Abstract
In this paper, TTFFD according to the length of CED and the length of message frame is analyzed in order to design the structure of message of new satellite navigation signal. The GPS CNA V and GPS CNA V-2 message is used structures as the basis for the message structure of the new navigation signal. In addition, the data rate of the navigation data other than the CED during the maximum broadcast interval of CED is analyzed. From the results, TTFFD is the best in the structure of CNA V-2 format. However, considering both TTFFD and the data rate of additional navigation information, it is thought that CNA V format based message structure is appropriate as a message structure of new satellite navigation signal.
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