Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2007-06-05
2007-06-05
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S150000
Reexamination Certificate
active
11204581
ABSTRACT:
A direction tracking method is proposed for quickly tracking directions-of-arrival of radio waves even in an environment where trajectories of the directions-of-arrival intersect. With the tracking method, the state vectors of directions-of-arrival (composed of a direction-of-arrival and the angular velocity and acceleration of the direction-of-arrival) at the current direction updating time are predicted with an observer by using state vectors of directions-of-arrival at the previous direction updating time to calculate provisional estimates of the directions-of-arrival, and furthermore, the state vectors at the current direction updating time are calculated based on the provisional estimates, the predicted state vectors, and predicted values of the directions-of-arrival to calculate estimates of the directions-of-arrival from the state vectors.
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Fujitsu Limited
Katten Muchin & Rosenman LLP
Nghiem Michael
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