JPL Large Active Retrodirective Arrays for Space Applications -

These are the velocity components of the pilot signal incident on the ARA as seen from the ARA. The components of the retrodirected signal are, therefore, We may now apply the (Bl) transformation again to find [] and [] , the components of the signal received back at the pilot source from the ARA, but in doing so, note that the velocity of the pilot source relative to the spacecraft CS is -v. Therefore, Substituting now from (B2) and (B3) we get

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