Re:Espargos: ESP32-based WiFi sensing array
by bobmcnamara on Sunday March 02, 2025 @02:49PM
(#43234288)
(unrelated to ESP32)
You can often get some sample timing resolution from a sampled signal by interpolating the result of a complex correlation. You start by searching the correlation output for the loudest hypotenuse lag, then take he worked tangent of the quadrature information of that lag to estimate the sub-sample event time
You can often get some sample timing resolution from a sampled signal by interpolating the result of a complex correlation. You start by searching the correlation output for the loudest hypotenuse lag, then take he worked tangent of the quadrature information of that lag to estimate the sub-sample event time