Global patent index - EP 0897544 A4

EP 0897544 A4 2000-05-24 - RADAR/SONAR SYSTEM CONCEPT FOR EXTENDED RANGE-DOPPLER COVERAGE

Title (en)

RADAR/SONAR SYSTEM CONCEPT FOR EXTENDED RANGE-DOPPLER COVERAGE

Title (de)

RADAR/SONAR-SYSTEMKONZEPT FÜR ERWEITERTEN ENTFERNUNGS-DOPPLER-ERFASSUNGSBEREICH

Title (fr)

CONCEPT DE SYSTEME RADAR/SONAR POUR COUVERTURE DISTANCE/DOPPLER ETENDUE

Publication

EP 0897544 A4 (EN)

Application

EP 97927606 A

Priority

  • US 9706807 W
  • US 1677996 P
  • US 79674997 A

Abstract (en)

[origin: WO9742520A1] A method and apparatus for preventing the occurence of range ambiguities and Doppler ambiguities in both a radar and sonar environment. A series of N pulses are produced, each of which contains a number of contagious subpulses. Each of the subpulses exhibits a different frequency than the remaining subpulses in that particular pulse. Furthermore, the order of appearance of the subpulses in each of the pulses is unique with respect to the remaining pulses in the series. A matched filter receiver (10) and Doppler processor (30) are used to provide auto correlations and cross correlations (R1-RN) to prevent the range ambiguities and Doppler ambiguities.

IPC 1-7 (main, further and additional classification)

G01S 13/90; G01S 13/28; G01S 13/526; G01S 13/53; G01S 13/58

IPC 8 full level (invention and additional information)

G01S 13/526 (2006.01); G01S 13/53 (2006.01); G01S 13/58 (2006.01); G01S 13/90 (2006.01); G01S 15/52 (2006.01); G01S 13/20 (2006.01); G01S 13/22 (2006.01); G01S 13/24 (2006.01); G01S 15/58 (2006.01); G01S 15/89 (2006.01)

CPC (invention and additional information)

G01S 13/582 (2013.01); G01S 13/20 (2013.01); G01S 13/22 (2013.01); G01S 13/24 (2013.01); G01S 13/90 (2013.01); G01S 15/584 (2013.01); G01S 15/8904 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9742520 A1 19971113; AU 3203497 A 19971126; AU 712338 B2 19991104; CA 2253235 A1 19971113; EP 0897544 A1 19990224; EP 0897544 A4 20000524; IL 126925 D0 19990922; JP 2000509811 A 20000802; NO 985154 A 19981223; NO 985154 D0 19981105

INPADOC legal status

2000-07-05 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20000420

2000-05-24 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20000407

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-05-24 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7G 01S 13/90 A, 7G 01S 13/526 B, 7G 01S 13/53 B, 7G 01S 13/28 B, 7G 01S 13/58 B

1999-02-24 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19981105

1999-02-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE