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 parity space technique, determine at least one protection level value based on the error covariance matrix.
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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 parity space technique, determine at least one protection level value based on the error covariance matrix.
74 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 parity space 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, 10, 11)
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12. 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, using a bank of least-square-solution processes, a bank of error covariance matrices and navigation solutions associated with horizontal and vertical velocity states of the vehicle, and based on the matrices and navigation solutions, determine, using a parity space technique, at least one protection level value associated with said velocity states. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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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 parity space technique, determining at least one protection level value based on the error covariance matrix. - View Dependent Claims (20)
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Specification