Positioning apparatus, control method of positioning apparatus, control program for positioning apparatus, and computer readable recording medium for storing control program for positioning apparatus
First Claim
1. A positioning apparatus for positioning based on satellite signals from positioning satellites, comprising:
- correlation information generating means for generating correlation information which indicates correlation values between the satellite signals and correlation purpose signals stored in the positioning apparatus;
correlation information evaluating means for determining whether or not variation in the correlation values falls within a predetermined normal variation range;
multipath determining means for determining whether or not the satellite signals are affected by a multipath based on determination results of the correlation information evaluating means;
multipath correcting information generating means for generating multipath correcting information to correct effects of the multipath based on determination results of the multipath determining means and the correlation information; and
correlation value correcting means for correcting the correlation values based on the multipath correcting information.
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Accused Products
Abstract
A positioning apparatus for positioning based on satellite signals from positioning satellites includes: correlation information generating means for generating correlation information which indicates correlation values between the satellite signals and correlation purpose signals stored in the positioning apparatus; correlation information evaluating means for determining whether or not variation in the correlation values falls within a predetermined normal variation range; multipath determining means for determining whether or not the satellite signals are affected by a multipath based on determination results of the correlation information evaluating means; multipath correcting information generating means for generating multipath correcting information to correct effects of the multipath based on determination results of the multipath determining means and the correlation information; and correlation value correcting means for correcting the correlation values based on the multipath correcting information.
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Citations
6 Claims
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1. A positioning apparatus for positioning based on satellite signals from positioning satellites, comprising:
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correlation information generating means for generating correlation information which indicates correlation values between the satellite signals and correlation purpose signals stored in the positioning apparatus;
correlation information evaluating means for determining whether or not variation in the correlation values falls within a predetermined normal variation range;
multipath determining means for determining whether or not the satellite signals are affected by a multipath based on determination results of the correlation information evaluating means;
multipath correcting information generating means for generating multipath correcting information to correct effects of the multipath based on determination results of the multipath determining means and the correlation information; and
correlation value correcting means for correcting the correlation values based on the multipath correcting information. - View Dependent Claims (2, 3)
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4. A control method of a positioning apparatus, comprising the steps of:
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generating correlation information which indicates correlation values between satellite signals and correlation purpose signals stored in a positioning apparatus by means of the positioning apparatus for positioning based on the satellite signals from positioning satellites;
evaluating correlation information for determining whether or not variation in the correlation values falls within a predetermined normal variation range by means of the positioning apparatus;
determining multipath for determining whether or not the satellite signals are affected by a multipath by means of the positioning apparatus based on determination results of the step of evaluating correlation information;
generating multipath correcting information to correct effects of the multipath by means of the positioning apparatus based on determination results of the multipath determining means and the correlation information; and
correcting correlation values for correcting the correlation values by means of the positioning apparatus based on the multipath correcting information.
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5. A control program for a positioning apparatus, instructing a computer to perform the steps of:
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generating correlation information which indicates correlation values between satellite signals and correlation purpose signals stored in a positioning apparatus by means of the positioning apparatus for positioning based on the satellite signals from positioning satellites;
evaluating correlation information for determining whether or not variation in the correlation values falls within a predetermined normal variation range by means of the positioning apparatus;
determining multipath for determining whether or not the satellite signals are affected by a multipath by means of the positioning apparatus based on determination results of the step of evaluating correlation information;
generating multipath correcting information to correct effects of the multipath by means of the positioning apparatus based on determination results of the multipath determining means and the correlation information; and
correcting correlation values for correcting the correlation values by means of the positioning apparatus based on the multipath correcting information.
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6. A computer readable recording medium for storing a control program for a positioning apparatus, instructing a computer to perform the steps of:
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generating correlation information which indicates correlation values between satellite signals and correlation purpose signals stored in a positioning apparatus by means of the positioning apparatus for positioning based on the satellite signals from positioning satellites;
evaluating correlation information for determining whether or not variation in the correlation values falls within a predetermined normal variation range by means of the positioning apparatus;
determining multipath for determining whether or not the satellite signals are affected by a multipath by means of the positioning apparatus based on determination results of the step of evaluating correlation information;
generating multipath correcting information to correct effects of the multipath by means of the positioning apparatus based on determination results of the multipath determining means and the correlation information; and
correcting correlation values for correcting the correlation values by means of the positioning apparatus based on the multipath correcting information.
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Specification