1. Tianjin Key Laboratory of Optoelectronic Detection Technology and System, Tianjin, P.R. China
2. School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin, P.R. China
3. Institute of Textile Composites, Tianjin Polytechnic University, Tianjin, P.R. China
4. School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, Wollongong, Australia