Spacecraft position estimating system and method

Details Spacecraft position estimating system and method Spacecraft position estimating system and method

G - Physics

01

S

G01S 5/00 (2006.01) G01S 5/02 (2010.01) G01S 5/06 (2006.01)

Patent

CA 2731372

A system for estimating a spacecraft (6) position is disclosed. It includes receiving stations (4) for receiving signals transmitted from the spacecraft (6) and a processing station (2) for re-ceiving data from the receiving stations (4) Each receiving station (4) records, during a recording window (8), the signals transmitted from the spacecraft (6) and transmits, to the processing station (2), data representing the recorded signals during the recording window (8) The recording windows (8) associated with each of the receiving stations (4) are offset and/or of different size with respect to each oth-er The processing station (2) correlates the recorded signals to esti-mate the distance difference between the spacecraft (6) and each of a plurality of receiving stations and to estimate the spacecraft (6) posi-tion A method, a receiving station (4), a processing station (2) and a computer program are also disclosed

Linvention concerne un système destimation de la position dun vaisseau spatial (6). Le système comprend des stations de réception (4) pour recevoir des signaux émis par le vaisseau spatial (6), et une station de traitement (2) pour recevoir des données des stations de réception (4). Chaque station de réception (4) enregistre, pendant une fenêtre denregistrement (8), les signaux émis par le vaisseau spatial (6), et transmet à la station de traitement (2) des données représentant les signaux enregistrés pendant la fenêtre denregistrement (8). Les fenêtres denregistrement (8) associées à chacune des stations de réception (4) sont décalées et/ou de taille différente les unes par rapport aux autres. La station de traitement (2) effectue une corrélation des signaux enregistrés afin destimer la différence de distance entre le vaisseau spatial (6) et chacune dune pluralité de stations de réception, et destimer la position du vaisseau spatial (6). Linvention concerne également un procédé, une station de réception (4), une station de traitement (2) et un programme informatique.

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