Partial Correlation (epo) Patents (Class 375/E1.008)
  • Patent number: 11828869
    Abstract: A narrowband AJ signaling system includes an AJ processor placed between a high precision analog-to-digital (ADC) converter and a narrowband digital receiver. In another example, the AJ processor is placed between the high precision ADC and a digital-to-analog converter (DAC). The AJ processor of either example may suppress the jammer power down to the level of the noise floor of the system.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: November 28, 2023
    Assignee: THE AEROSPACE CORPORATION
    Inventor: Philip A Dafesh
  • Patent number: 8396097
    Abstract: In one exemplary embodiment of the invention, a device includes: a first frequency search engine configured to receive input values and determine a frequency of a signal to be within a first frequency band; a second delay component configured to store at least a portion of the plurality of input values; and a second frequency search engine configured to determine the frequency of the signal to be within a second band that is a subset of the first band. The first frequency search engine includes: a shift register configured to store bits of the input values; a combining circuit configured to combine bits of the plurality of input values; a first delay component configured to serially store a plurality of accumulator values; and a feedback circuit configured to add a function of the first delay component output to a next accumulator value to obtain a modified next accumulator value.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: March 12, 2013
    Assignee: L-3 Communications Corp
    Inventors: Thomas R. Giallorenzi, Johnny M. Harris, Matthew A. Lake, Samuel C. Kingston, Myren Iverson