Questions tagged [dgps]

Differential Global Positioning System (DGPS) is an enhancement to Global Positioning System which provides improved location accuracy, from the 15-meter nominal GPS accuracy to about 10 cm in case of the best implementations.

Filter by
Sorted by
Tagged with
2
votes
1answer
30 views

Options for precise relative position calculations

I'm investigating an industrial application that has a requirement to calculate with precision the relative distance on the ground between two outdoor points in the following scenario: The first ...
0
votes
0answers
10 views

Do DGPS(or RTK) improve the accuracy of speed derived from Doppler shift?

I just started to study how to use GNSS modules. I know that RTCM messages include several correction parameters that lessen the positional error. I wonder if DGPS correction works for the speed ...
1
vote
0answers
22 views

Distance calibration between GNSS RTK receiver and display/processing device?

Are there any known procedures for calibrating a precise position of an external processing/display device (e.g. a smartphone or a tablet) relative to the GNSS receiver? Apparently, such a procedure ...
0
votes
0answers
10 views

Ensuring a public Ntrip caster tracks the same satellites as you

dGPS requires two receivers to track the same satellites simultaneously. When one of the receivers is a Ntrip caster, what is the canonical approach to ensure your receiver tracks the same satellites/...
1
vote
0answers
192 views

Formula to calculate DGPS correction factors

I am trying to implement a differential GPS algorithm. During my research, I found a paper at https://opus.bibliothek.uni-wuerzburg.de/opus4-wuerzburg/frontdoor/deliver/index/docId/11361/file/...
0
votes
2answers
83 views

DGPS for Single Epoch?

Usually for post processing DGPS in any technique (RTK - Carrier phase, Pseudorange code) the RINEX files used contains data for many consecutive epochs. This leads to very large RINEX files. Is it ...
0
votes
2answers
141 views

DGPS Pseudorange code vs Carrier phase: What fields from the RINEX actually used?

The basic RINEX epoch measurement looks like: Pseudorange, Carrier phase, Doppler, SNR (In that order?) Is this correct for post processing: Using Pseudorange code technique (RTKLIB positioning ...
7
votes
2answers
6k views

GNSS raw measurements on Android: Does real time/post processing Differential techniques possible?

In the recent months we all saw kind of breakthrough in Android Smartphone GNSS receivers: GNSS raw measurements are now accessible, and this is significant since those are the most common form of ...
1
vote
1answer
501 views

DGPS post-processed Kinematic (PPK)

I did a dGPS survey last summer. Unfortunately, we didn't have a base station. So I did my survey in post-processed Kinematic PPK mode. Because we borrowed the equipment, we don't have access to post-...