® ® In many application areas, this is not enough: Geo- spatial and temporal correlations between the data ArcGIS + GeoTime : GIS technology should be studied, so that, on the basis of this insight, the available data - more and more numerous - can to support the analysis of telephone be translated into knowledge and therefore in appropriate decisions . In the area of security, to name an example, all this results in the predictive traffic data analysis of the spatial-temporal occurrence of crimes. Lastly, a technologically advanced GIS platform must Giorgio Forti, Miriam Marta, Fabrizio Pauri ® ensure data sharing and enable the world of mobile devices (system of engagement).
® There are several ways to share data / information, all supported by ArcGIS, such as: sharing within a single Historical mobile phone traffic billboards analysis is organization, according to the profiles assigned becoming increasingly important in investigative Figure 2: Sample data representation of two (identity); the sharing of multiple organizations that activities of public security organizations around the cellphone users in GeoTime may / should share confidential data (a very common world, and leading technology companies have been situation in both Public Security and Emergency trying to respond to the strong demand for the most Other predefined analysis features are already Management); public communication, open to all (for suitable tools for supporting such activities. available (automatic cluster search, who attends sites example, to report investigative success, or to of investigation interest, mobility compatibility with communicate to citizens unsafe areas for the Originally developed as a project funded in the United participation in events, etc.), allowing considerable frequency of criminal offenses). States by the Defense Advanced Research Projects time savings, especially when long time series are in Agency (DARPA), GeoTime by Uncharted Software, play. Mobile (geographic) enabler is another key to is surely among the most used tools (18 countries, operating in order to ensure communication in two 275 public security units and thousands of users). GeoTime can also use GPS data as a data source, important areas: on the one hand, between use, effectiveness of visual representation, specific allowing you to combine this information with data headquarters and field operators, in order to have an analyzes of the investigative and reporting world. from traffic. up-to-date operational scenario available and for the real-time update of the central database; on the other GeoTime integrates with the ArcGIS platform of Esri, 2. The Esri Geographic Platform for georeferenced reports sent by the citizens the world's leading geospatial solution provider, to themselves. provide the analyst with all relevant information for the ArcGIS area that is relevant for investigative purposes, In the examples above, we see a generic map in the enabling you to gain a better understanding of the background. A Geographic Information System (GIS) scenario being investigated. enables the management of additional 2D and 3D layer layers, which may contain any type of Figure 1: Example displaying a cellphone user's information that is associated with a geographic data in GeoTime. coordinate; In this case, we can use the position of 1. GeoTime the camcorders (with associated video files), BTS positions (and their characteristics), the theoretical The variables investigated from phone records are Trying to imagine the combination of the radiation area (and also the actual electromagnetic space-defined as the location roughly reconstructed contemporary representation of multiple users, it is coverage, if available) or real measures, residences based on the location of the mobile operators BTS-Base intuitive to think how the density at the top of the or places visited by suspects, just to name some data Transceiver Station and the associated time. For graph of representative points of multiple users types with an associated geographic component. consideration of the accuracy of the localization, refer to (proximity in space and time) is the clue of possible the two articles by G. Zambonini and C. Fusco, encounters between the suspects. Specifically, the All this information can therefore enhance the published in this same magazine. instrument offers the ability to automatically detect knowledge framework, integrate it and strengthen it; these situations by assigning time / time search GeoTime can use, instead of "mute" maps, maps and Figure 1 shows a possible representation mode with parameters (km / min). layers created and managed in the ArcGIS Figure 3: The ArcGIS platform in operating rooms GeoTime: at the top we see the movements over time (z environment, submitting to the analyst the data from axis) and at the bottom projection on a base map. Another possible space-time representation is that the telephone tabs enriched with all relevant shown in Figure 2. information relevant to the survey. 3. Conclusions The tabular is for a two-year time span, for a single cellphone user. In an intuitive way, from this In this case we see the people associated with two How easy it is to understand the use of a geographic The combination of advanced visual analysis tools representation we can already locate the location of the different utilities moving very similarly over time ("z" information system (GIS) goes far beyond the scope (GeoTime) with the information assets created and person's habitual residence, as well as the axis). The figure describes the overall range available, described above. We have already seen how a GIS is managed by a geographic information system, such displacements and the relative repetition frequency. but GeoTime also gives you the ability to present the first of all a system of records of all types of as ArcGIS, has proven to be very effective in timeline in a video and record it by creating a .WMV geographic information in order to guarantee, as does supporting investigative and efficient activities, file. It is also possible to manage, through the the ArcGIS platform, the management of the most enabling a significant saving of time spent in analysis timelines "Macro" and "Micro", selections of the advanced data sources (which have recently been of telephone tabs. The ArcGIS platform of Esri observed period to perform more detailed analysis. added drones), real time, exploded with the Internet of implements the three pillars of a GIS, system of 1 Zambonini G, Fusco C. “Geo-timing nei tabulati di traffico Things, and the big data. records, system of insight, system of engagement, at storico”, Giustizia e Sicurezza, numeri III/MMXV - prima parte the highest technological level. – e I/MMXVI – seconda parte. [email protected] – www.esriitalia.it
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