Developing Android Application for Precise Geotagging Using RTK GPS Module

The use of cameras on smartphones with the addition of photo position information on photo metadata or often called geotagging extends over time. This is because in survey jobs that require extensive documentation of photographs, photo positioning information allows surveyors to recognize the location of photo objects in the survey and ease the process of data management. Currently, smartphones are equipped with positioning features using GPS and or Assisted-GPS (A-GPS) which can provide sufficient positioning for geotagging photos. However, in the execution of certain surveys there is a need for more precise positioning than the standard GPS/A-GPS positioning features of the smartphone. One way to improve geotagging position accuracy is to use an external RTK GPS module integrated with a smartphone. This paper discusses the making of Android-based smartphone applications for geotagging using an external RTK GPS module. In this paper also discussed the advantages and disadvantages of the applications that have been made, as well as the opportunities and limitations of the use of such applications.