Abstract: The invention relates to a method for locating a signal transmitter whose position is unknown, by the use of signal receivers which are synchronized with each other to a common time reference and whose positions are known, comprising: a step of multilateration by time difference of arrival, which is done with the signals sent by the transmitter with unknown position and respectively received by the receivers, characterized in that: said step of multilateration by time difference of arrival is preceded by a step of evaluation of the time offsets between the values from the common time reference respectively known by the receivers, and said step of multilateration by time difference of arrival is done by correcting said temporal offsets so as to reset the receivers to said same common time reference value.
Abstract: The invention relates to a method for locating a signal transmitter whose position is unknown, by the use of signal receivers which are synchronized with each other to a common time reference and whose positions are known, comprising: a step of multilateration by time difference of arrival, which is done with the signals sent by the transmitter with unknown position and respectively received by the receivers, characterized in that: said step of multilateration by time difference of arrival is preceded by a step of evaluation of the time offsets between the values from the common time reference respectively known by the receivers, and said step of multilateration by time difference of arrival is done by correcting said temporal offsets so as to reset the receivers to said same common time reference value.
Abstract: A device for detecting objects such as mines placed in a zone to be explored, the device being placed on a vehicle moving at a velocity V and including a panel on which a radiation set is arranged to transmit signals at an illumination frequency and to receive signals reflected from the zone, and a processing circuit to provide information about the presence of the objects after processing of the reflected signals, wherein the radiation set includes an alignment of antennas arranged transverse to the velocity V of displacement of the vehicle.
Type:
Application
Filed:
July 5, 2012
Publication date:
May 1, 2014
Applicants:
ECOLE POLYTECHNIQUE, AMESYS SAS
Inventors:
Claude Chekroun, Mario Duran, Olivier Bohbot, Roland Seneor