Ralf Heidger

  • Citations Per Year
Learn More
An aircraft is most at risk for an accident when it's still on the ground - when taxiing before takeoff or after landing. This is because traffic throughput on the ground is limited by inadequate airport infrastructures and is often incapacitated during conditions of poor visibility. The INTERVUSE project, funded by the European Commission, aims to address(More)
For several decades rotating sensors have been employed as the workhorse for air traffic surveillance purposes. Therefore, their measurement characteristic is widely understood. With the adoption of ADS-B and MLAT / WAM, experiences gained from rotating sensors are no longer valid in all aspects. This contribution investigates the specific error(More)
The ADS-B position of an aircraft is generated by the aircraft itself, as opposed to e.g. the radar or MLAT position, and then broadcasted and transmitted to a tracking system via network. The intention of this paper is to discuss the necessary security mechanisms and to propose specific algorithms to safely deal with this type of position information.(More)
Motivated by the need of ATC systems for insideness, intrusion and collision detection, a number of efficient algorithms were designed and implemented. For the determination of the insideness of points in polygons, a simple generalization of the commonly used zero winding and even-odd rules is presented, and, building thereupon, a point-in-polygon algorithm(More)
This paper presents trajectory computation algorithms for two separate applications considering different requirements regarding accuracy and computational performance. The modeling of the longitudinal motion is primarily based on Eurocontrolpsilas BADA (base of aircraft data), while the simulation of the lateral motion uses techniques from the flight(More)
The PHOENIX radar data processing system of the German air navigation service provider “Deutsche Flugsicherung” (DFS) has been developed for the German airspace as a one model Kalman Filter tracker (1MKF), which was efficient for a multiradar coverage situation as in Germany. Since the Portuguese airspace is mainly over sea, large areas of monoradar(More)
The approach presented in this paper aims to support developers by delivering methods and IDE-based tools for semi-automatic source code instrumentation that improve efficiency and consistency of the instrumentation process, and thus reduces the overall effort to be put into instrumentation. Our solution focuses on code generation for logging and(More)
SESAR is supposed to boost the development of new operational procedures together with the supporting systems in order to modernize the pan-European air traffic management (ATM). One consequence of this development is that more and more information is presented to –and has to be processed by– air traffic control officers (ATCOs). Thus, there is a strong(More)
In this paper, an approach for runtime analysis and automated knowledge-based IT management is presented and applied to the example of an Air Traffic Control (ATC) system. An analysis method has been developed, which combines the strengths of formal ontologies and Complex Event Processing (CEP). Thereby, the configuration of the whole analysis process is(More)