US Patent 9784973 Micro doppler presentations in head worn computing

Aspects of the present disclosure relate to visual presentation techniques for micro-Doppler signatures. A method may include receiving a micro Doppler signature indicative of a projectile flight path, identifying a beginning trace marker and a termination trace marker, and presenting in a head-worn computing system field of view digital content representative of the projectile flight path, wherein the beginning trace marker and termination trace marker provide a world-lock perspective for a wearer of the head-worn computing system such that the digital content appears to remain referenced to the environment independent of a position of the head-worn computing system.