M-layer: NPS version

Abstract

The M-Layer program developed by NOSC has been substantially revised into a Naval Postgraduate School (NPS) version. The mode locating algorithm was re-written to take advantage of I d an alyticity of the mode function. The exponential complex number representation was adopted to simplify multiplication and to improve accuracy when adding two complex numbers which nearly cancel each other. A consistency condition was formulated to assure accurate and efficient evaluation of the height-gain function. As a result, this NPS version executes faster with greater stability.