As the core technology of next-generation air transportation systems, Automatic Dependent Surveillance-Broadcast (ADS-B) is becoming very popular. However, many (if not most) ADS-B devices and implementations support rely on Garmin’s Datalink 90 (GDL-90) protocol for data exchange encapsulation. This makes it essential to investigate integrity GDL-90 especially against attacks subsystem availab...

Specific emitter identification (SEI) is a highly potential technology for physical-layer authentication that one of the most critical supplements upper-layer authentication. SEI based on radio frequency (RF) features from circuit difference, rather than cryptography. These are inherent characteristics hardware circuits, which difficult to counterfeit. Recently, various deep learning (DL)-based...

The United States Federal Aviation Administration (FAA) Alternative Positioning, Navigation, and Timing (APNT) program is examining the use of existing FAA terrestrial infrastructure to provide navigation capable of continuing US National Airspace System (NAS) operations should Global Navigation Satellite System (GNSS) position, navigation, and timing (PNT) services be unavailable. The approxim...

We report on an automatic method for discovering an appropriate model topology for each context-dependent phoneme, allowing for such phenomena as reduced pronunciations and substituted phonemes. The method leads to a reduction in the word error rate on both the Wall Street Journal and Broadcast News databases.

In this paper, we report on language modeling and acoustic modeling studies for Japanese broadcast news speech recognition. We constructed a language model that reduces recognition errors by utilizing context-dependent readings of Japanese characters. We also introduced filled-pause modeling into the language model. To improve the model’s performance for a series of sentences spoken by one spea...

This article presents an overview of the existing acoustical corpuses suitable for broadcast news automatic transcription task in the Slovak language. The TUKE-BNews-SK database created in our department was built to support the application development for automatic broadcast news processing and spontaneous speech recognition of the Slovak language. The audio corpus is composed of 479 Slovak TV...

The study of managing risk in aviation is the key to improving flight safety. Compared other operation phases, approach and landing phases are more critical dangerous. This aims detect analyze unstable approaches Taiwan through historical data. In addition weather factors such as low visibility crosswinds, human also account for a large part risk. From accidents studied stochastic report Flight...

This paper is concerned with automatic classification of broadcast news stories based on speaker roles such as anchor, reporter and others. The story classification is the first step for many related tasks such as browsing, indexing, and summarising the news broadcast. We use broadcast news audio and its automatic speech recogniser transcripts to implement the classification system. It builds o...

Automatic transcription of telephone speech involves additional challenges compared to wideband data processing, mainly due to channel limitations and to particular characteristics of conversational telephone speech. While in TV speech recognition applications, such as automatic transcription of broadcast news, the presence of telephone data is nearly insignificant (less than 1 %), in most radi...