Method and system for position and track determination
AssigneeLockheed Martin Corporation
InventorsVibeke Libby, Troy E. Wenski, Allen R. Lorenz
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Abstract
The present disclosure describes a method and system for detecting and determining the position of a target or intruder using a plurality of sensors positioned throughout a secured perimeter and a single antenna. The system of the present disclosure detects and determines the position of a target by first analyzing the return signal strength values of each of the sensors. Next, Zvalues for each of the sensors are calculated. Based on the Zvalues, certain sensors are selected to compute a signal strength center-of-mass location, which is then used to determine the position of the target.
Claims29
A method for determining a target location, the method comprising:
- transmitting a plurality of radio signals from a single antenna;
- receiving a plurality of return signal strength indicator (RSSI) values from a plurality of sensors;
- selecting one or more sensors from the plurality of sensors having certain RSSI values;
- computing a signal strength center-of-mass location of the selected one or more sensors;
- and
- determining a direction vector of the target based on the computed signal strength center-of-mass location.
A system for determining a target location, the system comprising:
- a plurality of electromagnetic sensors;
- an antenna configured to transmit a plurality of electromagnetic signals and to receive a plurality of return signals from a plurality of sensors;
- and
- a processor configured to:
- determine a return signal indicator (RSSI) value for each of the received plurality of return signals;
- select one or more sensors from the plurality of sensors having certain RSSI values;
- compute a signal strength center-of-mass location of the selected one or more sensors;
- and
- determine a direction vector of the target based on the computed signal strength center-of-mass location.
A computer executable program code on a non-transitory computer readable medium configured to cause a computer to:
- determine a return signal strength indicator (RSSI) value for each of a plurality of return signals received at an antenna from a plurality of sensors;
- select one or more sensors from the plurality of sensors having certain RSSI values;
- compute a signal strength center-of-mass location of the selected one or more sensors;
- and
- determine a location of the target based on the computed signal strength center-of-mass location.
Dependencies are inferred from the claim text.