Noise background normalization for simultaneous broadband and narrowband detection

The authors examine the optimization of a normalizer for broadband detection. They then present a normalizer which allows simultaneous detection of both source-related features, narrowband and broadband, from frequency-time intensity displays of power spectral data. The technique combines the output of a normalizer optimized for narrowband detection with that of a normalizer optimized for broadband by taking the maximum output at each frequency. Its properties are discussed and performance demonstrated using simulated data.<>