Abstract:In recent years, the rapid development of China's Civil Aviation, the number of airports will reach more than 270 by the end of the "14th Five Year Plan", and gradually achieve the network coverage of transport airports. However, cluster effect caused by too dense spatial distribution among airports, which leads to complex coupling between adjacent airspace domains. Without de-coupling the space-time-domain resources within the multi-airports, it is difficult to improve the overall operation safety and efficiency. However, at present, operation optimization technology mainly focuses on a single local resource and does not consider from the perspective of global optimization, so only the locally optimal control strategy can be obtained. This paper provides an overview of Integrated Arrival and Departure and Surface Operations (IADS) technology to address global collaborative operational planning for Metroplex. This paper is divided into three parts. First, overview of arrival, departure and surface runway sequencing algorithms at home and abroad, and indicate existing problems and research limitations. Second, we propose an innovative IADS technology architecture, and analyzing its intrinsic components and logical associations. Third, w review IADS re-search from four aspects: Combined Arrival-Departure Scheduler Problem, Surface Manager Problem, Arrival-Departure Route Selection Problem and Time-based Point-in-Time Sequence Control Problem. This paper provides a theoretical foundation for advancing the integrated air-surface operation and enhanced global control of Metroplex, and provides technical support for the development of “World-class Metroplex” and “Intelligent air traffic control” etc,.