Fresnel zone radius calculation

In summary, to calculate the Fresnel zone radius for a distance of 49 miles between two points with an antenna height of 15 meters, the result is 156.75 meters.
  • #1
drkossa
2
0
Fresnel zone radius calculation?

2u77uya.jpg


14mccr4.jpg


this is a bit hard for me to find out the calculation


30 miles between HQ and Intermediate radio station.
19 miles between Intermediate radio station and Harbour Master Building.

So, from HQ to Hardbour Master Building is 30miles + 19miles = 49miles

The Forest is 15 meters Height.

What is the appropriate antennae heights




Please Help me Out
 
Physics news on Phys.org
  • #2
The calculation to determine the Fresnel zone radius is as follows: Fresnel Zone Radius = (d√(h1*h2))/2 where d is the distance between the two points and h1 and h2 are the antenna heights of the two points. So, for this example, we would have: Fresnel Zone Radius = (49√(15*15))/2 = 156.75m
 

1. What is the Fresnel zone radius?

The Fresnel zone radius is a measurement used in wireless communication systems to determine the amount of clearance needed between a transmitting antenna and any obstacles in its path in order to maintain a clear signal.

2. How is the Fresnel zone radius calculated?

The Fresnel zone radius calculation takes into account the frequency of the signal, the distance between the transmitter and receiver, and the height of the antennas. It can be calculated using a mathematical formula or with the help of online calculators.

3. Why is the Fresnel zone radius important?

The Fresnel zone radius is important because it helps to ensure that there is minimal interference in the signal path. If there are any obstacles within the Fresnel zone, it can cause signal degradation or loss, leading to poor communication quality.

4. What factors can affect the Fresnel zone radius?

The main factors that can affect the Fresnel zone radius are the frequency of the signal, the distance between the transmitter and receiver, and the height of the antennas. Other factors such as weather conditions, terrain, and the presence of buildings or trees can also impact the Fresnel zone.

5. How can the Fresnel zone radius be optimized?

To optimize the Fresnel zone radius, it is important to choose appropriate antenna heights and frequencies, as well as to minimize any obstacles within the Fresnel zone. This can be achieved through careful planning and site surveys before setting up a wireless communication system.

Similar threads

Solve First Fresnel Zone Question & Understand Conclusion
    • Engineering and Comp Sci Homework Help
Replies
1
Views
4K
Actual height of Fresnel forbidden zone - distance between line and elipse
    • Other Physics Topics
Replies
1
Views
2K
How to calculate the time delay based on a function of antenna angle?
    • Electrical Engineering
Replies
3
Views
1K
Setting up a 20km radius paging transmission signal coverage
    • Electrical Engineering
Replies
26
Views
2K
B Calculations relating to a pneumatic launcher
    • Classical Physics
Replies
12
Views
2K
Determining the distance difference of towers of a bridge
    • Precalculus Mathematics Homework Help
Replies
4
Views
2K
Calculating Exoplanet Habitability using Stefan-Boltzmann Law | Habitable Zones
    • Astronomy and Astrophysics
Replies
15
Views
3K
What Makes ULX-1 in the Pinwheel Galaxy an Exceptional Black Hole?
    • Astronomy and Astrophysics
Replies
1
Views
2K
Calculating Pressure on Tank Walls
    • Mechanics
Replies
5
Views
6K
MHB Dylan's questions at Yahoo Answers regarding related rates
    • General Math
Replies
4
Views
5K

Hot Threads

Recent Insights

Back
Top