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A TVRO earth station having a satellite seeking system comprising at least one controllable motor for adjusting the position of an antenna for receiving signals from a satellite having multiple transponders transmitting signals at prescribed nominal center frequencies and with different polarization

A TVRO earth station having a satellite seeking system comprising at least one controllable motor for adjusting the position of an antenna for receiving signals from a satellite having multiple transponders transmitting signals at prescribed nominal center frequencies and with different polarizations, control means for energizing the motor to move said antenna along a predetermined satellite-searching path, a receiver for receiving the incoming signals from the antenna and successively tuning to the center frequencies at each of a succession of intervals along the searching path, means responsive to the signals detected by the receiver for producing a signal or value representing the quality of the detected signals at each of the successive intervals along the searching path, and means responsive to the quality-representing signal or value for identifying the locations along the searching path at which the antenna receives signals from a satellite.

대표청구항 ▼

A TVRO earth station having a satellite seeking system comprising at least one controllable motor for adjusting the position of an antenna for receiving signals from a satellite having multiple transponders transmitting signals at prescribed nominal center frequencies and with different polarization

A TVRO earth station having a satellite seeking system comprising at least one controllable motor for adjusting the position of an antenna for receiving signals from a satellite having multiple transponders transmitting signals at prescribed nominal center frequencies and with different polarization, control means for energizing said motor to move said antenna along a predetermined satellite-searching path, a receiver for receiving the incoming signals from said antenna and successively tuning to said center frequencies at each of a succession of intervals along said searching path, means responsive to the signals detected by said receiver for producing signals or values representing the quality of the detected signals at each of said successive intervals along said searching path, at least one of said signals representing the noise level associated with the detected signals and not representing the signal level associated with the detected signals, and means responsive to said quality-representing signals or values for identifying the position along said searching path at which the antenna receives the detected signals with a minimum noise figure.