ADC and Matched Filtering

1. What is meant by matched filter?
2. What is the difference between matched filter and non matched filter?
3. Is a matched filter autocorrelation?
4. What is matched filtering in image processing?

What is meant by matched filter?

The matched filter is the optimal linear filter for maximizing the signal-to-noise ratio (SNR) in the presence of additive stochastic noise. Matched filters are commonly used in radar, in which a known signal is sent out, and the reflected signal is examined for common elements of the out-going signal.

What is the difference between matched filter and non matched filter?

The noncoherent matched filter has impulse response derived from the transmitted pulse shape, and when the pulse shape is a passband signal the matched filter impulse response my have initial phase not equal to the initial phase of the pulse shape waveform.

Is a matched filter autocorrelation?

In a simple radar ranging system, if the data contains a single “target,” the output of the matched filter (not including noise) is the autocorrelation function of the transmitted waveform, time-shifted to where the target is located in time.

What is matched filtering in image processing?

A matched filter is a linear filter with a transfer function that maximizes the output signal-to-noise ratio (SNR) for an input signal with known properties.