Question

4) DOP value provides an indication of the geometry of the
related to the location of observation at any instant of time.
O Project area.
O Satellite constellation.
O Observation period.
Receiver network.​

Answer 1

Answer:

Good precision GNSS satellite instantaneous code positioning demands good estimates of the distances from the transmitting satellites to the receiving antenna. But these good estimates do not always guarantee good positioning precision. This happens because the quality of the positioning is affected by the geometry of the observed satellites' constellation (the " satellites' geometry "), as seen from the GNSS receiver's antenna. The impact of the satellites' geometry in the positioning is accessed by the DOP factors. These factors have the power to greatly amplify the impact of the uncertainties of the pseudoranges into the uncertainty of the solution found for the positioning problem. The main objective of this paper is to show how DOP values can be computed when using SPP and, in doing so, to provide insights on the true significance of these quantities.