This paper presents a simple antenna system for land vehicle communication aimed at Engineering Test Satellite-VIII (ETS-VIII) applications. The developed antenna system which mounted into a vehicle is compact, light weight and simple satellite-tracking operation. Owing to low profile, a patch array antenna, which includes onboard-power divider and switching circuit for antenna feeding control, is applied at such system. A Global Positioning System (GPS) receiver is constructed to provide accurate information on the vehicle's position and bearing during travelling. The personal computer (PC) interfaces as the control unit and data acquisition, which specifically designed for this application, allow the antenna beam-switching control as well as the retrieving of the received power levels. Measured results of the received power levels as well as the bit error rate performance for satellite-tracking are discussed.