×

GNSS long-code acquisition, ambiguity resolution, and signal validation

  • US 9,658,341 B2
  • Filed: 05/17/2013
  • Issued: 05/23/2017
  • Est. Priority Date: 04/28/2006
  • Status: Active Grant
First Claim
Patent Images

1. A system for providing direct acquisition of a spread spectrum RF emission, comprising:

  • at least one emitter that emits a spread spectrum RF emission using a code sequence within a transmission medium;

    at least one interceptor that receives the emission propagated through the transmission medium from the at least one emitter, the interceptor comprising;

    a spectral compressor configured to process the intercepted spread spectrum RF emission using spectral compression utilizing a non-linear operation to produce at least one of a chipping or a carrier-related observable;

    a physical state estimator configured to determine at least one member of a relative physical state between the interceptor and the at least one emitter and a domain of code chips for at least one code assigned to the at least one emitter based on the at least one observable; and

    a cross correlator configured to search the domain of code chips for a code assigned to the at least one emitter.

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