发明名称 |
AUTOMATIC CORRECTION OF THE AMPLIFICATION OF ECHO PULSES |
摘要 |
The automatic pulse amplitude compensation for the reflected pulses received by an echo-sounder or ultrasonic transducer. The circuit hunts for an optimum compensation as a function of reflection time and holds it automatically. Compensation is based on the use of a multivibrator fed both by the reflected signal and an error correction signal derived from an analogue memory addressed by sequential accessing using a differential amplifier. Correction is derived from the reflected signal via a detector and an analogue gate. The memory includes a twin input summing circuit receiving the signal to be stored and that from an analogue phase shift register. |
申请公布号 |
AU4218478(A) |
申请公布日期 |
1979.06.14 |
申请号 |
AU19780042184 |
申请日期 |
1978.12.04 |
申请人 |
PHILIPS' GLOEILAMPENFABRIEKEN, N.V. |
发明人 |
MICHEL JOSEPH AUPHAN;LUDO CASPER JOHANNES BAGHUIS |
分类号 |
G01S7/52;H03G3/20 |
主分类号 |
G01S7/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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