I just want to make sure I fully understand this product before purchase. Correct me if I am wrong, but it seems that I should be able to buy two of them and have one configured as a base station to transmit correction data to the second one which can be moved freely. The moving one should then be able to achieve accuracy within a couple of inches. Is that correct?
There’s nothing wrong with the NEO-M8P, but you will get better performance from a ZED-F9P, or the LG290P, etc.
The new SparkFun RTK Postcard looks exciting to me.
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@PreownedQuasar Your understanding is accurate (with appropriate antennae attached)
This one is also an option that receives its correction data via satellite, so only 1 device is needed
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@TS-Russell Awesome, thanks! Would the antenna only be required for the base station, or would I need one on the moving platform as well? For reference, I am looking at the following antenna: GNSS L1/L2 Multi-Band Magnetic Mount Antenna - 5m (SMA)
I am also thinking about having the moving base station GPS module output its data to be read by an Arduino Uno (or Mega), am I correct that these should be compatible?
Both ends would need an antenna.
The GNSS L1/L2 Multi-Band Magnetic Mount Antenna - 5m (SMA) - GPS-15192 - SparkFun Electronics would work
The NEO-M8P is L1 Only, so the RTK ambiguity resolution time is on the order of 7 minutes, vs the 7 seconds of the ZED-F9P (L1&L2)
The ANN-MB is not suitable for L5 usage
Might be time to migrate to 3.3V Arduinos…
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I hadn’t seen that module before, but it does look like ZED-F9P is probably better for my application. If I were to go with that solution, I could keep the same antenna and still use two of them (base and rover). It is significantly more expensive than NEO-M8P-2 though. What exactly is the effect of ambiguity resolution time?
The time it takes to get you a 2cm RTK Fixed solution, and recover when signal lock is lost