Detecting and Repairing Cycle Slips in GPS Single Frequency Carrier Phase Using Lowpass

A gross-error detecting technique usually used in time series analysis,double lowpasses gross-error detecting technique,is used to detect and repair cycle slips in GPS single frequency carrier phase,the data windows width v_(max) and threshold coefficient k are given.An iterative algorithm utilizing lowpasses to calculate cycle slips is developed.Examples reveal that they are very simple operationally and can detect very small cycle slips.