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bistromath / gr-air-modes

Gnuradio Mode-S/ADS-B radio
This project implements a Mode S receiver for the Gnuradio software-defined radio project. It is designed to receive Mode S transmissions from aircraft and decode them to a human-readable format, including ADS-B information messages such as position and a
GNU General Public License v3.0
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Added option for pulse matched filtering #24

Closed jmcorgan closed 12 years ago

jmcorgan commented 12 years ago

Pulse matched filtering places a boxcar filter upstream of the averager and preamble detector. The filter length is equivalent to the number of samples in one Mode S chip (0.5us). This technique enhances operation when using sample rates > 4Msps.