Performance Evaluation of Baseline-dependent Averaging Based on Full-scale SKA1-LOW Simulation

The Square Kilometre Array (SKA) is the largest radio interferometer under construction in world. Its immense amount of visibility data poses a considerable challenge to subsequent processing by science processor (SDP). Baseline dependent averaging (BDA), which reduces based on baseline distribution interferometer, has become focus SKA SDP development. This paper developed and implemented full-featured BDA module Radio Astronomy Simulation, Calibration Imaging Library (RASCIL). Simulated observations were then performed with RASCIL full-scale SKA1-LOW configuration. performance was systematically investigated evaluated simulated data. experimental results presented that reduced about 50\% 85\% for different time intervals ($\Delta t_{max}$). In addition, $\Delta t_{max}$ have significant effect imaging quality. smaller t_{max}$, degradation