Fast ray trace to identify radar multipaths
AssigneeRaytheon Company
InventorMark L. Valentine
Life of this patent
Estimating the term…
Abstract
A method of detecting a target in a room using a radar system having a transmitter for irradiating the object, a sensor for receiving reflected radiation, and circuitry for analyzing the reflected radiation to determine at least one characteristic thereof, the method including determining at least one parameter for each wall of a plurality of walls of a room containing the target; determining possible signal paths between the target and the sensor for paths including up to N reflections based on the at least one parameter of each wall and the location of the sensor; calculating target image locations based on the possible signal paths; and processing the received radiation to determine a target location based on target image locations.
Claims15
A method of detecting a target in a room using a radar system having a transmitter for irradiating the object, a sensor for receiving reflected radiation, and circuitry for analyzing the reflected radiation to determine at least one characteristic thereof, the method comprising:
- determining at least one parameter for each wall of a plurality of walls of a room containing the target;
- determining possible signal paths between the target and the sensor for paths comprising up to N reflections based on the at least one parameter of the walls and the location of the sensor, comprising:
- determining a first set of possible signal paths from the target to the sensor;
- determining a second set of time-reversed possible signal paths from the sensor to the target;
- and
- determining the possible two-way signal paths based on a union of the first set and the second set;
- and
- calculating sensor image locations based on the possible signal paths;
- and
- processing the received radiation to determine a target location based on the sensor image locations.
A method of detecting a target in a room using a radar system having a transmitter for irradiating the object, a sensor for receiving reflected radiation, and circuitry for analyzing the reflected radiation to determine at least one characteristic thereof, the method comprising:
- determining at least one parameter for each wall of a plurality of walls of a room containing the target;
- determining possible signal paths between the target and the sensor for paths comprising up to N reflections based on the at least one parameter of all of the walls and the location of the sensor;
- determining a first set of possible signal paths from the target to the sensor;
- determining a second set of time-reversed possible signal paths from the sensor to the target;
- and
- determining the possible two-way signal paths based on an intersection of the first set and the second set;
- and
- calculating sensor image locations based on the possible signal paths;
- and
- processing the received radiation to determine a target location based on the sensor image locations.
Dependencies are inferred from the claim text.