search

coloradocube / balloonsat

COTS balloonsat mission to test the RPi 4 with a battery UPS, a quad camarray, a GPS module, a RockBLOCK module, and a small number of Qwiic sensors
0 stars 5 forks source link

Programmatically set u-blox GNSS receiver to Flight/Nav Mode and verify #12

Open ivogeorg opened 2 years ago

ivogeorg commented 2 years ago

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

  1. Arduino code setting another u-blox GPS Rx to Flight Mode.
  2. u-blox M8 receiver description and protocol specification.
ivogeorg commented 2 years ago

GPS Receiver Ceiling Discussion

Overview

This is in support of the requirement to configure the receiver into Flight (or Nav) Mode.

Links

Live links from the following image:

  1. https://www.govinfo.gov/content/pkg/FR-1998-01-15/pdf/98-1.pdf
  2. https://www.federalregister.gov/documents/2014/05/13/2014-10806/amendment-to-the-international-traffic-in-arms-regulations-revision-of-us-munitions-list-category-xv

Discussion conclusion

Discussion between @ivogeorg and Randy Owen (MSU Denver) image