Television – Special applications – Observation of or from a specific location
Patent
1992-11-25
1995-03-07
Britton, Howard W.
Television
Special applications
Observation of or from a specific location
348166, 348175, H04N 718
Patent
active
053962826
ABSTRACT:
An image mapping radiometer mounted on a craft flying an orbit above an object zone. The radiometer includes main optics having in the visible field thereof a unit object zone defined by the swath width over the object zone and a distance in the direction of orbit, and a plurality of linear photoelectic detectors each being assigned to one of a plurality of observation spectral bands and located in the focal plane of the main optics, thereby sequentially imaging the unit object zone. A correcting section has correction optics for projecting a correction pattern onto the photoelectric detectors so as to correct the band-to-band registration, i.e., the positional deviation between the elements of the detectors. A movable mirror is provided for selecting either of the main optics and correction optics. When the correction pattern is projected, a lattice pattern having a pitch different from the element pitch is generated on the light-sensitive surfaces of the detectors. The correction is effected by calculating the output signal levels of the detectors associated with the projected image on the basis of a vernier principle.
REFERENCES:
patent: 5270528 (1993-12-01), Ogikubo
Patent Abstracts of Japan, vol. 11, No. 152, 16 May 1987 61-288684 Test Chart for Measuring Registration of Solid State Image-Pickup Element.
Patent Abstracts of Japan, vol. 11, No. 152, 16 May 1987.
Y. Ishizawa et al., "The Development of Multispectral . . . Radiometer for MOS-1", Proceedings of the 14th Int'l Symp on Space Technology and Science, Tokyo, 1984, pp. 1313-1319.
J. Midan, "The Spot-HRV Instrument: An Overview of Design and Performance", 34th Congress of the International Astronautical Federation, Budapest, Hungary, Oct. 10-15, 1983, pp. 1-9.
Britton Howard W.
NEC Corporation
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