Title:
【発明の名称】レーダ装置
Document Type and Number:
Japanese Patent JP3160292
Kind Code:
B2
Abstract:
PCT No. PCT/EP94/02905 Sec. 371 Date Mar. 7, 1996 Sec. 102(e) Date Mar. 7, 1996 PCT Filed Sep. 1, 1994 PCT Pub. No. WO95/07472 PCT Pub. Date Mar. 16, 1995A radar apparatus having a phased array antenna with a large number of transmit and receive modules, a control unit and a video processor. The control unit generates a number of pulse bursts per azimuth-elevation direction, all of which shows slight carrier frequency differences. The video processor determines a doppler spectrum and compared successive spectra for each pulse burst. As a result of the frequency differences, clutter does not show much of a shift while targets which are subject to fold-back in the frequency domain will show considerable shift. A threshold based on a mean spectrum therefore enables detection.
Inventors:
Herekink Bernardo
Application Number:
JP50844195A
Publication Date:
April 25, 2001
Filing Date:
September 01, 1994
Export Citation:
Assignee:
Holland Cignard Appalarten Besloten Fennaught Shap
International Classes:
G01S7/02; G01S7/292; G01S13/24; G01S13/524; G01S13/02; G01S13/53; (IPC1-7): G01S13/524; G01S7/292; G01S13/24
Domestic Patent References:
| JP3180792A | ||||
| JP3248077A | ||||
| JP6443784A | ||||
| JP26780A | ||||
| JP6024476A | ||||
| JP61140881A | ||||
| JP61155882A | ||||
| JP1500774A |
Other References:
【文献】米国特許4496949(US,A)
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)