Free induction decay resolution enhancement

Matched filter The multiplication of the free induction decay with a sensitivity enhancement function that matches exactly the decay of the raw signal. This results in enhancement of resolution, but broadens the Lorentzian line by a factor of 2 and a Gaussian line by a factor of 2.5. 

Figure 2-9 The effect of multiplying a free-induction decay by a resolution enhancement (left) and the normal spectrum (right).

Figure 6a. A 500-MHz full spectrum of guajol with partial assignments. Resolution in this spectrum was further enhanced by a Lorentz- auss transformation of the free induction decay (1).

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