Stimulated Brillouin scattering can cause asymmetries of ± 25% and ± 1% in the double humped spectra of incoherent backscatter measured at Jicamarca and at Arecibo, respectively. Errors of 10‐15 m/sec in the measured velocity could have been caused by ignoring the effects of these asymmetries at Arecibo but the typical errors were probably much smaller.
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Jules A. Fejer (1977) studied this question.
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