Multi-Dimensional Fusion Quality Evaluation Method of Radio Signal Based on Aviation Search and Rescue

When improving the reliability and accuracy of signals in aviation search and rescue system, the signal quality evaluation has a great significance of the service quality of the navigation search and rescue system. This paper integrates various evaluation indicators to evaluate radio signal's characteristics including the time-domain, frequency-domain, modulation-domain, correlation-domain, consistent-domain and signal accuracy. Further through the correlation between dimensions, the 2<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">nd</sup> level radio signal multi-dimensional fusion quality evaluation model (MFEM) was established, and the corresponding rapid evaluation method was proposed to realize the independent assessment of each domain and overall signal quality assessment. After several sets of data tested, it indicates that the MFEM can show fleetly the dynamic change of the signal quality, and the evaluation value performs higher reliability and accuracy. Moreover, it also provides a good reference for the establishment of the signal quality assessment system for others.