A Sharp-Peak Model Describing the Fast RSOP Induced by the Lightning Strikes and Its Tracking Method

Abstract

A model simulating the fast SOP variations during thunderstorm weather was proposed using a sharp-peak-pulse model. With this model, a EKF based RSOP tracking algorithm was also proposed exhibiting a powerful performance compared with CMA.

A flexible EKF/CKF switching scheme with fast frequency offset estimation method compensating fast RSOP induced by the lightning strikes

“…The CKF is used to compensate for fast RSOP, which poorly compensates under slow RSOPs. When a sudden change in RSOP occurs, the parameter tracking curve of the EKF will also produce a corresponding sudden change [6] , where a threshold can be set. For this reason, we use a mathematical model of lightning strikes to verify the abrupt parameter changes and to establish a threshold value for the EKF/CKF switching scheme.…”