A summary is given of Doppler's life and career. He was born 180 years ago on 29 Nov 1803 in Salzburg, Austria. He died on 17 Mar 1853 in Venice. The effect bearing his name was first announced in a presentation before the Royal Bohemian Society of the Sciences in Prague on 25 May 1842. Doppler considered his work a generalization of the aberration theorem as discovered by Bradley. With ...
The location of sources of waves propagating with unknown speed above (electromagnetic, infrasonic, acoustic-gravity wave) or below (seismic wave) the surface of the earth may be deduced from time-of-arrival measurements made at four synchronized stations. In order to determine how errors in arrival time relate to errors in source location and signal velocity, a computational procedure was developed. The latter is aimed at finding the optimum network configuration for determining ...
In a computer experiment, a corrugated mirrolike reflection surface was made to move horizontally above a plane containing a pair of points representing a bistatic ionospheric radar. The reflection surface was synthesized by the superposition of sinusoidal cylindrical waves that were allowed to move in different directions. A search routine was developed to find the rays that pass through the pair of points and satisfy specular reflection conditions at the ...
Reports by Author
