Matched filter for doppler

1. What is a matched filter used for?
2. What is a Doppler filter?
3. What is matched filter detection?
4. What is matched filtering in gravitational waves?

What is a matched filter used for?

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 a Doppler filter?

The Doppler filters immediately produce an output signal during the current pulse period. These filters are thus also effective in the long-range with only one pulse period per antenna direction. They are then used to measure the Doppler frequency and thus directly to measure the radial velocity of the target.

What is matched filter detection?

2 Matched filter detection method. The matched filter (MF) technique is an optimum method to sense availability of spectrum since the MF can maximize the SNR even if there is additive white Gaussian noise (AWGN). This feature is accomplished via correlation process inherent of the method.

What is matched filtering in gravitational waves?

The aim of matched filtering is to see if the data contains any signals similar to a template bank member. Since our templates should describe the gravitational waveforms for the range of different merging systems that we expect to be able to see, any sufficiently loud signal should be found by this method.