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(IVAR) - Final Report - Strategic Environmental Research and ...

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Method<br />

We explored the plots <strong>and</strong> tracks data structure using the TDV application to illustrate the data<br />

fields that are saved for each scan of the radar, including those fields that would be required as<br />

input to a GIS. We exported selected tracks in the kml format, which is a widely used language<br />

that links target data to its corresponding location in earth coordinates so the data can be<br />

represented in 2- or 3-dimensions in a GIS application. <strong>Final</strong>ly, we viewed some of these data in<br />

a 3-dimensional earth browser.<br />

Results<br />

The DRP saves GIS-relevant data in every track update. The relevant data fields can be<br />

extracted from plots <strong>and</strong> tracks data files or from the RDS database. Once extracted, the data can<br />

be exported in kml, a widely used open-source GIS format. The extraction process can be done<br />

in real time or by post-processing archived data.<br />

The following are three examples of extracting geospatial data from plots <strong>and</strong> tracks data <strong>and</strong><br />

using a GIS to display these data.<br />

Real-Time Data to a GIS<br />

We demonstrated the near real-time extraction of GIS data in Performance Criterion SD2.1<br />

(Section 6.4.1.2). In the present demonstration, we extracted <strong>and</strong> wrote target data to kml, <strong>and</strong><br />

served the data from the RDS, all in real time. We then used Google Earth to view the live target<br />

data (served from the RDS) from all three SEA radars simultaneously - see Figure 6-75. To<br />

distinguish between the different feeds from the three radars, we configured Google Earth to<br />

color-code the targets <strong>and</strong> the corresponding timestamps from each radar.<br />

Figure 6-75. Live feed from three radars at SEA, as viewed in Google Earth.<br />

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