Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Missile or spacecraft guidance
Reexamination Certificate
2006-05-30
2006-05-30
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Missile or spacecraft guidance
C342S080000, C342S097000, C342S099000, C342S101000, C342S115000, C342S116000, C342S149000, C342S192000, C342S196000
Reexamination Certificate
active
07053815
ABSTRACT:
A radar tracking system for an anti-aircraft, missile, including angle tracking, doppler tracking and range tracking feedback loops operating on sum and difference channels. Fast fourier transform digital filters are used to provide a frequency spectrum of the sum and difference I.F. channels and detection and confirmation algorithms are employed for selecting the F.F.T. target ‘bin’. Adjacent F.F.T. bins are used to simulate a bin centered on the target frequency, shifts of the latter with target/missile acceleration causing frequency errors which are detected by a discriminator and used to control the target I.F. Confirmation of target acquisition is achieved by successive summations of the target bin power the totals being accumulated and compared with upper and lower thresholds. Confirmation and rejection results from total levels outside the thresholds while further accumulation and comparison follow the intermediate condition. Multiple target discrimination is provided by comparison of two S/N ratios, one obtained from target bin power and average power, and the other obtained from coherent power in the target bin and overall power in the target bin.
REFERENCES:
patent: 3728723 (1973-04-01), Gellekink
patent: 3952304 (1976-04-01), Broniwitz et al.
patent: 4156875 (1979-05-01), Keane et al.
patent: 4179696 (1979-12-01), Quesinberry et al.
patent: 4271412 (1981-06-01), Glass et al.
patent: 4442431 (1984-04-01), Bleakney
patent: 5047781 (1991-09-01), Bleakney
patent: 5233351 (1993-08-01), Gregory et al.
patent: 6771205 (2004-08-01), Barton et al.
Joynson David William
MacBean Peter James
Stansfield Nigel
Alenia Marconi Systems Limited
Kirschstein et al.
Sotomayor John B.
LandOfFree
Radar tracking system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radar tracking system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar tracking system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3652447