Compressive sensing method with enhanced sparsity for aeroengine duct mode detection

This Letter proposes an improved compressive-sensing-based methodology for aeroengine fan noise detection to guarantee the performance under low signal-to-noise ratio conditions. The principle behind the proposed method is to modify the mode power spectrum in a way with increased sparsity, which is demonstrated in both numerical studies and experimental validations. Overall, the proposed method could be applicable to aeroengine testing applications.