SDSS has significant value in making decisions on issues that have a geographical component. On most occasions, it is employed to enhance the selection of suitable scenarios, policies, interventions, projects or plans.  This is because the SDSS has the ability to resolve various inter-related complexities. It helps to unravel problems in situations where the problem itself and objectives of the decision maker cannot be defined fully (Thurston et. al., 2003). This is made possible by the system’s ability to combine various analytical models. When the models are applied in the system, they help in exploring available options by generating a series of alternatives. Among the inter-related complexities that can be solved by the use of SDSS are large, disparate data sets that include image, numerical, text, map and other forms. A good example that can be used to show the value of SDSS is the importance that spatial data has gained over the years. As the world population increases, there is increased demand for well-planned use of the land available. This use tends to demand spatial analysis in the development of accurate maps (Thurston et. al., 2003).

During mission planning within SDSS, that is when the GIS integrate with the GPS. The role of the GPS is to determine when to be in the field.  This is usually based on the availability of satellites within clear range. The GPS is fitted with software that grants mission planning functions. It usually includes four modes; tracking mode, integration and storage mode, processing mode and telecommunications mode. Tracking mode helps in enabling all satellites to be tracked simultaneously. Integration and storage mode allows for large-capacity hard drives with the ability to store voluminous data files. Processing mode on the other hand, ensures that the voluminous data is processed in an efficient and quick manner. This ensures that it is possible to perform the required mathematical calculations in real-time (Thurston et. al., 2003). Telecommunications mode on its part ensures transfer of information with various devices on a network. The GIS on its part helps in obtaining and importing spatial data into various compatible formats. Through this, it becomes possible to view different types of spatial data within the same time. The GIS also makes it possible to query the data and get the answers in map format.

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