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In the previous article we covered what asset location systems (ALS) are and the features and benefits they offer. In this article we explore the various features to be considered when acquiring an ALS and steps to be taken. We discuss what users are saying they want in an ALS, including the results of a survey of vehicle tracking system users and providers.
The vertical component obtained from the Global Positioning System (GPS) observations is from the ellipsoid (a mathematical surface), and therefore needs to be converted to the orthometric height, which is from the geoid (represented by the mean sea level). The common practice is to use existing bench marks (around the four corners of a project area and interpolate for the rest of the area), but in...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.