why do GPS satelites need such an accurate clock?
You have a bunch of satellites in space, sending signals that say, "My clocks says 5:00:00.123", "My clock says 5:00:00.124", over and over again. Your GPS measures the differences it takes for the signals to reach it. If it receives one second a thousandth of a second sooner, it knows that satel…
The Short Answer
You have a bunch of satellites in space, sending signals that say, "My clocks says 5:00:00.123", "My clock says 5:00:00.124", over and over again. Your GPS measures the differences it takes for the signals to reach it. If it receives one second a thousandth of a second sooner, it knows that satellite is about 300 km closer. With information from 3 or 4 satellites, and knowledge of where in their orbits they are suppose to be, it can calculate its position. Since light travels so fast, it needs a good clocks to make the calculations.
Analysis
Key Concepts: Satellites, signals, clocks
This explanation focuses on satellites, signals, clocks and spans 90 words across 5 sentences. The depth is typical for Technology questions (category average: 75 words), striking a balance between accessibility and completeness.
What This Answer Covers
The explanation opens with: “You have a bunch of satellites in space, sending signals that say, "My clocks says 5:00:00.123", "My clock says 5:00:00.” It then elaboratesultimately building toward a complete picture across 5 connected points.
How This Compares in Technology
Ranked #168 of 500 Technology questions by answer depth (top 34%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why gps satelites need such an accurate clock?
You have a bunch of satellites in space, sending signals that say, "My clocks says 5:00:00.123", "My clock says 5:00:00.124", over and over again. Your GPS measures the differences it takes for the signals to reach it. If it receives one second a…
How detailed is this explanation compared to similar Technology questions?
This is an above-average answer at 90 words, ranked #168 of 500 Technology questions by depth. The key concepts covered are satellites, signals, clocks.
What approach does this answer take to explain gps satelites need such an accurate clock?
The explanation uses direct explanation across 90 words. It is categorized under Technology and addresses the question through 1 analytical lens.