NAVIGATION SYSTEM WITH APPARATUS FOR DETECTING ACCURACY FAILURES
First Claim
1. A navigation system for a vehicle having a receiver operable to receive a plurality of signals from a plurality of transmitters, the navigation system comprising:
- a processor; and
a memory device having stored thereon machine-readable instructions that, when executed by the processor, enable the processor to;
determine a set of error estimates corresponding to delta pseudo-range measurements derived from the plurality of signals,determine an error covariance matrix for a main navigation solution, andusing a solution separation technique, determine at least one protection level value based on the error covariance matrix.
1 Assignment
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Accused Products
Abstract
A navigation system for a vehicle having a receiver operable to receive a plurality of signals from a plurality of transmitters includes a processor and a memory device. The memory device has stored thereon machine-readable instructions that, when executed by the processor, enable the processor to determine a set of error estimates corresponding to delta pseudo-range measurements derived from the plurality of signals, determine an error covariance matrix for a main navigation solution, and, using a solution separation technique, determine at least one protection level value based on the error covariance matrix.
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Citations
20 Claims
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1. A navigation system for a vehicle having a receiver operable to receive a plurality of signals from a plurality of transmitters, the navigation system comprising:
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a processor; and a memory device having stored thereon machine-readable instructions that, when executed by the processor, enable the processor to; determine a set of error estimates corresponding to delta pseudo-range measurements derived from the plurality of signals, determine an error covariance matrix for a main navigation solution, and using a solution separation technique, determine at least one protection level value based on the error covariance matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16, 17, 18)
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10. A navigation system for a vehicle having a receiver operable to receive a plurality of signals from a plurality of transmitters, the navigation system comprising:
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a processor; and a memory device having stored thereon machine-readable instructions that, when executed by the processor, enable the processor to; determine from the plurality of signals a set of values corresponding to horizontal and vertical velocity states of the vehicle, and based on said set of values, determine at least one protection level value associated with said velocity states. - View Dependent Claims (11, 12, 13, 14, 15)
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19. A computer-readable medium having computer-executable instructions for performing steps comprising:
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determining a set of error estimates corresponding to delta pseudo-range measurements derived from the plurality of signals; determining an error covariance matrix for a main navigation solution; using a solution separation technique, determining at least one protection level value based on the error covariance matrix. - View Dependent Claims (20)
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Specification