Physical modeling of nuclear detonations in DIRSIG

Digitized historic film data were used to model the fireball of a nuclear detonation and simulate the sensor response within the Digital Imaging and Remote Sensing Image Generation (DIRSIG) model. Historic films were used to determine the temperature and dimensions of the nuclear fireball and create an input to DIRSIG. DIRSIG was used to analyze how environmental interactions change the optical signal received by a realistic sensor.