Question

Heights of transmitting and receiving antennas from earth surface are h_(T) and h_(R) respectively. Write the relation for maximum line-of-sight (LOS) distance two antennas.

Answer 1

Explanation:

AC=

AB

2

−BC

2

∴ x=

(h+R)

2

−R

2

=

h

2

+2hR

As $$h<< R$$ ⟹ x=

2hR

.......(1)

Let the receiving and transmitting antennas are situated on earth as shown in figure (ii).

Maximum line of sight (LOS) distance between two antennas X=x

R

+x

T

Using equation (1), we have x

R

=

2h

R

R

and x

T

=

2h

T

R

⟹ X=

2h

R

R

+

2h

T

R

. hope this will help you.

thank you