What is a direct consequence of GPS continuous position updates for the INS?

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Prepare for the VT-IV Navigation Familiarization Exam II. Master navigation techniques with flashcards and multiple choice questions, with each answer fully explained. Boost your confidence and ace your exam!

Multiple Choice

What is a direct consequence of GPS continuous position updates for the INS?

Explanation:
GPS position updates provide an external reference that constrains INS drift. As the INS predicts position and velocity, small errors accumulate; GPS fixes reveal the true state, allowing the estimator to track error trends and correct the solution, so accuracy improves over time. This doesn't eliminate the need for initial alignment, and it doesn't reduce the number of satellites required for GPS.

GPS position updates provide an external reference that constrains INS drift. As the INS predicts position and velocity, small errors accumulate; GPS fixes reveal the true state, allowing the estimator to track error trends and correct the solution, so accuracy improves over time. This doesn't eliminate the need for initial alignment, and it doesn't reduce the number of satellites required for GPS.

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