Abstract of Projects

Regional Airspace Capacity Enhancement - ASEAN Pilot

  • Use of SAAM and other modelling / simulation tools to conduct analysis of airspace structure and traffic flows through the region and provide solutions for capacity and efficiency enhancements.

  • Research subjects includes network and local capacity planning, airspace improvement, analysis of infrastructure improvements with technical enablers, and new route structure and procedures

ASBU and ATM Modernisation

  • Conduct R&D to support the implementation of ICAO ASBUs for Singapore and for the region

  • Research focus includes analytical research, real time & fast time modelling / simulation, business case analysis and development of implementation plan

  • Initial tasks include the ASBU Block 1 definition with unique Singapore requirements and the development of the business case

  • 4 ASBU modules have been identified as the initial focus areas

  • Future tasks include the continued R&D and implementation support to Block 1 evolving to Block 2 and Block 3 for Singapore as well as the region

An Integrated Surface Traffic Planning Approach for Combined Arrival-Departure Management and Runway Optimization.


In this project, the first goal is to develop optimization models and algorithms that support an integrated solution for simultaneously optimizing both arrival and departure flight sequences. We will develop a “load balancing algorithm”, where the objectives are to maximize runway utilization rate subject to several runway operational constraints. The load balancing algorithm will be implemented by using Changi 3-runway configuration data as a test bed. Next, we will consider the problem of allocating gates by delaying this process as close as possible to the arrival time of the aircraft. Based on current and projected arrival rates, and the taxiing distances for arriving and departing aircraft, an optimal gate allocation scheme will be prescribed. In the final step, we will look into integrating these new solution methodologies at Changi airport using flexiGuide to develop the basis for an integrated surface traffic management solution at Changi airport.

4D Trajectory-based Flight Profile Management for Sustainability and Resilience


4D Trajectory Representation in SESAR, Factsheet, 2010

The rapidly growing aviation demand in Singapore has imposed a great deal of stress on Changi’s airspace capacity. Flight schedules are likely to be interrupted due to ATCo and system overloads, as demand surges towards maximum capacity limits. An important aspect of relieving Changi’s airspace capacity is to move away from the present clearance-based ATM towards a “trajectory based management system”. Trajectory-based Operations (TBO) utilize the concept of a 4D trajectory of an aircraft to ensure closely spaced, conflict free flights, which can result in increased airspace capacity. In TBO, future trajectories of all aircraft will be used as a basis for separation and efficient air traffic flow. 4D trajectories are predicted and regularly updated, which are used to resolve conflicts, avoid dangerous weather conditions, circumvent restricted airspace, and compute efficient flight paths in an integrated manner. A TBO approach provides flexibility for pilots to navigate along a user-preferred trajectory as judged by the airlines’ economic and environmental criteria. We aim to develop a Trajectory-based Flight Profile Management system that maximizes flight profile efficiency thereby reducing environmental impact and enhancing robustness.

Enhancement of Wake Vortex Decay in Close Airport Proximity


We propose to study the effect of installations upwind of the threshold of a runway to enhance the decay and destruction of wake vortices. The quick decay of the vortices is especially important over the runway, where airplanes operate in close proximity to the ground, and hence, the wake vortices may have a catastrophic influence on the control of a trailing aircraft. The installations, that we propose, are barriers of approximately 9m height that are to be positioned near the airport perimeter. We propose to perform high-fidelity simulations to simulate the propagation and decay of realistic wake vortices with and without these structures. We will provide design recommendations for the implementation of these obstacles on Changi airport

Dynamic Spectrum Access Enabled Cognitive Radio based Sustainable Air-to-Ground Communication System


Air-traffic is forecasted to double the current level by 2025. As air-traffic increases, spectrum scarcity due to current static spectrum allocation would become a bottleneck of Air-to-Ground (A/G) communications, which will affect air-traffic management industry growth. This project will develop a cognitive radio based A/G communication network that provides dynamic spectrum access to airplanes to overcome the spectrum scarcity problem. It will provide the framework for sustainable A/G communications by enabling airplanes with opportunistic spectrum access for high bandwidth seamless communication. Using green communication, the system will minimize on-board power consumption and reduce ground idle time of aircrafts by sending a multitude of aircraft health data to ground well ahead of arrival at airport enabling maintenance staff to immediately attend the aircraft. The outcome of this project would benefit Singapore to move up from its current position as the leading air-hub in South-East Asia to that in Asia-Pacific and beyond.​​

Low Complexity Spectrum Sensing using Variable Digital Filters for Cognitive Radio based Air-Ground Communication

Source from IEEE