Abstract: A single axis tracking system for a satellite moving in an inclined orbit. A linear antenna mount is used which is equipped for longitudinal tilt adjustment to enable an antenna to accurately track the longitudinal centerline of the figure 8 path of a satellite in an inclined orbit from any geographic location within the footprint of the satellite. The trajectory of the satellite is determined relative to the geographic location of the antenna mount. A time referenced tracking control signal moves the antenna mount. The signal from the satellite is periodically sampled and compared with stored values to verify the calculated trajectory. If a significant deviation occurs over a predetermined period, a new trajectory is automatically calculated and the time referenced trajectory signal is adjusted accordingly.

Abstract: A track or drive belt assembly primarily for use with snowmobiles. The drive belt assembly includes a unitarily formed, continuous or endless, flexible drive belt having an inner side and an outer ground engaging side. The unitary drive belt assembly includes a central endless section and a pair of laterally spaced endless side sections. A plurality of longitudinally spaced members unitarily interconnect the side sections to the central belt section. A plurality of unitary drive lugs project inwardly from the inner side of each of the belt sections and selected lugs are located proximate to the unitary interconnecting members. A plurality of rigid members are connected to the drive belt. Each rigid member has a first section that is fixed to the one interconnecting member and a second or offset section which is in supporting and cooperative relationship with each of the selected lug members.