Investigation on deinterleaving performance of satellite-based single antenna ADS-B signals based on different m-reconstruction factors
Automatic Dependent Surveillance Broadcast (ADS-B) has played an important role in modern aviation industry. Compared with land-based ADS-B systems, satellite-based systems have some new features, including wider coverage, lower signal-to-noise ratio, and smaller signal power differences. Due to the...
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| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/173965 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Automatic Dependent Surveillance Broadcast (ADS-B) has played an important role in modern aviation industry. Compared with land-based ADS-B systems, satellite-based systems have some new features, including wider coverage, lower signal-to-noise ratio, and smaller signal power differences. Due to these characteristics, the conflict of ADS-B signals at the onboard ADS-B receiver is more severe.
Spaceborne equipment is usually limited by weight and space, while single antenna designs are lighter and occupy less space, making them suitable for satellite missions with strict requirements for weight and volume. Therefore, it is necessary to consider using a single antenna receiver for ADS-B signal reception. However, the problem of ADS-B signal interleaving has become more complex than array antennas, and traditional array antenna projection algorithms are no longer applicable to this system.
Based on this, this dissertation studies the impact of virtual multi-channel reconstruction factors on the algorithm performance of decoding ADS-B interleaved signals with a single antenna on satellite basis. For the signal interleaving problem of a single antenna, this dissertation determines the value pattern of the virtual multi- channel reconstruction factor based on the low rank decomposition of the signal matrix. After determining the reconstruction factor, the ADS-B interleaved signal separation was achieved using an improved Projection Algorithm Single Antenna (PASA) algorithm, and the basis for the value of the reconstruction factor and its impact on algorithm performance were analyzed. |
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