The Discrete Address Beacon System/Air Traffic Control Radar Beacon System/ATCRBS IFF Mark XII System (DABS/ATCRBS/AIMS) Performance Prediction Model
IIT RESEARCH INST ANNAPOLIS MD
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The Discrete Address Beacon System DABS is to be gradually phased into the existing Air Traffic Control Radar Beacon System ATCRBS in the 1980s. The DABS selective address feature is designed to alleviate the ATCRBS problems of over-interrogation and synchronous garble. The FAA requested that the Electromagnetic Compatibility Analysis Center ECAC develop a computer model with the capability to predict mutual interference arising in a mixed secondary-surveillance radar environment. The nature of the DABS interrogation schedule required that the model be a time-event store simulation. The model inputs are selected from the ECAC data base and consist of the characteristics of a ground and air deployment of sensors and transponders. Detailed characteristics of a sensor-of-interest So are among the inputs. The model output is primarily a record of the events that were predicted to occur during a simulation period. The performance of each transponder is described by its reply history during the time in which the equipped aircraft is in the So mainbeam. The fruit rate at the So is predicted, and the performance of the subject sensor is represented by the results of DABS transactions and ATCRBS target evaluations. Other summary outputs are available from the model, including interrogation rates, sidelobe suppression rates, and the identity of equipments that cause observable interference.
- Active and Passive Radar Detection and Equipment
- Radiofrequency Wave Propagation