Spatial-time factor, spatial time acquisition, acquisition of signal at point in space at instant
in time, acquisition of signal frequency. Timing control transmitted by Army Satellite terminal camp roberts california,
fort dix new jersey, helemano hawaii. Fort Dix retransmits to all atlantic european african areas, down link
frequency variations dependent on orbital geometry. frequency variation greatest in medium altitude circular orbits
and elliptical orbits. Smallest frequency variations from satellites in near synchronous and synchronous orbits.
program tracing known orbital parameters of satellite compute antenna pointing angles. narrow beam width antennas.
affected by atomospheric bending of radio waves in atmospheric and ionospheric condtions.
Satellite outage time specifications for DSCS allocates 120 seconds for slewing earth terminal antennas,
acquiring satellite signal. Drift velocities of Phase I IDSCS satellites lead to bunching of satellites with gaps.
Satellite sun conjunction cause outae.
