Accession Number:

ADD002903

Title:

Circuit for Generating a Digital or Analog Signal as a Function of Doppler Frequency.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s):

• Linder,John L.

Report Date:

1976-05-18

Pagination or Media Count:

10.0

Abstract:

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.

Descriptors:

• *Sweep generators
• *Patents
• Satellite tracking systems
• Doppler systems
• Circuits
• Digital systems
• Analog systems
• Signal generators
• Receivers

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE