Apparatus and method for measurement of the reception time...

G - Physics – 01 – S

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G01S 7/486 (2006.01) G01S 7/497 (2006.01)

Patent

CA 2720817

Apparatus (101, 201) for measurement of the reception time (t) of a pulse (102) in a receiving system (6-8, 103, 203, 203', 203"), which contains at least 1 receiving channel (6-8, 104, 104n) with a non-linear transmission response, which receiving channel (6-8, 104, 104n) produces at its output (10, 107, 207n) a received signal (108, 108n), having a memory (28, 128), in which the received signals of reference pulses (148i) with a predetermined different amplitude (Ai) are available as reference signals (149i, 149i,n) with respect to a time scale (T), and having an evaluation device (21, 121), which is connected to the receiving system and to the memory and compares a received signal (108, 108n) with each reference signal (149i, 149i,n) with a variant time offset (t) in order to determine that reference signal (148i) and that time offset (t) for which the comparison discrepancy (vi,t, v'i,t) is a minimum, and outputs this time offset as the reception time (t) with respect to the time scale (T).

L'invention porte sur un dispositif (101, 201) de mesure de l'instant de réception (t) d'une impulsion (102) dans un système de réception (6-8, 103, 203, 203', 203'') qui comporte au moins un canal de réception (6-8, 1024, 104n) qui possède un comportement de transmission non linéaire et qui fournit à sa sortie (10, 107, 207n) un signal de réception (108, 108n), avec une mémoire (28, 128) dans laquelle sont stockés comme signaux de référence (149i, 149i,n) par rapport à une échelle des temps (T) les signaux de réception d'impulsions de référence (148i) de différentes amplitudes prédéterminées (Ai) et avec une unité d'analyse (21, 121) qui est raccordée au système de réception et à la mémoire, qui compare un signal reçu (108, 108n) avec chaque signal de référence (149i, 149i,n) pour un décalage temporel variable (t) afin de déterminer le signal de référence (148i) et le décalage temporel (t) pour lesquels l'écart de comparaison (vi,t, v'i,t) est minimal et qui fournit en sortie ce décalage temporel comme instant de réception (t) sur l'échelle des temps (T).

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