ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Distributed fusion technology for multi-source landing guidance information
Received date: 2024-10-29
Revised date: 2024-11-27
Accepted date: 2024-12-23
Online published: 2024-12-30
Supported by
National Level Project
In the carrier-based aircraft landing process， to meet the requirements of high-precision and high-reliability relative navigation for carrier-based aircraft landing， a distributed fusion architecture and algorithm for multi-source landing guidance information are designed after comparing the limitations of various landing guidance fusion architectures. Firstly， the relative motion between the carrier-based aircraft and the mothership is analyzed， and the aircraft-ship relative inertial solution model is established using the inertial measurement of aircraft and ship， and the error propagation equation of relative inertial solution is derived. Secondly， a relative navigation sub-filter is designed based on the error propagation equation. Then， a fusion method based on calculated correlation is proposed for the two relative navigational sub-filters with correlation. By calculating the cross covariance matrix of the two combinatorial filters in real time， the fusion estimation is carried out to provide the flight control system with landing guidance information whose fusion accuracy is better than that of any relative navigational sub-filter. Moreover， this method provides real-time evaluation results of relative navigation fusion accuracy. Finally， simulation verification is carried out based on simulation data and test flight data. The results show that this method can improve the accuracy of relative navigation， accurately evaluate relative navigation errors， and solve the correlation problem existing in the fusion center processing in the distributed fusion architecture， so as to better assist the guidance and control of carrier aircraft landing.
Ligong LI , Chao ZHANG , Jingting SU . Distributed fusion technology for multi-source landing guidance information[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(13) : 531461 -531461 . DOI: 10.7527/S1000-6893.2024.31461
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