×

Programmable digital acquisition and tracking controller

  • US 5,105,437 A
  • Filed: 07/26/1990
  • Issued: 04/14/1992
  • Est. Priority Date: 07/26/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A programmable digital acquisition and tracking controller for a PN communications receiver, comprising:

  • summing means having programmable threshold inputs and a signal level input indicative of correlation of two PN codes,programmable accumulator means coupled to the output of said summing means for generating signals indicative of an average correlation value of said two PN codes within a programmable time period,programmable detector logic means coupled to the output of said programmable accumulator means and having a correlation detection signal output and a plurality of control signal outputs,programmable time counter means having a programmable input for producing a count output which is coupled to said detector logic means for presetting a value indicating the end of said programmable time period, andsaid output of said programmable detector logic circuit means being adapted to close a plurality of tracking loops in said communications receiver upon detection of correlation of said two PN codes and to initiate said control signals to maintain tracking.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×