Personal inertial surveying system
First Claim
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1. A personal inertial surveying system comprising:
- an inertial sensor adapted to be coupled to a person, the inertial sensor detecting motion of the inertial sensor as the person walks through a region and generating a first signal indicative of the motion of the inertial sensor;
processing means adapted to be coupled to the person for receiving the first signal indicative of the motion of the inertial sensor and generating therefrom a second signal indicative of a position of the inertial sensor;
a memory for storing position information related to the position of the inertial sensor;
means for correcting the position information stored in the memory to correct for inaccuracies in the position information; and
means for activating the means for correcting the position information, said means for activating being coupled to signals generated by the person as the person walks through the region.
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Abstract
A personal inertial surveying system includes an inertial sensor and processing equipment adapted to be mounted to or carried by a person walking through a region being surveyed. As the person walks inaccuracies in position measurement due to drifts in the inertial sensor can be conveniently corrected. Corrections can be performed often during brief pauses as the person paces though the region, resulting in improved accuracy in the survey.
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Citations
38 Claims
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1. A personal inertial surveying system comprising:
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an inertial sensor adapted to be coupled to a person, the inertial sensor detecting motion of the inertial sensor as the person walks through a region and generating a first signal indicative of the motion of the inertial sensor; processing means adapted to be coupled to the person for receiving the first signal indicative of the motion of the inertial sensor and generating therefrom a second signal indicative of a position of the inertial sensor; a memory for storing position information related to the position of the inertial sensor; means for correcting the position information stored in the memory to correct for inaccuracies in the position information; and means for activating the means for correcting the position information, said means for activating being coupled to signals generated by the person as the person walks through the region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of surveying a region comprising:
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coupling an inertial sensor to a person; with the inertial sensor, detecting motion of the inertial sensor as the person walks through the region; with the inertial sensor, generating a first signal indicative of the motion of the inertial sensor; using the first signal indicative of the motion of the inertial sensor, generating a second signal indicative of position of the inertial sensor; storing position information related to the position of the inertial sensor; and correcting the position information to correct for inaccuracies in the position information, said correcting being controlled by signals generated by the person as the person walks through the region. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification