Sinc Envelope Sinc Filter Model
A pulsed carrier function model, which can be used for a radar's received signal matched filtering. The filter's characteristic response curve is represented by a train of sinc spectrums. The peak magnitude of the sinc spectrum is determined by an envelope sinc function.
| Parameter | Description |
|---|---|
| Upper Bandwidth Limit | The filter’s upper limit on the power spectrum. The bandwidth limit is relative to the carrier frequency (the carrier being at zero Hz), and is specified as a positive value. The upper limit is considered to be a sharp cutoff point and the spectrum is zero beyond the limit. |
| Lower Bandwidth Limit | The filter’s lower limit on the power spectrum. The bandwidth limit is relative to the carrier frequency and is specified as a negative value. The lower limit is considered to be a sharp cutoff point and the spectrum is zero beyond the limit. |
| Bandwidth | A read-only field equal to the difference between Upper Bandwidth Limit and Lower Bandwidth Limit. It is the total spectral bandwidth over which the filter has a defined response. The filter will only compute over frequencies that are in its defined response; outside its defined response, complete attenuation occurs. |
| Insertion Loss | A fixed signal attenuation with the spectrum loss computed by the filter’s response characteristics. |
| Order | Specifies the order of the filter. In general, higher order filters have sharper roll-offs at the cutoff frequencies. | Cut-off Frequency | Specifies the -3dB (50 percent) filter attenuation response point. |
| Ripple | The amount of ripple present in the filter pass and stop bands. |