A real-time robust Method of System Error Registration based on the Sorting of doubly linked List

System error registration is an important content of space-time registration, which is the premise of the fusion of multi-source measurement data. Aiming at the complex electromagnetic environment interference, the unrobustness of traditional registration method was verified. A real-time median estimating algorithm of slowly varying sequence based on the sorting of doubly linked list was designed. On the basis of which, a robust system error registration method based on fusion detection and real-time median estimation was put forward. The registration method proposed in this paper, of which the application in time-varying system error processing was also analysed, was tested with measurement data to be effective and robust in engineering application.