Download 01.Aerospace and Electronic Systems by John G. Webster (Editor) PDF

By John G. Webster (Editor)

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For example, in the radar subsystem, the units include its signal processor and its data processor. In order to test a system adequately, each of its lowest-level items (units) must be tested. As the units affect and depend upon each other, another layer of testing addresses that layer of dependences. In the same fashion, subsystem testing is performed and integrated with associated subsystems. It is important to test not only at the unit and the subsystem level, but at the system and operational level.

Placement of multiple antennas requires minimizing the effects of crossed frequency transmissions. Techniques for this include antenna placement, filtering, and timing. This presents another 12 AIRCRAFT COMPUTERS challenge for aircraft computers to sort and process these multiple signals. Perry and Geppert (4) show how the aircraft electromagnetic spectrum is becoming busy, and thus, dangerous for aerospace communications. Legacy Systems. Legacy systems are fielded aircraft, or aircraft that are in active use.

In order to test a system adequately, each of its lowest-level items (units) must be tested. As the units affect and depend upon each other, another layer of testing addresses that layer of dependences. In the same fashion, subsystem testing is performed and integrated with associated subsystems. It is important to test not only at the unit and the subsystem level, but at the system and operational level. The system level is where the subsystems are brought together to offer the system functionality.

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