Samuel Picton Drake
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View article: Single Channel Multiple Signal Classification using Pseudo-Doppler
Single Channel Multiple Signal Classification using Pseudo-Doppler Open
An algorithm is presented to determine the number and direction of multiple indistinguishable radio frequency emitters using a single channel circular antenna array. This algorithm combines pseudo-Doppler direction finding with the MUSIC a…
View article: Single Channel Multiple Signal Classification using Pseudo-Doppler
Single Channel Multiple Signal Classification using Pseudo-Doppler Open
An algorithm is presented to determine the number and direction of multiple indistinguishable radio frequency emitters using a single channel circular antenna array. This algorithm combines pseudo-Doppler direction finding with the MUSIC a…
View article: Single Channel Multiple Signal Classification Using Pseudo-Doppler
Single Channel Multiple Signal Classification Using Pseudo-Doppler Open
An algorithm is presented to determine the number and direction of multiple indistinguishable radio frequency emitters using a single channel circular antenna array. This algorithm combines pseudo-Doppler direction finding with the MUSIC a…
View article: Improved Doppler Positioning Techniques for Stand-Off Scenarios
Improved Doppler Positioning Techniques for Stand-Off Scenarios Open
In “stand-off” scenarios, an estimate of the bearing to an emitter can be easily calculated from measurements of the received frequency, position, and velocity of receivers. This technique is only effective if the measured frequencies can …
View article: Comment on “Relativistic phase velocity transformation” [Am. J. Phys. <b>57</b>(7), 628–630 (1989)]
Comment on “Relativistic phase velocity transformation” [Am. J. Phys. <b>57</b>(7), 628–630 (1989)] Open
A formula for the transformation of phase velocity between two inertial observers is given. This is a correction of the formula provided by R. A. Bachman in Am. J. Phys. 57(7), 628–630 (1989), in which the transformation of the phase veloc…
View article: Mapping Target Location from Doppler Data
Mapping Target Location from Doppler Data Open
In this paper, we present an algorithm for determining a curve on the earth's terrain on which a stationary emitter must lie according to a single Doppler shift measured on an unmanned aerial vehicle (UAV) or a low earth orbit satellite (L…