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Which of the following is not a reason for not using the basic GPS for landing systems?

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Which of the following is not a reason for not using the basic GPS for landing systems?

(a) Accuracy

(b) Integrity

(c) Availability of satellites

(d) Number of users

This question was posed to me during an interview.

My doubt stems from Satellite Landing System in chapter Landing Systems & Air-Traffic Management of Avionics

1 Answer

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Best answer
The correct option is (d) Number of users

Explanation: The primary reason for not using basic GPS for landing systems is because does not provide the accuracy that is required for landing, it lacks a monitoring system and the availability of a sufficient number of satellites to provide location information.

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