Device for determining the starting moment of the forefront of a high-frequency pulse

摘要

this device is intended for determining the time to the beginning of the leading edge of a received pulse (high frequency form: img id = "ia01 file =" imga0001.tif 47 "," wi ". =" 8 "img content =" math "img format =" tif "inline =" no "/" where v is the instantaneous pressure gradient, the (unknown a priori) from the front, t is time, f is the frequency.;it is remarkable in that it includes means for delaying the pulse delay from a period of time equal to k / f (k integer), and to provide a second pulse f of form: img id"ia02 file =" imga0002.tif "wi =" 59 "i =" 10 "img content =" math "img format =" tif "inline" no. "/ , and computing means for the moment in the calculation: img id =" ia03 file =. "imga0003.- "wi =" 45 "(=" 14 "img content =" math "img format =" tif "inline" no. "/ ;application of radio navigation.