ATMOSPHERE /FREQUENCIES
Keywords: astro

Next: CATALOG Up: ATMOSPHERE Previous: ATMOSPHERE FORMAT Contents

###
ATMOSPHERE /FREQUENCIES

            ATMOSPHERE /FREQUENCIES SignalVar [IntermediateFrequency]

        Vectorized version of the ATMOSPHERE command.

        In  this  case, the input parameters are identical to the non-vectorized
        form (in particular, they are still scalar) except FREQ_SIG and FREQ_IMA
        which  are  ignored. The list of signal frequencies is read instead from
        the first variable passed to the option. It can be scalar or vector.

        If an intermediate frequency is also provided, a list of image  frequen-
        cies  is  derived  from the signal frequencies, symetric with respect to
        the IF. If the IF is absent, image frequencies are defined identical  to
        the  signal  frequencies, but still used in the ATM computation (in par-
        ticular this gives a decent continuum estimation if  GAIN_IMAGE  is  non
        zero). Set GAIN_IMAGE to zero to remove any image contribution.

        The  atmospheric  excess optical path length is NOT computed by this op-
        tion. Frequencies are all expected in GHz.

        In return, the command stores vectorized products in the following user-
        defined variables:
          ATM%TSYS
          ATM%TAU_H2O
          ATM%TAU_O2
          ATM%TAU_TOT
          ATM%EMIS_SIG
          ATM%EMIS_IMA
          ATM%PATH_SIG
          ATM%PATH_IMA
          ATM%ATM_SIG
          ATM%ATM_IMA
          ATM%TANT
          ATM%IER         ! Error status for each frequency
        Their dimensions match the input frequency lists.