The authors would like to thank Sergey Fomel, Shan Qu, Yaru Xue, Wei Chen, Min Bai, Dong Zhang, Jianyong Xie, Josef Paffenholz, Araz Mahdad, Ray Abma, Min Zhou, Qie Zhang, and Zhiyong Jiang for inspiring discussions on the simultaneous source separation problem. Yangkang Chen appreciates FairfieldNodal and BP America for offering summer internships during his PhD study at UT Austin. The authors also thank Herve Chauris, S.Mostafa Mousavi, and an anonymous reviewers for constructive comments. The research is partially supported by the “Thousand Youth Talents Plan”, the starting fund from Zhejiang University, National Natural Science Foundation of China (Grant No. U1262207), National Engineering Laboratory of Offshore Oil Exploration, 973 Program of China (Grant No. 2013CB228603), and the National Science and Technology Program (Grant No. 2016ZX05010002-002).