| 摘要 |
The invention concerns the field of passive trajectory tracking methods based on angular measurements of a target. It consists in a passive trajectory tracking method based on angular measurements of a target (C) performed by an optronic sensor of a platform (P), the platform performing a maneuver so that the trajectory of the platform comprises at least two rectilinear portions (1 and 3, or 3 and 5) of mutually different directions (D, D') and at least a turn (2, 4), the angular measurements containing several errors among which, a measurement noise, a fixed bias, a possible bias of the load factor, a bias depending on the orientation of the line of aim of the sensor relative to the platform. The trajectory tracking method comprises an error correcting step, the error correcting step blanking the angular measurements during the turn or turns, maintaining the angular measurements during at least two rectilinear portions of mutually different directions and compensating the differences between the different biases (bm1, bm2) depending on the orientation of the line of aim of the sensor corresponding respectively to said different directions of rectilinear portion. The invention is in particular applicable to a firing direction control system.
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