GPS ru
Inhaltsverzeichnis
Описание
С помощью GPS-приемника (например, GY-NEO6MV2, ublox 6m), долгосрочные позиции могут быть рассчитаны. Таким образом, значения позиции GPS будет в среднем. В настоящее время GPS используется чтобы получить текущую дату и время.
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.
hdop measurement error indication (the more satellites are from different directions, the lower the error) sat number of satellites in view spd ground speed m/s course ground course degree alt altitude meter lat latitude lon longitude
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.