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Compensation for receiver and satellite signal differences

  • US 5,526,291 A
  • Filed: 09/08/1994
  • Issued: 06/11/1996
  • Est. Priority Date: 09/08/1994
  • Status: Expired due to Fees
First Claim
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1. A method for compensation of a receiver/processor (R/P) that receives electronic communication signals from at least two signal sources, the method comprising the steps of:

  • providing first, second and third receiver/processors, numbered R=R1, R=R2 and R=R3, respectively, located at the same site;

    providing two signal sources, numbered S2 and S3, that are spaced apart from the first, second and third R/Ps and that transmit second and third signals that are received and processed as time-varying signals S(t;

    R;

    SV) (SV=S2 and S3) by the receiver/processors R=R1 R=R2 and R=R3 ;

    forming double difference '"'"'signals ##EQU3## forming time averaged signals ##EQU4## where T is a selected time interval of length in the range 120≦

    T≦

    1800 sec;

    forming the compensated signals ##EQU5## forming a compensated signal, for the second and third source signals and for second and third receiver/processors that are not confined to the same site, that is defined by
    
    
    space="preserve" listing-type="equation">DDC(t;

    R.sub.2 ;

    R.sub.3 ;

    S.sub.2 ;

    S.sub.3)=DDC(t;

    R.sub.1 ;

    R.sub.2 ;

    S.sub.2 ;

    S.sub.3)-DDC(t;

    R.sub.1 ;

    R.sub.3 ;

    S.sub.2 ;

    S.sub.3).

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