G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 13/52 (2006.01)
Patent
CA 2748347
The invention relates to the field of the radar monitoring of airspace zones. It relates more particularly to the low-altitude aerial monitoring of zones that are more or less densely populated by fixed objects comprising moving parts, wind turbines for example. The method according to the invention comprises two processing modules applied to the raw signal Sb(t) received by the radar. The first module carries out the recognition in the signal Sb(t) of a signal reflected by a wind turbine, the recognition being performed by detecting an evolution over time of the amplitude of the signal received Sb(t) characteristic of this type of signal. The first module also formulates a parasitic signal model either directly from the signal Sb(t) or from external real-time information relating to the operating state of the wind turbine whose signal has been detected. The second module executes the actual filtering of the signal Sb(t), this filtering consisting in subtracting the parasitic signal model s(t) from the signal Sb(t). The filtered signal Sf(t) is transmitted to the processing operating downstream of the method according to the invention.
The invention concerns the field of the radar monitoring of airspace zones. It relates more particularly to the low altitude air surveillance of zones that are more or less densely populated with fixed objects comprising moving parts, wind turbines for example. The method according to the invention comprises two processing modules applied to the raw signal S b(t) received by the radar. The first module carries out the recognition in the signal S b(t) of a signal reflected by a wind turbine, the recognition being performed by detecting an evolution in the course of time of the amplitude of the signal received S b(t), characteristic of this type of signal. The first module also formulates a spurious-signal model either directly on the basis of the signal S b(t) or on the basis of external real-time information relating to the operating state of the wind turbine whose signal has been detected. The second module executes the filtering proper of the signal S b(t), this filtering consisting in subtracting the spurious- signal model s(t) from the signal S b(t). The filtered signal S f(t) is transmitted to the processing operating downstream of the method according to the invention.
Beauquet Gilles
Campoy Frederic
Moruzzis Michel
Marks & Clerk
Thales
LandOfFree
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