Question

Explain the working principle of GNSS. Draw well-labelled diagrams wherever required.

19 Jan 2026
Answer :
Word Count : 446
The Global Navigation Satellite System (GNSS) is a satellite-based navigation system that provides precise positioning, navigation, and timing services to users worldwide. The system relies on a constellation of satellites orbiting the Earth, ground control stations, and user receivers to determine accurate location coordinates. The working principle of GNSS is based on the concept of trilateration, which involves measuring the distance between a receiver and multiple satellites to calculate the receiver’s position on the Earth’s surface. Each satellite continuously transmits signals that include its exact position and the precise time the signal was sent. The user receiver captures these signals and calculates the time delay between transmission and reception. By multiplying _____ __________ ______ _________ _____ ______.
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