Voice Multilateration System

Burczyk, Robert; Cwalina, Krzysztof; Gajewska, M.; Magiera, Jarosław; Rajchowski, Piotr; Sadowski, Jarosław; Stefański, Jacek

doi:10.3390/s21113890

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…The bypass VCS is set to monitoring mode, designed to minimize background noise and interference as much as possible while receiving and recording clean speech data that is theoretically free from disturbances such as noise. Thus, the aforementioned collection of original noisy and clear speech data pairs is achieved [34].…”

Section: Databasementioning

confidence: 99%

Non-Intrusive Air Traffic Control Speech Quality Assessment with ResNet-BiLSTM

Wu,

Li,

2023

Applied Sciences

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In the current field of air traffic control speech, there is a lack of effective objective speech quality evaluation methods. This paper proposes a new network framework based on ResNet–BiLSTM to address this issue. Firstly, the mel-spectrogram of the speech signal is segmented using the sliding window technique. Next, a preceding feature extractor composed of convolutional and pooling layers is employed to extract shallow features from the mel-spectrogram segment. Then, ResNet is utilized to extract spatial features from the shallow features, while BiLSTM is used to extract temporal features, and these features are horizontally concatenated. Finally, based on the concatenated spatiotemporal features, the final speech quality score is computed using fully connected layers. We conduct experiments on the air traffic control speech database and compare the objective scoring results with the subjective scoring results. The experimental results demonstrate that the proposed method has a high correlation with the mean opinion score (MOS) of air traffic control speech.

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Section: Databasementioning

confidence: 99%

Non-Intrusive Air Traffic Control Speech Quality Assessment with ResNet-BiLSTM

Wu,

Li,

2023

Applied Sciences

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“…Крім того, використання єдиної частоти у каналі запиту в розглядаємих радіолокаційних системах призводить до високої щільності сигналів запиту і, як наслідок, до внутрісистемних завад значної інтенсивності [32][33][34][35]. Зазначені фактори призводять як до зниження якості обробки сигнальних даних і пропускної спроможності літакового відповідача [36][37][38], так і до суттєвого зниження завадостійкості [39][40][41][42][43] інформаційних систем спостереження повітряного простору, що розглядаються.…”

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Comparative analysis of noise immunity of the information transmission channel of secondary radar systems

Свид¹,

Vorgul

Starokozhev³

et al. 2022

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This paper presents the conducted assessment of noise immunity of the request signal transmission channel and response channel for flight information of secondary radar systems as part of aircraft responders. The considered system is an open single-channel queuing system with refusing due to the action in the request channel of intentional and unintentional correlated and uncorrelated (intra-system) interference and ground-based receivers that receive, process and decode flight information in the presence of fluctuation and intra-system interference in the receiving channel. The results of assessing the noise immunity of the aircraft responder in the form of the aircraft responder’s readiness factor under the action of internal and deliberate interference are given. It is shown that the principle of constructing an aircraft responder and the principle of servicing request signals and transmitting flight information do not allow ensuring acceptable probabilities of obtaining flight data at ground control points.

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