Then,we consider less number of searched elements among candidate symbol sets of each decoded component in medium to high SNR,and improve the better algorithm by sorting the decoded components from the strongest to the weakest,which accelerates the decoding speed and also makes up the lost performance by cutting down the number of searched elements to some extent.

After analyzing the effects of different sampling sites and different detrending methods on correlations between tree-ring width chronologies in the different frequency domains and their climate signals,we find 1.

The article mainly introduces the designing methods of meteorological aymbol character library,and its transplanting from one computer to another as well as the meteorological symbol inputting methods.

The automatic recognition of electro-symbol is the base of engineering drawing vectorization.

A method using bitmap as weather symbol to draw surface weather chart and using regular triangle net to draw the contours of meteorological elements are introduced in this paper.