| 摘要 |
PURPOSE:To automatically estimate and correct an error contained in an observation value of a position measuring instrument, an oscillation detector, and an azimuth detector, by constituting a composite tracking system of a program tracking system and a conical scan system. CONSTITUTION:An error correcting part 13 receives each observation value of a roll angle, a pitch angle and a nose azimuth of a moving body and the present position, and an error estimated value from an error estimating part 12, and forms each estimated value of the roll angle, the pitch angle, the nose azimuth and the present position. A program tracking control part 9 executes a predicting calculation of a radio wave incoming direction, and this output is added to an output of a conical scan signal generating part 10 by an adding part 17. An oscillation correcting part 8 outputs a controlled variable to an antenna driving mechanism. An error estimating part 12 derives an error estimated value to each observation value of the roll angle, the nose azimuth and the present position of the moving body, based on a directional error observation value from a directional error detecting part 11. A correction of the error and a program tracking control are executed by an observation value whose error has been corrected.
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