APPENDIX B Path Loss over a Reflecting Surface
B.1 Path Loss over a Reflecting Surface
When the two antennas (transmitting and receiving) are on the earth, then there are multiple paths from the transmitter to the receiver. The effect of the multiple paths is the change in the path loss between two points. The simplest case is when the antenna heights, hb and hm, are small compared with their separation, d, and the reflecting earth surface is assumed to be flat. The received signal is then represented by a scattered field, Es, that is approximated by a combination of a direct wave and reflected wave (see Figure B.1).
Figure B.1 A model for ...
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