Abstract: A method and system for tracking the real-time positions of airport ground vehicles, and integrating the positional data into the Automatic Dependent Surveillance-Broadcast (ADS-B) network infrastructure. The system may include one or more ground receiver stations that receives positional telemetry data from one or more airport ground vehicles, and transmits the ground vehicle positional data to a centralized ground base station. A computer system connected to the ground base aggregates the ground vehicle telemetry data from one or more ground vehicles, converts the aggregate telemetry data into an ADS-B compatible data protocol, and integrates that data into the ADS-B network infrastructure for dissemination and reporting across the ADS-B network. The method enables the use of and dissemination of ADS-B information for ground vehicles without the need for ADS-B transponders on each ground vehicle.

Abstract: A system for applying and recovering de-icing chemicals from a surface. The system includes a spray system for applying a de-icing chemical to the surface and draws the de-icing chemical from the surface. The de-icing chemical and contaminants are conveyed to a reservoir to form a combined solution. A recovery system includes a filter device for removing solids from the combined solution, at least one sensor for measuring a property of the combined solution, and a source of additive chemical. A controller is configured to determine a property of the combined solution based on signals provided by the at least one sensor, move a valve to an open position to cause the additive chemical to mix with the combined solution if the property is less than a predetermined minimum value, and move the valve to a closed position if the property is greater than the predetermined minimum value.