Recursive Spline Filter Algorithm for Orbit Determining Utilizing Range Rate

In respect that traditional methods have essential deficiency for orbit determining utilizing range rate only,filter based on recursive spline modeling is derived.The filter can fit trajectory maneuvers effectively by iteratively recursive updating model parameters.Simulation and actual test indicate that the filter performs robustly,and has higher accuracy during smooth fragments than traditional methods.Although developed for boost phase and velocity measurements,the filter has universality in principle.