Rifle projectiles follow complex trajectories influenced by many factors, including wind. There is currently no man-portable, low-cost, low-SWaP technology available to capture the trajectory of a standard rifle projectile in field conditions. Vadum proposes a new approach to capture projectile trajectory from the point of origin to the point of impact. The low-latency measurement technique is capable of enabling rapid corrections to the point of aim for follow-up shots, and requires minimal modifications to existing weapons, projectiles, and aiming systems. In Phase I, Vadum will establish the feasibility of this new approach and bound the required size, weight, and power to perform trajectory measurement in daytime and nighttime.