GPS receivers exported to the US are required to impose limitations on their operation based on the speed and altitude of the utilizing craft. It is possible to work around these limitations by low-level programming the device, known as putting it in Flight Mode (aka Nav Mode). One of the purposes of the balloonsat flight is to show telemetry for altitudes above the ceiling, verifying that the u-blox GNSS receiver can successfully configured to Flight Mode and will continue to update past the limitation. (See comment below)
Knowledge
Arduino code setting another u-blox GPS Rx to Flight Mode.
u-blox M8 receiver description and protocol specification.
Description
GPS receivers exported to the US are required to impose limitations on their operation based on the speed and altitude of the utilizing craft. It is possible to work around these limitations by low-level programming the device, known as putting it in Flight Mode (aka Nav Mode). One of the purposes of the balloonsat flight is to show telemetry for altitudes above the ceiling, verifying that the u-blox GNSS receiver can successfully configured to Flight Mode and will continue to update past the limitation. (See comment below)
Knowledge