Method and device for determining the distance between an airborne receiver and a stationary ground transmitter
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United States of America Patent
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Aug 16, 2022
Grant Date -
Oct 4, 2018
app pub date -
Sep 27, 2016
filing date -
Oct 2, 2015
priority date (Note) -
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Abstract
A method and device for determining the distance between an airborne receiver and a stationary ground transmitter are disclosed. A digital terrain model is implemented to determine a range of distance values containing the transmitter. A receiver distance is found and, with the range of values, a plurality of theoretical distances is calculated, to each of which a corresponding azimuth angle and elevation angle are associated. The thus calculated azimuth and elevation angles are compared to the measured azimuth and elevation angles of the line of sight under which the receiver observes the transmitter.
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