Title:
TARGET EXTRACTION SYSTEM, TARGET EXTRACTION METHOD, AND INFORMATION PROCESSING DEVICE AND CONTROL METHOD AND CONTROL PROGRAM FOR SAME
Document Type and Number:
WIPO Patent Application WO/2015/136823
Kind Code:
A1
Abstract:
To acquire a beat frequency necessary for target detection, target speed estimation, and Doppler effect detection by preventing the necessary beat frequency from overlapping with an unnecessary frequency in heterodyne processing results, the present invention is provided with a wave reception unit for receiving a chirp wave reflected by a target and outputting a wave reception signal, a dual-sweep signal generation unit for generating a chirp-wave dual-sweep signal having a frequency that does not overlap with that of the chirp wave, and a heterodyne processing unit for multiplying the wave reception signal by the dual-sweep signal, which serves as a heterodyne signal, and thereby generating a beat frequency.
Inventors:
HOSYUYAMA OSAMU (JP)
Application Number:
PCT/JP2014/084613
Publication Date:
September 17, 2015
Filing Date:
December 26, 2014
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01S15/34; G01S13/34
Foreign References:
| US7149148B2 | 2006-12-12 | |||
| JPH05240945A | 1993-09-21 |
Other References:
GUYONIC STEPHANE: "Traitement d'ouverture synthetique sur des donnees simulees d'un sonar a emission continue modulee lineairement en frequence (CTFM).", TRAITEMENT DU SIGNAL 1994, vol. 11, no. 4, 1994, pages 315 - 324, XP055223734, ISSN: 0765-0019
Attorney, Agent or Firm:
KATO TAKASHI (JP)
Takushi Kato (JP)
Takushi Kato (JP)
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