| 摘要 |
<p>A navigation system (12) for a vehicle having a receiver (14) operable to receive a plurality of signals from a plurality of transmitters includes a processor (16) and a memory device (18). The memory device (18) has stored thereon machine-readable instructions that, when executed by the processor, enable the processor (16) to determine a set of pseudo-range measurements derived from the plurality of signals, employing at least one Kalman filter process, determine from the measurements an error covariance matrix for a main navigation solution, and using a solution separation technique, determine at least one protection level value based on sed on the error covariance matrix.</p> |
