METHOD AND DEVICE FOR LOCATING A COMMUNICATION SOURCE AND MOBILE COMMUNICATION SYSTEM USING ONE SUCH DEVICE
First Claim
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1. Method for locating an optical radiation source of the kind in which receivers like infrared receivers are used in an on/off mode, characterized in that it consists in:
- arranging at least one receiver of optical radiation at a point for which localization is sought, the receivers being arranged in order to discriminate separate zones or sectors in a space in which at least one determined transmitter of an optical radiation source is present;
driving the transmitting emission from said transmitter in order to provide a recurrence of pulses having determined emission powers;
locating the point associated with the receiver by detecting the state of the receiver or the receivers in response to the said recurrence of pulses having determined emission powers.
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Abstract
Method for locating an optical radiation source of the kind in which receivers like infrared receivers are used in an on/off mode, characterized in that it consists in:
- arranging at least one receiver of optical radiation at a point for which localization is sought, the receivers being arranged in order to discriminate separate zones or sectors in a space in which at least one determined transmitter of an optical radiation source is present;
- driving the transmitting emission from the transmitter in order to provide a recurrence of pulses having determined emission powers;
- locating the point associated with the receiver by detecting the state of the receiver or the receivers in response to the recurrence of pulses having determined emission powers.
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Citations
20 Claims
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1. Method for locating an optical radiation source of the kind in which receivers like infrared receivers are used in an on/off mode, characterized in that it consists in:
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arranging at least one receiver of optical radiation at a point for which localization is sought, the receivers being arranged in order to discriminate separate zones or sectors in a space in which at least one determined transmitter of an optical radiation source is present; driving the transmitting emission from said transmitter in order to provide a recurrence of pulses having determined emission powers; locating the point associated with the receiver by detecting the state of the receiver or the receivers in response to the said recurrence of pulses having determined emission powers. - View Dependent Claims (2, 3, 4, 17, 18)
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- 5. Device for locating a communication source, said device being of the type having a plurality (1-4) of detectors of infrared waves in an on/off mode, each detector being inserted in a support absorbing the infrared waves and leaving the infrared rays coming from possible communication sources in a determined geometric sector or zone, characterized in that it comprises a means, at the input of which are provided the shaped signals from the other detectors, for determining a channel of receiver, or of the receivers, located in view of at least a communication source generating a recurrence of pulses, having given powers.
- 12. Device according to clam 11, characterized in that the said given decay law is of the exponential type, each pulse (pi) and/or frame (ti) having a determined amplitude (ai) during a determined duration (DT), and is separated from the next frame (ti+1) with a given duration (DR).
Specification