Equation Icon  ˆdW (ω )eiωτW ± ˆdS (ω)eiωτS ˆaN,E (ω) = -----------√-------------, 2 ˆbN (ω) ± ˆbE (ω) iωτ ˆcW,S(ω) = ------√--------e W,S (329 ) 2