METHOD AND APPARATUS FOR RECEIVING POSITIONING SIGNALS BASED ON PSEUDORANGE CORRECTIONS
First Claim
Patent Images
1. A method for use in a receiver configured to receive positioning signals, the method comprising:
- obtaining an initial pseudorange to each one of a plurality of sources from which the positioning signals are received;
obtaining an initial value of a positioning parameter based on the initial pseudoranges;
obtaining a difference between the initial value of the positioning parameter and a reference value of the positioning parameter;
obtaining a parameter error for each one of the sources, by adjusting the initial pseudorange for the source by an adjustment value, obtaining an adjusted value of the positioning parameter based on the adjusted pseudorange for the source and the initial pseudoranges for a remainder of the plurality of sources, and obtaining an error between the adjusted value of the positioning parameter and the initial value of the positioning parameter; and
obtaining, for each source, a pseudorange correction based on the difference between the initial value of the positioning parameter and the reference value of the positioning parameter, the parameter error for the source and the adjustment value.
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Abstract
A receiver for receiving positioning signals from a plurality of sources obtains a pseudorange correction for each source by obtaining an initial pseudorange to each source, an initial value of a positioning parameter based on the initial pseudoranges, a difference between the initial value of the positioning parameter and a reference value of the positioning parameter, a parameter error for each one of the sources, and the pseudorange correction for each source based on the difference between the initial and the reference values of the positioning parameter, the parameter error for the source and the value.
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Citations
16 Claims
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1. A method for use in a receiver configured to receive positioning signals, the method comprising:
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obtaining an initial pseudorange to each one of a plurality of sources from which the positioning signals are received; obtaining an initial value of a positioning parameter based on the initial pseudoranges; obtaining a difference between the initial value of the positioning parameter and a reference value of the positioning parameter; obtaining a parameter error for each one of the sources, by adjusting the initial pseudorange for the source by an adjustment value, obtaining an adjusted value of the positioning parameter based on the adjusted pseudorange for the source and the initial pseudoranges for a remainder of the plurality of sources, and obtaining an error between the adjusted value of the positioning parameter and the initial value of the positioning parameter; and obtaining, for each source, a pseudorange correction based on the difference between the initial value of the positioning parameter and the reference value of the positioning parameter, the parameter error for the source and the adjustment value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A non-transitory computer-readable storage medium storing a computer program which, when executed on a processor, causes the processor to perform a method for use in a receiver configured to receive positioning signals, the method comprising:
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obtaining an initial pseudorange to each one of a plurality of sources from which the positioning signals are received; obtaining an initial value of a positioning parameter based on the initial pseudoranges; obtaining a difference between the initial value of the positioning parameter and a reference value of the positioning parameter; obtaining a parameter error for each one of the sources, by adjusting the initial pseudorange for the source by an adjustment value, obtaining an adjusted value of the positioning parameter based on the adjusted pseudorange for the source and the initial pseudoranges for a remainder of the plurality of sources, and obtaining an error between the adjusted value of the positioning parameter and the initial value of the positioning parameter; and obtaining, for each source, a pseudorange correction based on the difference between the initial value of the positioning parameter and the reference value of the positioning parameter, the parameter error for the source and the adjustment value.
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13. A receiver comprising:
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a receiving module for receiving positioning signals from a plurality of sources; a pseudorange determining module for obtaining an initial pseudorange to each one of the plurality of sources; a positioning module for obtaining an initial value of a positioning parameter based on the initial pseudoranges; a parameter difference obtaining module for obtaining a difference between the initial value of the positioning parameter and a reference value of the positioning parameter; a parameter error determining module for obtaining a parameter error for each one of the sources, by adjusting the initial pseudorange for the source by an adjustment value, obtaining an adjusted value of the positioning parameter based on the adjusted pseudorange for the source and the initial pseudoranges for a remainder of the plurality of sources, and obtaining an error between the adjusted value of the positioning parameter and the initial value of the positioning parameter; and a pseudorange correction module for obtaining, for each source, a pseudorange correction based on the difference between the initial value of the positioning parameter and the reference value of the positioning parameter, the parameter error for the source and the adjustment value. - View Dependent Claims (14, 15, 16)
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Specification