Evaluating target tracking when using multiple sensors

Details Evaluating target tracking when using multiple sensors Evaluating target tracking when using multiple sensors

1991-09-12

1997-02-18

Ramirez, Ellis B.

Boots, shoes, and leggings

342378, 342450, 342465, G01S 1104

Patent

active

056046839

ABSTRACT:
Measuring the difference in dihedral angles formed by planes defined by a pair of passive sensors, a target, and a reference plane to determine whether both sensors are tracking the same target. The reference plane is defined by the positions of the two sensors and the origin of the system's reference coordinates. A sensor-target plane is determined by the sensor's position, the position of the other sensor, and the position of its target. If the target is the same for both sensors, the sensor-target planes will be substantially the same and their dihedral angles formed with the reference plane will be substantially equal. If the target is not the same for both sensors, then a statistic relating to the dihedral angles with the reference plane will be significant. A decision based on the dihedral angle statistic and a statistic derived from the tracking predictor, e.g., the Kalman Filter Residual, can be made whether the target is maneuvering, has been lost, is correctly tracked.

REFERENCES:
patent: 4633261 (1986-12-01), Kosaka et al.
patent: 4914604 (1990-04-01), Castelaz
patent: 5107271 (1992-04-01), White
patent: 5128684 (1992-07-01), Brown

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