Optimally Calculating and Plotting Satellite Subpoints for AO-85 (Fox-1A) CPU Resets

摘要

Before it was even launched, during development of the Fox-1A satellite, Tony Monteiro, AA2TX (SK),predicted that the satellite could reset often, frequently over the South Atlantic Anomaly, and heencouraged the development of an onboard recovery mechanism to survive these resets. Based on ourexperiences with the ARISSat-1 satellite resetting on every orbit, we knew it would be every desirable toknow when each reset occurred and how many resets had occurred. ARISSat-1 had no way of countingthe resets or saving the time of the reset. After several days in orbit the ARISSat-1 battery would nolonger take a charge, causing the satellite to power off each and every time it entered eclipse and poweron/reset every time it exited eclipse.