发明授权
- 专利标题： Ramp function generator
- 专利标题（中）： 斜坡函数发生器
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申请号： US564022申请日： 1975-03-31
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公开(公告)号： US3971923A公开(公告)日： 1976-07-27
- 发明人: John L. Linder
- 申请人： John L. Linder
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the Secretary of the Navy
- 当前专利权人： The United States of America as represented by the Secretary of the Navy
- 当前专利权人地址： DC Washington
- 主分类号： G01S11/10
- IPC分类号： G01S11/10 ; G01S13/58 ; G01S13/66 ; H03K4/48 ; H03K4/08 ; G06J1/00
摘要：
A control circuit having a digital memory for providing sweep voltages to ceivers in a doppler satellite tracking station of proper amplitude and duration to ensure searching in the correct doppler frequency range. An internally generated ramp function voltage is combined with a reference voltage to produce a composite sweep signal for the receiver. The reference voltage level is determined either from a set of digi-switches or from a digital memory circuit which outputs a digital signal that is a function of the frequency of a received doppler signal.
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