| 摘要 |
PURPOSE:To precisely obtain a desired signal by revising the weighting in the digital matched filter without controlling transmission power. CONSTITUTION:A received wave is made into multiple bit by A/D converters 7, 8, correlators 9, 10 take correlation with a setting value at every bit and each correlatiors value is to weighting shift circuits 20, 21. Each correlation value subjected to weighting is added by an adder 13 and the result is outputted via a square circuit 15. The outputted synthesized correlation value is compared with a prescribed threshold level by a correlation value discrimination circuit 22 and the weighting coefficient of the circuit 20 is revised depending on the result. |
