jgg     2015 35 (2):  283-286    ISSN: 0412-1961  CN: 21-1139/TG A Tropospheric Delay Prediction Model based on Spectrum Analysis  and the AR Compensation 1〓School of Transportation Engineering, Changsha University of Science and Technology,  960 South-Wanjiali Road, Changsha 410004,China 2〓College of Mechatronics, Engineering and Automation, National University of Defense Technology,  109 Deya Road, Changsha 410073,China Received: 2014-04-03  Revised: null  Online: 2015-04-15 Supporting info