Circuit for Generating a Digital or Analog Signal as a Function of Doppler Frequency.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to a control circuit having a digital memory for providing sweep voltages to receivers 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 digiswitches or from a digital memory circuit which outputs a digital signal that is a function of the frequency of a received doppler signal.
- Electrical and Electronic Equipment