What is Matched Filter and why it is used?
Shahram Shafie
Technical Engineering Management, Product Architect, and Systems Definer, Antenna, at ORTENGA
Matched filter is the transfer function of the impulse response of the receiver.
Matched filter is utilized in both radio communication or radar systems DSP to maximize the SNR.
In radio communication systems, the matched filter is shifted time inversed pilot (known signal by transmitter and receiver) signal.
In radar systems, the matched filter is shifted time inversed transmitted waveform.
By convolving the incoming signals with its original waveform, maximum SNR can be achieved for DSP, consequently enhancing data extractions from the incoming signals.
Once again, radio communications and radar systems show their relevance and similarity with albeit different linguistic.
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