QField Feature Requests

Additional Settings Needed for Accuracy Requirements and GNSS Averaging
QField offers settings for "Enforce accuracy requirement" and, when averaging GNSS positions, for "Minimum number of positions collected". Additional settings are needed. Along with the linear accuracy thresholds, there also needs to be a position quality threshold for the value of the Quality field of the NMEA GGA messages from the GNSS device. The threshold would range from "Autonomous" or "Single Point" as the least restrictive, to DGNSS, to RTK Float, and to RTK Fix as the most restrictive. If the current quality value does not equal or exceed the position quality threshold, then collection of new measurements should be prevented, similarly to the effect of the existing "Enforce accuracy requirement" setting. This will ensure that measurements are not collected that do not meet the user's quality needs. If the position quality drops below the position quality threshold, the accuracy indicator badge attached to the location button should turn red, again, similarly to the effect of the existing "Enforce accuracy requirement setting. During averaging of GNSS positions, if the position quality drops below the position quality threshold, the low-quality positions should not be incorporated into the average, nor cause the displayed count of positions to increment, i.e. averaging should pause. When the position quality rises to equal or exceed the position quality threshold, the averaging and incrementing should resume. This too will ensure that measurements are not collected that do not meet the user's quality needs. If the position quality threshold is implemented, an additional enhancement that would be helpful is another GNSS averaging setting for a time limit (with a resolution of 1 second and a maximum of at least 10 minutes — but really, the setting should allow specifying arbitrary hours, minutes, and seconds). When either the number of averaged positions (with quality values that equal or exceed the position quality threshold) reaches the existing "Minimum number of positions collected" setting, or the time limit setting is reached, the averaging should terminate. If the termination is because of reaching the time limit, the user should be presented with the option to either accept or reject the averaged measurement. The number of positions that were incorporated into the average should be easily visible while that option is presented. Note: These recommended features are typical of other GNSS data collection software.
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