초록 ▼

A system for determining the heading and/or attitude of a body receives radio waves from a plurality of position-fixing satellites using at least three antennas fixedly mounted at different positions of the body. To reliably obtain integer ambiguity solutions of carrier phases of the radio waves in

A system for determining the heading and/or attitude of a body receives radio waves from a plurality of position-fixing satellites using at least three antennas fixedly mounted at different positions of the body. To reliably obtain integer ambiguity solutions of carrier phases of the radio waves in a shorter time, the system directly determines integer ambiguities from attitude angle data obtained by an IMU attitude processing section when the integer ambiguities are to be redetermined in the event of an interruption of the received radio waves or a change in the combination of satellites to be used. This system provides a user with highly accurate uninterrupted heading and/or attitude angle information.

대표청구항 ▼

1. A system for determining the heading and/or attitude of a body, said system comprising:at least three antennas which receive radio waves from a plurality of position-fixing satellites with one of the antennas being used as a reference antenna, the antennas being fixed at different positions of th

1. A system for determining the heading and/or attitude of a body, said system comprising:at least three antennas which receive radio waves from a plurality of position-fixing satellites with one of the antennas being used as a reference antenna, the antennas being fixed at different positions of the body; means for determining the relative positions of the other antennas with respect to the reference antenna by observing single differences of carrier phase or double differences of carrier phase between carrier phases of the radio waves and by calculating integer ambiguities of the phase differences to thereby determine the heading and/or attitude of the body; an IMU sensor installed on the body; means for obtaining attitude angles of the body based on an output of the IMU sensor; and means for determining the integer ambiguities based on the attitude angles obtained when the integer ambiguities are to be redetermined.