发明名称 |
Directive transducer system for Doppler measurements - includes phase shift correction and comparator circuits to ensure received signals arrive from predetermined direction |
摘要 |
<p>The appts. uses transducers which are connected to a phase shift circuit which compensates for the transducer output signals to ensure that the signals are in phase when received from a partic. direction. A phase comparator contains limiters which square the phase shift circuit outputs. These signals are applied to a test circuit containing gates to produce a gating signal for a gate receiving the output from a check circuit. The check circuit contains delays in two reference circuits to enable a tolerance signal to be generated for the identification of the phase of the input signals. The output passes through the gate to a modulator operating the phase shifted sum of the output signals from the input phase shift circuit. A measuring circuit determines the information content of the modulated signals.</p> |
申请公布号 |
FR2496901(A1) |
申请公布日期 |
1982.06.25 |
申请号 |
FR19810024124 |
申请日期 |
1981.12.23 |
申请人 |
KRUPP GMBH FRIED |
发明人 |
WOLFGANG STEDTNITZ |
分类号 |
G01S7/523;G01S7/526;G01S15/50;G01S15/60;(IPC1-7):01S15/60 |
主分类号 |
G01S7/523 |
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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