Title: Field Area Checks using GPS Part 2: from Theory to Practice
Authors: KAY SIMON
Citation: GIM International vol. 20 no. 1 p. 43-45
Publisher: GITC, Netherlands
Publication Year: 2006
JRC N°: JRC31911
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC31911
Type: Articles in periodicals and books
Abstract: Classical surveying has focused on point positioning of well defined features on the ground - vertices which can be used to 'digitize' the boundary between two features. Most survey measurements emphasise linear or planar position, and do little to guarantee the area of the polygon measured. For example, most mapping services often give details of planimetric 'ambiguity' of points for different map scales, but do not accept responsibility for the area estimate. As we described in the first article, we found that a continuous collection of points neatly solved the problem and helped to cancel out random errors in the observations, giving a good estimate of a land parcel's area. But how exactly does this theory work?
JRC Directorate:Space, Security and Migration

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