Images reconstructed through PSSD (left panels) and the previous method (right panels) under the condition that the number of baselines is limited by a, b 100%, c, d 28%, and e, f 8%. Only a long-term systematic error was included in the simulations; shot noise was not considered while investigating how the limited number of the baselines affects the image reconstruction. The OPD rms error was set to 3.8 nm.