US2008063119A1PendingUtilityA1

Modulation signals for a satellite navigation system

39
Assignee: SEC DEP FOR DEFENSE UKPriority: Sep 1, 2003Filed: Jul 6, 2007Published: Mar 13, 2008
Est. expirySep 1, 2023(expired)· nominal 20-yr term from priority
Inventors:Anthony Richard PrattJohn Ivor Rewbridge Owen
G01S 19/02H04L 27/2601
39
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Claims

Abstract

A method of generating a subcarrier modulation signal for modulating a further signal, the method involving multiplexing or selectively combining portions of first and second subcarriers to produce the subcarrier modulation signal.

Claims

exact text as granted — not AI-modified
1 . A method of generating a subcarrier modulation signal for modulating a further signal, the method comprising the step of multiplexing or selectively combining portions of first and second subcarriers to produce the subcarrier modulation signal.  
     
     
         2 - 97 . (canceled)  
     
     
         98 . A method as claimed in  claim 1  wherein said multiplexing or selectively combining portions of first and second subcarriers to produce the subcarrier modulation signal comprises combining a portion of the first subcarrier, spanning a respective time interval, and a portion of the second subcarrier, spanning a respective time interval.  
     
     
         99 . A method of generating a subcarrier modulation signal for modulating a further signal, the method comprising the step of selectively combining portions of first and second subcarriers to influence thereby the location of spectral peaks associated with said first and second subcarriers within the spectrum of the subcarrier modulation signal.  
     
     
         100 . A subcarrier modulation signal for modulating a further signal, the subcarrier modulation signal comprising multiplexed or selectively combined portions of first and second subcarriers to produce the subcarrier modulation signal.  
     
     
         101 . A subcarrier modulation signal as claimed in  claim 100  wherein the portion of the first subcarrier comprises a portion of the first subcarrier, spanning a respective time interval, and the portion of the second subcarrier comprises a portion of the subcarrier, spanning a respective time interval.  
     
     
         102 . A subcarrier modulation signal comprising multiplexed or selectively combined portions of first and second subcarriers.  
     
     
         103 . A subcarrier modulation signal comprising selectively combined portions of first and second subcarriers arranged to influence thereby the location of spectral peaks associated with said first and second subcarriers within the spectrum of the subcarrier modulation signal.  
     
     
         104 - 165 . (canceled)

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