RPLS Surveying Principles and Methods 3

Question 1

What is the primary advantage of GPS RTK (Real-Time Kinematic) surveying over post-processed static GPS?

Accepted Answer

Immediate centimeter-level positioning in the field without office processing

Answer

RTK provides centimeter-level accuracy in real time by resolving carrier-phase ambiguities instantly, eliminating the need for post-processing.

Question 2

When computing the area of a closed traverse using the coordinate method, which formula is applied?

Accepted Answer

The double meridian distance (DMD) method or shoelace formula with X,Y coordinates

Answer

The coordinate (shoelace) method computes area directly from the X,Y coordinates of traverse vertices, equivalent to the DMD method.

Question 3

A bearing of S 47°30' E is equivalent to what azimuth (measured clockwise from North)?

Accepted Answer

132°30'

Answer

S 47°30' E = 180° − 47°30' = 132°30' azimuth from North.

Question 4

What does a 'three-wire leveling' technique improve compared to single-wire leveling?

Accepted Answer

Distance estimation and rod-reading redundancy for error detection

Answer

Three-wire leveling reads all three crosshairs on the rod, allowing stadia distance estimation and providing redundant readings that average out errors.

Question 5

In photogrammetric surveying, what is the purpose of ground control points (GCPs)?

Accepted Answer

To georeference the photogrammetric model to a real-world coordinate system

Answer

GCPs tie the photogrammetric model to a known datum, enabling accurate absolute positioning of all derived measurements.

(RPLS) Registered Professional Land Surveyor Practice Test

(RPLS) Registered Professional Land Surveyor Practice Test

RPLS Surveying Principles and Methods 3