🔍 Key Concepts

• GPS satellite geometry and how it affects accuracy • Meaning of Dilution of Precision (DOP) values (HDOP, VDOP, PDOP) • Difference between signal features (like coding or frequency) vs. position accuracy indicators

💭 Think About

• Which option refers specifically to how the arrangement of satellites in the sky affects your position accuracy? • Which terms in the choices are about how the signal is generated or transmitted, rather than about the quality of your position fix? • Think about what your GPS display actually shows when it gives you an idea of fix quality related to satellite layout.

✅ Before You Answer

• Identify which choice is commonly shown on GPS units as a numerical quality indicator of satellite geometry (often a small number is better). • Eliminate any options that are about intentional signal degradation or encryption, not geometry. • Verify which term is directly associated with DOP (Dilution of Precision) in horizontal positioning.