| 摘要 |
A phase array spread spectrum system for maximizing signal strength of a spread-spectrum signal with multipath through the use of receiving means, delaying means, combining means, despreading means, generating means, storing means and comparing means. The receiving means receives a plurality of spread-spectrum signals and a plurality of phased versions of the plurality of spread-spectrum signals. The delaying means delays the received plurality of spread-spectrum signals with respect to the plurality of phased versions of the plurality of spread-spectrum signals by a plurality of delays. The combining means combines the delayed spread-spectrum signals and the plurality of phased versions of the plurality of spread-spectrum signals as a plurality of combined signals. The despreading means despreads the plurality of combined signals as a plurality of despread signals. The generating means generates a plurality of magnitude values from the plurality of despread signals. The storing means stores a plurality of previous-magnitude values previously generated by the generating means and a plurality of present magnitude values presently generated by the generating means. The comparing means compares the previous-magnitude values and the present-magnitude values and, responsive to the comparison, outputs a plurality of comparison signals. The delaying means responds to the plurality of comparison signals by lengthening or shortening the plurality of delays.
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