The Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions(Great Wall Scholar,CIT&TCD20150320);the National Basic Research Program of China(project no.2015CB057201);National Natural Science Foundation of China(61176102,60976083and 60501007);Beijing Natural Science Foundation of China(3102014)
supported by the fundamental research grant of National Key Lab of Electronic Measurement Technology,PRC;国家863计划项目子课题(2007AA04Z352);国家自然科学基金项目(60501007)