Computer Science
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983spie..389..121u&link_type=abstract
IN: Optical systems engineering III; Proceedings of the Conference, Los Angeles, CA, January 20, 21, 1983 (A84-16361 05-74). Bel
Computer Science
Blurring, Elliptical Orbits, Image Motion Compensation, Optical Tracking, Remote Sensors, Satellite Imagery, Error Analysis, Image Processing, Optical Measuring Instruments, Relativistic Effects, Smear
Scientific paper
The effect of elliptic orbit motion on the blurring in an optical sensor was evaluated. The magnitude of the uncompensated relative velocity, the smear velocity, can influence the selection of an orbit for the mission as well as the signal processing requirements. A model of the orbital kinematics and the optical projection effects for a surveillance spacecraft was developed in order to determine the smear velocity. The center of the sensor's field of view (CFOV) is assumed to be directed to track a point of interest on the earth's surface in order to reduce the relative motion. Two different modes of tracking the point are considered: two-axis tracking and three-axis tracking. The lateral variation of the smear velocity across the field of view (FOV) was analyzed. This effect, in conjunction with the frame time, contributes to the smearing or blurring of the image.
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