Generalized High-Precision Simulation for TT&C Channels Using B-Spline Signal Processing

Tracking, telemetry, and command (TT&C) channel simulators need to accurately simulate the satellite motion parameters and dynamic transmission delays in TT&C channels. In this letter, a generalized high-precision simulation method using B-spline interpolation and differentiation is proposed. It regenerates the motion parameters with a high sampling rate using only the available distance data with a low sampling rate, and delays the arbitrary band-limited TT&C signals by the transmission delay resulting from the obtained distance. A modified recursive filter structure is constructed to implement simultaneous B-spline interpolation and differentiation with low implementation complexity. Compared with conventional methods, the proposed approach simulates the motion parameters with higher precision and preserves their continuity.