FS FS - Fundamentals of Surveying GPS and GNSS Technology 2

Question 1

What is RTK in GPS surveying?

Accepted Answer

Real-Time Kinematics

Answer

RTK (Real-Time Kinematics) is a differential GPS technique that delivers centimeter-level accuracy in real time by transmitting corrections from a base station to a rover.

Question 2

What is multipath error in GPS surveying?

Accepted Answer

Signal reflecting off surfaces before reaching the antenna

Answer

Multipath error occurs when GPS signals reflect off nearby surfaces such as buildings or water, causing the receiver to process erroneous signal paths.

Question 3

Which atmospheric layer causes the largest GPS signal delay?

Accepted Answer

Ionosphere

Answer

The ionosphere causes the largest GPS signal delay because free electrons slow the electromagnetic signal as it passes through.

Question 4

What does PDOP measure in GPS quality assessment?

Accepted Answer

Position Dilution of Precision

Answer

PDOP (Position Dilution of Precision) describes the combined effect of satellite geometry on 3D positional accuracy.

Question 5

GPS satellites orbit Earth at approximately what altitude?

Accepted Answer

20,200 km

Answer

GPS satellites orbit at approximately 20,200 km above Earth's surface in medium Earth orbit, providing global coverage.

FS - Fundamentals of Surveying Exam Practice Test

FS - Fundamentals of Surveying Exam Practice Test

FS FS - Fundamentals of Surveying GPS and GNSS Technology 2