满足林地面积测量要求，且精度高于常规坐标转换法。

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

文献标志码：A 中图分类号：TP311.1；S757.2 doi ：10.3778/j.issn. 1002-8331.1303-0172

1 引言 工作复杂误差大；根据文献[5]研究表明GPS 与罗盘仪

林地面积测量是林业生产调查的重要内容，在森林