| 摘要 |
Separate operating condition data measurement sub-systems are provided for each of a plurality of navigation signal transmitters, each sub-system including its own microprocessor and data store, with the data being collected and stored in a collective data store for a plurality of sub-systems, and interconnections being provided to a remote central station computer, data processing capability being provided by the microprocessor in the sub-system, by a data processor associated with the collective data store, and by the central station computer, with a predetermined division of data processing functions.
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