Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2005-04-11
2008-05-27
Le, Que T. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C250S216000
Reexamination Certificate
active
07378629
ABSTRACT:
The invention relates to a detection device, comprising a parabolic mirror (1) and several radiation detectors (2-5). The detectors are placed in the focal plane (O, X′-X, Y′-Y) of the mirror with respective spacings in a common fixed direction (Y′-Y). The detection device further comprises a selector system, connected to each of the detectors (2-5), embodied to successively select each of the detectors and to transmit a received signal from the selected detector. The separations of the detectors (d2-d5) are selected such that a gain diagram, for the reception of said device, has a gain minimum, between two successive gain maxima, each corresponding respectively to one of the detectors, of less than 3.0 dB less than said gain maxima. Such a device permits a sweeping of a zone with several adjacent sub-sweeps from a machine overflying said zone.
REFERENCES:
patent: 5350911 (1994-09-01), Rafanelli et al.
patent: 5351060 (1994-09-01), Bayne
patent: 5373151 (1994-12-01), Eckel et al.
patent: 6295034 (2001-09-01), Brown et al.
patent: 6606066 (2003-08-01), Fawcett et al.
patent: 6707052 (2004-03-01), Wild et al.
patent: 2002/0008669 (2002-01-01), Muhlhauser et al.
patent: 2006/0290585 (2006-12-01), Welch
patent: 0 638 956 (1995-02-01), None
Raney et al., “Radarsat,” Proceeding of the IEEE, vol. 79, No. 6, pp. 839-849 (Jun. 1991).
Martins-Camelo L et al., “Reflector Antenna with Switchable Shaped Beams for a Space-Based Sar,” IEEE, XP-002302913, pp. 145-148, (1985).
Rotti et al, “SnowSat—A Ku-band SAR Mission for Climate Research and Hydrology,” IEEE, XP010705224, pp. 1901-1903, (2003).
International Search Report PCT/FR2005/00870; report dated Dec. 8, 2005.
Bredin Carine
Goutoule Jean-Marc
Astrium SAS
Bui Pho Pascal M
Le Que T.
Miller Matthias & Hull
LandOfFree
Detection device comprising a parabolic mirror and use of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detection device comprising a parabolic mirror and use of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection device comprising a parabolic mirror and use of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3986139