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| When I survey using RTK and I see a CQ value of 0.05m, what does this really mean? |
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| It is always very difficult to predict the true accuracy of any measured point with GPS and all GPS systems use statistical algorithms to estimate the quality (or accuracy) of measured points. System 500 is designed to give the most realistic value for the quality of the co-ordinates that are being computed. The CQ value that is shown takes into account such factors as the constellation of the satellites (the DOP value) , the quality of the GPS signal being received (how noisy the signal is) and other environmental factors. Usually, the given CQ is pessimistic - that is, the true CQ is actually better than the value that is shown, but also, occasionally the true CQ could be worse.
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