A Microwave Propagation Prediction Tool, MPT, and its performancein practice

摘要

A Microwave Propagation Prediction Tool, MPT, has been developednin support of planning microwave video distribution systems, (MVDS) andnamplitude modulated links (AML). Contour data from either pre-digitisednor hand-digitised maps is transformed to height estimations on a regularngrid. The transformation method is described. Propagation predictionsnare based on an inverse square law with allowances for earth curvaturenand terrain diffraction effects. Land usage is allowed for by increasingnthe apparent ground height in wooded and urban areas. Signal strengthncontour plots and 3D plots are used to present results. Colourednbackground to contour plots indicates land relief. Road positions andnland usage are included as these enable a viewer to orient himself. Thensuite is written in C under UNIX and run on a 68030 computernsystem