ionosphere and its effect in aerial propagation
TRANSCRIPT
WELCOME
IONOSPHERE AND ITS EFFECT IN AERIAL
PROPAGATIONBy Lt Arman Sharif
INTRODUCTION
AIM
To enhance your knowledge about Ionosphere and its effect in Aerial
Propagation.
SCOPE
1. Ionosphere and its characteristics.(Phase-1)
2. Phenomenon in Ionosphere controlling Aerial
Propagation.(Phase-2)
3. Advantages from Ionosphere in Aerial
Propagation.(Phase-3)
IONOSPHERE AND ITS CHARACTERISTICS
The Ionosphere is a region of the upper , from about 50 km to 450 km altitude, and includes the thermosphere and parts of the mesosphere and exosphere.
Definition
IONOSPHERE AND ITS CHARACTERISTICS
The Region of the earth's atmosphere between the stratosphere and the exosphere, consisting of several
ionized layers and extending from about 50 to 250 miles (80 to 400 km) above the surface of the earth.
Definition
IONOSPHERE AND ITS CHARACTERISTICS
IONOSPHERE AND ITS CHARACTERISTICS
a. Covers the portion of exosphere, mesosphere and
thermosphere.
b. At day time it can stretch from 60 km up to 1000 km.
c. Consists of D, E and F layer.
d. High concentration of electrons.
e. It controls radio signal effectively.
Characteristics
IONOSPHERE AND ITS CHARACTERISTICS
a. About Ionosphere.
b. Layers of Ionosphere.
c. Characteristics of Ionosphere.
Lessons Learnt
PHENOMENON IN IONOSPHERE
1. Sources of Ionization in Ionosphere
2. Process of Ionization in Ionosphere
3. Recombination in this Layer.
4. Different Layers’ Characteristics
PHENOMENON IN IONOSPHERE
Sources of Ionization
UV Rays from the Sun
Cosmic Rays from Deep Space, Nova
Meteor Trails
Particle Radiation from the Sun Specially From Solar Storm
PHENOMENON IN IONOSPHERE
Process of Ionization in Ionosphere
1.UV rays constantly hit to our atmosphere.
2.The energy radiated by UV rays or other
sources collide with the particles forming the
ionized particles.
3.Radio signal entering to this region, is getting
refracted.
PHENOMENON IN IONOSPHERE
Recombination in this Layer
1. Particles are constantly in motion.
2. In the process they also recombine to get stable.
3. But particles remaining in this layer will be mostly
ionized.
PHENOMENON IN IONOSPHERE
Different Layers’ Characteristics
1.D Layer.2.E Layer.3.F Layer.
IONOSPHERE AND ITS CHARACTERISTICS
Ionosphere’s Effect in Radio Communication
1. Total Internal Reflection of Radio Wave.
2. Formation of Skip Distance and Skip Zone.
3. Ionosphere’s effect to increase the range of radio signal.
4. Formation of Sporadic E and Sporadic F.
5. About VHF Band.
PHENOMENON IN IONOSPHERE
1.The behavior of Ionosphere
2. characteristics of different layers
3. Ionosphere’s effect on radio communication.
ADVANTAGES OF IONOSPHERE IN AERIAL PROPAGATION
1.D Layer Helps to Determine Lowest Usable Frequency(LUF).
2. F Layer Helps to Identify Maximum Usable Frequency(MUF).
3. Helps to change the Frequency at Day and Night.
4. Helps to increase the range of HF Communication.
ADVANTAGES OF IONOSPHERE IN AERIAL PROPAGATION
1. LUF.
2. MUF.
3. Increase of range for radio communication.
AT THE END
1. Ionosphere.
2. Its Characteristics.
3. Phenomenon in Ionosphere controlling Aerial
Propagation.
4. Advantages of Ionosphere in Aerial Propagation.
ANY DOUBT
Ionosphere is the most important layer for radio communication.
CONCLUSION
PHENOMENON IN IONOSPHERE
IONOSPHERE AND ITS CHARACTERISTICS
The Region of the earth's atmosphere between the stratosphere and the exosphere, consisting of several
ionized layers and extending from about 50 to 250 miles (80 to 400 km) above the surface of the earth.
Definition