METHOD FOR PREDICTING RADIO-WAVE PROPAGATION IN URBAN ENVIRONMENT

摘要

predicting characteristics of radio- wave propagation in urban canyon model including polarization phenomenon. SUBSTANCE: method involves following steps: numbering set of image antennas corresponding to signal reflections between transmitting and receiving antennas in urban canyon; determining paths corresponding to respective image antennas including computation of respective first signal reflection points on paths corresponding to image antennas; computing respective vectors of electric field due to reflection of paths corresponding to image antennas; finding total power of signal received by receiving antennas through vectors of electric field due to reflection of path signal and unit polarization vector of receiving antenna. Precise effects of decay can be obtained by assuming sufficiently great number of paths. Received-signal power distribution can be obtained for varying polarization of receiving antenna. EFFECT: enhanced precision of prediction of radio-wave propagation characteristics. 10 cl, 11 dwg