Solving the task involves three approaches. The concept, as illustrated in Figure 2, reflects the need for measurements with different platforms in desired environments as well as the possibility to gather data based on simulation. The three approaches to obtain realistic user terminal are:
- The measurement data approach,
- The lookup table approach, and
- The statistical model approach.
The measurement data approach comprises a data gathering campaign, which results in State-Data (specified in Figure 2) describing the movement of a platform in a certain environment. This data can be used as direct input to the database or platform de-embedding is applied to obtain Terrain-Profile-Data, representing an excitation profile (position dependent height information). In this way it is possible to simulate dynamics for a different target platform at a desired velocity profile. The de-embedding method will be only considered for the LM environment.
The lookup table approach is based on available Terrain-Profile-Data. For the LM environment this data will be provided by third party contributors such as the BASt (road data) and the DB Netz AG (railway data). The procedure to obtain simulated user terminal dynamics from this data is similar to the second case of the measurement data approach. Again a parameterised platform model, a target velocity profile and a target mounting position of the PAT system can be defined by the user.
The statistical model approach is based on statistical distribution functions of Terrain-Profile-Data. With these statistics synthesized Terrain-Profile-Data can be generated to simulate terminal dynamics applying the user defined platform model and velocity. The parameterized generator is noted as in Figure 2.
Figure 2: Block diagram of the proposed concept
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The proposed approaches will cover the Land-Mobile and maritime environment.