Anybody here has experience with trying to remove the export-control velocity and altitude limits from any of the popular GPS receivers? I am thinking U-blox, Mediatek or SiRF. I know these limits can be removed from the high-end units from Novatel, Ashtech or Trimble by going through some paperwork and paying the "tax", but I wonder if this is even possible for the hobby UAV level units.
Ian
Clarifications: The application is high power rocketry where the limits will be passed so not removing the limits is not an option. Also I have done the process of removing the limits for Novatel units so I know this is possible if you meet the requirements.
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an arm ads or realview compiler you can make some changes. However there are still caps on aquisition dynamics etc.
SIRF have to supply you libraries to allow true high G, high dynamics. We supplied such software to military users only
after Sirf coverd the legal paperwork. Balloons only had to have peak altitude limits adjusted, this was less of an issue as they did not travel at speeds higher than say 120 knots.