Dynamic simulation based on RPS-calculations for radio wave propagation in urban environment

Military operations in urban terrain will probably increase in the future. This demands soldiers by foot, since it is easier to move through and among buildings by foot. Soldiers will also have to carry their own radio equipments. Because the urban terrain is relatively unexplored, at least for military radio applications, it is important that the urban terrain is subject for further research. For this purpose, the Department of Communication System at FOI has acquired the Radiowave Propagation Simulator (RPS) software. RPS is used in this thesis work to generate a static scenario simulation, and then to incorporate the influence from the mobility of the transmitters and receivers to the result from the static scenario. This is done through spatial extrapolation of the channel impulse response to other positions. The channel impulse response is thereby modified, so that some of the paths in the complex impulse response will get new delays and new phases. The method, developed in this thesis work, for the spatial extrapolation has been implemented and evaluated in a small scenario. The results from the extrapolation method have also been compared with results calculated with RPS. The evaluation showed that the method gives consistent results. Another purpose with the thesis work have been to point out how results from radio channel research can be used more effectively to get research results with higher quality, both on link and net level.