Hi,I am planning to put a GPS receiver in my model airplane to log the position. However, most receiver specifications has a limit of 4g acceleration. My airplane is fast and accelerates more than this in the curves... Have you experienced any problems with this? Are there receivers that can handle more acc?
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If you do not need SiRF binary there are a couple of 10Hz options out there, and the 4g limitation is pretty much exactly as Mr. Bosak describes it. SO to be clear, it is not that they cannot "handle" the g's - it is that the data you get out of them may be useless at the speed / inclinations you will be pushing it to. A diversity antenna IS an option, but it could take some work to implement...how good are you with that soldering iron and slide rule??
Most problems are related to the fact that in order to fly with that high G you need high bank angle what translates to poor satellite reception on unreliable altitude and course. Also this means large course changes so rules out 1Hz GPS completely.
The effect of dropped satellites is so strong that the fact that G filtering is being applied is difficult to quantify.
Of course flying in FPV is another thing, but for reliable UAV, there are mostrly problems with reception.
My recommended angles are around +/-40 deg bank if assisted by gyro, or 20-25deg on long range missions without gyro and baro, or special GPS antenna setup.
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The effect of dropped satellites is so strong that the fact that G filtering is being applied is difficult to quantify.
Of course flying in FPV is another thing, but for reliable UAV, there are mostrly problems with reception.
My recommended angles are around +/-40 deg bank if assisted by gyro, or 20-25deg on long range missions without gyro and baro, or special GPS antenna setup.