The question asks to identify the correct statement regarding Global Navigation Satellite System (GNSS) positioning methods.

Analyzing GNSS Positioning Statements

Option A: Differential GNSS (DGNSS)

This statement suggests corrections are transmitted from the reference station to the user in DGNSS. While DGNSS does utilize corrections from a reference station to improve user positioning accuracy by mitigating errors, the statement might be incomplete. The core principle is error correction, not just coordinate transmission.

Option B: Kinematic Methods Classification

This statement correctly identifies both Real-time kinematic (RTK) and stop-and-go positioning as kinematic methods.

• RTK Positioning: Determines positions in real-time while the receiver is in motion, providing continuous position updates.
• Stop-and-Go Positioning: Involves moving the receiver between points, stopping briefly at each point to collect data (carrier phase measurements) before moving to the next.

Both techniques are characterized by the movement of the GNSS receiver and are therefore classified as kinematic methods.

Option C: Rapid-Static Positioning Type

This statement claims rapid-static positioning is not a relative positioning technique. This is incorrect. Rapid-static positioning is a type of relative positioning technique. It requires at least two receivers (base and rover) and precisely determines the vector (baseline) connecting them using carrier phase measurements over a short duration.

Option D: Double Differencing Benefits

This statement describes the benefits of double differencing. Double differencing is a processing technique that eliminates receiver and satellite clock offsets. It also helps mitigate atmospheric delays and improve the signal-to-noise ratio of the observations. While the statement highlights key advantages, the primary classification of positioning methods is more fundamental.

Conclusion

Comparing the options, Option B provides a fundamentally correct classification of RTK and stop-and-go positioning methods as kinematic techniques. The other options are either incorrect (Option C) or describe aspects that, while true, might not be the most accurate or fundamental statement compared to Option B (Options A and D).