4Piotto M, Bruschi P, Butti F, et al. 2D anemometer based on mul- tichannel single chip flow sensor [ M ]. Berlin : Springer Nethe, r- lands ,2010.
5Hall James S. Electrical perpendicular fluid flow measurementwith a spatial array of ultrasonic transducers [ C l ff Proceedings of IEEE International Ultrasonics Symposium ,2009:741 -744.
6Michael Unser, Dimitri Van De Ville. The pairing of a wavelet ba- sis with a mildly redundant analysis via subband regression [ J ]. IEEE Transactions on Image Processing,2008,17 ( 1l ) :2040 -2053.