Determination of Antenna Direction Using TV Signal-Strength Data |
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Authors: | Yokoyama S. |
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Affiliation: | NHK Technical Research Laboratories, Japan; |
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Abstract: | A unique method of determining a satellite's antenna direction error, which includes the effects of sensor-errors, reflector thermal distortion, etc., was developed. The principle of the method is to apply a nonlinear least squares method to variations in signal strength received simultaneously at various ground stations to obtain the movement of a premeasured antenna gain pattern. Applying this method to the Japanese medium-scale broadcast satellite for experimental purposes, the system's capability and usefulness were confirmed. |
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