In figur water level of a wide lake transmits microw towards

Last updated: 6/18/2023

In figur water level of a wide lake transmits microw towards a receiver on the opposite shore a distance x above the water level The microwaves reflecting from the water interfere with the microwaves arriving directly from the transmitter Assuming that the lake width D is much greater than a and x and that a at what values of x is the signal at I the receiver maximum Solution Figure 6 9 The wave which gets reflected from the water surface suffers a 2 phase changes of rad or path difference of 2 The reflected wave appear to be coming from the image of the transmitter in the water level The situation is shown in below figure 6 10 SIT 2N 1 Figure 6 10 R The path difference between the waves receiving at R is Ar 2a sin 0 x Ax 2a The em is the mi the Sa Pa As lake width is much greater than the transmitter and receiver heights we can take 0 to be very small So we can use Ar 2a0 The effective path difference including the reflection from water surface will be given as