GPS: Unterschied zwischen den Versionen
(→Visualization of GPS data) |
(→Visualization of GPS data) |
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| Zeile 18: | Zeile 18: | ||
= Visualization of GPS data = | = Visualization of GPS data = | ||
| − | GPS data (course, speed, position etc.) can be plotted by pfodApp | + | GPS data (course, speed, position etc.) can be plotted by pfodApp. One neat thing I discovered is that you can get precise heading and speed even when moving short distances (< 2m). This works because the GPS receiver is evaluating the signal phase due to the doppler effect. |
<gallery> | <gallery> | ||
File: gpsplot.jpg | GPS plot | File: gpsplot.jpg | GPS plot | ||
| − | File: gpsplotting.jpg | GPS plot (heading/speed via doppler) | + | File: gpsplotting.jpg | GPS plot (heading/speed via doppler effect) |
File: gpstracking.jpg | GPS 2d map (tracked perimeter) | File: gpstracking.jpg | GPS 2d map (tracked perimeter) | ||
</gallery> | </gallery> | ||
Version vom 27. Februar 2015, 20:30 Uhr
Inhaltsverzeichnis
Abstract
With the help of a GPS receiver (e.g. GY-NEO6MV2, ublox 6m), the long-term position can be calculated. Therefore, the GPS position values will be averaged.
Currently, GPS is used
- to receive current date and time
Wiring:
GPS TX (3.3V compatible) -- Arduino RX GPS RX (3.3V compatible) -- Arduino TX GPS VCC -- Arduino VCC 5V GPS GND -- Arduino GND
Visualization of GPS data
GPS data (course, speed, position etc.) can be plotted by pfodApp. One neat thing I discovered is that you can get precise heading and speed even when moving short distances (< 2m). This works because the GPS receiver is evaluating the signal phase due to the doppler effect.
GPS plot
GPS plot (heading/speed via doppler effect)
GPS 2d map (tracked perimeter)
GPS error
Typical GPS error is 2-5 meters (at a sample rate of 1 Hz). As this is not sufficient as a replacement for a perimeter wire, GPS can only be seen as an extension or for global navigation (navigation from one lawn to another lawn) or to improve the result of a sensor fusion.
