An optical sensor net system for measuring the relational dynamic
information of a spheroidal projectile. A support frame for the system may
include light emitters that generate divergent non-parallel rays of light.
The non-parallel rays of light emitted may be directed to and received by
a plurality of light detectors substantially arranged within a single
plane. The intersecting non-parallel rays of light may form an
asymmetrical optical sensor net that may also capture both golf ball and
golf club information as they pass through. The light detectors that
receive the rays of light may be spaced apart at preselected locations and
distances less than the diameter of a spheroidal object such as a golf
ball. A data processor or computer may be connected to the sensor net to
detect relational spatial information for the golf ball and the golf club,
and to determine instantaneous dynamic information for either including
ball velocity or club speed based at least in part on the locations of the
rays of light which are blocked off, and the measured time in which the
rays of light emitted to the light detectors are interrupted and monitored
by clock instrumentation. The optical sensor net and support frame may be
tilted at preselected angles to capture relatively more information for a
wide range of golf shots providing enhanced resolution of images depicting
the golf ball and/or golf club.