Method for identifying carrier motion mode based on time-domain differential characteristic

A method for identifying a carrier motion mode based on a time-domain differential characteristic, said method comprising:

• (a) assuming that a data sequence collected in a period of time is xi (i=1, . . . , k), performing a difference operation on the sequence xi to obtain a difference sequence di (i=1, . . . , k);
• (b) performing a sign obtaining algorithm on the difference sequence di to obtain a sign sequence si (i=1, . . . , k) and performing a progressive multiplication algorithm on the sign sequence to obtain a sequence gi (i=1, . . . , k);
• (c) defining a positive integer N and performing an accumulation algorithm on the sequence gi with length N to obtain a sequence zi (i=1, . . . , k);
• and
• (d) setting thresholds T1 and T2 based on a value of N and performing motion mode identification.