Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

SEASAT Equator Crossing Program

Author(s): B. G. Young and D. L. Desaulniers
Corporate Author: Defence Research Establishment Ottawa
Corporate Report Number: DREO TN 80-19
Date of Publication: 1980-06
Pages: 32
AD Number: ADA099442
Original AD Number: ADA099442

Abstract:
A programmable pocket calculator is used to extrapolate the SEASAT orbit from the equator crossing to the position at which the synthetic aperture radar images a given target. The program predicts the coordinates of the satellite at image time, the Azimuth direction of the image at the target, and the time elapsed between equator crossing and imaging. Program predictions are compared with measured SEASAT data from the definitive attitude-orbit files.

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