Abstract
Secondary Surveillance Radar (SSR) has capability of datalink including Downlink Aircraft Parameters (DAPs). DAPs is expected to improve air traffic surveillance function and performance. DAPs is classified into 2 groups; Elementary surveillance (ELS) and Enhanced surveillance (EHS). ELS and EHS are being deployed within some part of European airspace. Preparing for future use of DAPs in Japan, Electronic Navigation Research Institute (ENRI) developed SSR mode S sites and has been collecting DAPs data. In order to employ DAPs for Air Traffic Control (ATC) service, the reliability of data is significant. ENRI started development of DAPs monitoring system, applying algorithms developed by Lincoln Laboratory which use acceptability thresholds based on the measurement accuracy of Mode S sensor to validate DAPs values. This paper reports the examination results of tests for static information of avionics configuration and status, and preliminary analysis of test results for DAPs dynamic values.
Published Version
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