https://www-cdn.eumetsat.int/files/2021-03/Virtual%20Network%20and%20Extended%20Time%20Window%20Techniques%20for%20Improving%20Detection%20Efficiency%20and%20False%20Alarm%20Rates%20for%20the%20Geostationary%20Lightning%20Mappers%20aboard%20GOES-16%20and%20GOES-17.pdf