| 摘要 |
<p>PURPOSE:To provide a proximity fuse in which a single antenna serves for signal transmitting and receiving and which can eliminate saturation of a receiver machine. CONSTITUTION:Output of an oscillator 1 is subjected to a spectral diffusive modulation and pulse modulation and transmitted from an antenna 6, and upon receiving reflected waves from a target by this antenna 6, intrusion due to leakage of the transmission waves is precluded by a high frequency gate circuit, followed by a homodyne detection, and further intrusion due to leakage of transmitted waves is prevented by a gate circuit, followed by a video amplification and a correlation detecting. Therein part of the output of the oscillator 1 for homodyne detecting and the symbol for correlational detection are supplied to a mixer 8 and the first and the second correlational detector 11a, 11b, respectively, only during the signal receiving time, and thereby intrusion due to leak of the transmitted waves into the receiver machine is prevented.</p> |
