Transactions of Nanjing University of Aeronautics & Astronautics
High-Fidelity Reconstruction of Approach Deviations: Integrating QAR Flight Data with ILS Electromagnetic Signal Physics
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
Precise detection of flight path deviations during the approach phase is critical for identifying operational risks and enhancing aviation safety. However， existing monitoring methods often face significant challenges in distinguishing between environmental signal distortions and operational handling errors due to the lack of high-fidelity physical reference models. To address these limitations， this study establishes an integrated simulation framework for required navigation performance （RNP） and instrument landing system （ILS） approaches by synthesizing quick access recorder （QAR） data with rigorous navigation modeling. A site-specific “digital twin” of Linfen Yaodu Airport is constructed， incorporating 3D trajectory reconstruction based on Mercator projection and Baro-VNAV logic， alongside an electromagnetic simulation of ILS signals utilizing antenna array and image theory to model multipath effects. Empirical validation demonstrates that the model accurately reproduces critical signal characteristics， including interference fringes and secondary glide slope lobes. Furthermore， quantitative regression analysis establishes a definitive linear correlation （Keywords:
Project Supported:
This work was supported by the National Natural Science Foundations of China （Nos. U2333202，52272351） and the Civil Aviation Capacity Building Fund Project （No. ASSA2024/121）.
Clc Number:
V351
Articles
Mobile website
