Ionosphere and its effect in Aerial Propagation

WELCOME

IONOSPHERE AND ITS EFFECT IN AERIAL

PROPAGATIONBy Lt Arman Sharif

INTRODUCTION

To enhance your knowledge about Ionosphere and its effect in Aerial

Propagation.

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

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

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

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

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

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.

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.

Different Layers’ Characteristics

1.D Layer.2.E Layer.3.F Layer.

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.

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

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 effect in Aerial Propagation

Science

Radio Waves in the Ionosphere: Propagation, Generation ...160737/FULLTEXT01.pdf · radio waves in the ionosphere, and some work on the detection, identiﬁcation, and characterization

Analyses of different propagation models for the estimation …...1 1 Analyses of different propagation models for the estimation of 2 the topside ionosphere and plasmasp here with

The ionosphere and radio wave propagation · The ionosphere and radio wave propagation P. J. Erickson Atmospheric Sciences Group MIT Haystack Observatory RET Workshop Haystack Observatory

Gamma-quanta from SNRs V.N.Zirakashvili Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Russian Academy of Sciences (IZMIRAN),

The Ionosphere as a Plasma Begin. Questions Why is it called the ionosphere? How do we study the ionosphere? What can we measure in the ionosphere?

Examples of the Response of the Mars Ionosphere to Solar Flares Implications for Radio Propagation

Introduction to HF Radio Propagation - QSL.net to HF Radio.pdf · Introduction to HF Radio Propagation 1. The Ionosphere 1.1 The Regions of the Ionosphere In a region extending from

Introduction to HF Radio Propagation - Phil Storr's … to HF Radio Propagation 1. The Ionosphere 1.1 The Regions of the Ionosphere In a region extending from a height of about 50

Understanding HF propagation · 2. Ionosphere • The ionosphere is a layer in the atmosphere where gases can be photoionized as a result of external radiation • Photoionization

Supernova Remnants as Cosmic Rays Accelerators Vladimir S. Ptuskin Institute for Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian

A global ionosphere scintillation propagation model for

Yurii V. Dumin Institute of Ionosphere and Radio Wave Propagation, Russian Academy of Sciences,

Electromagnetic Wave Propagation in Ionospheric Plasmacdn.intechopen.com/pdfs/16407/InTech-Electromagnetic_wave_propagation... · Electromagnetic Wave Propagation ... The ionosphere

Model of the propagation of very low-frequency beams in ...v-fedun.staff.shef.ac.uk/VF/publications_pdf/Rapoport_Grimalsky_Fe… · tromagnetic (EM) beam propagation in the Earth–ionosphere

PROPAGATION - WC8VOAPROPAGATION Ionosphere and solar activity Propagation O - the study of the movement of radio waves through various mediums (air, ground, water, etc.) Some Fundamentals

Chapter 7 Propagation The Ionosphere The ionosphere is the region of the upper atmosphere where the Sun’s ultraviolet radiation can ionize oxygen molecules

lib.iszf.irk.rulib.iszf.irk.ru/The high-latitude ionosphere and... · The high-latitude ionosphere and its effects on radio propagation The physical properties of the ionized layer

Trans-Equatorial Propagation (TEP) · 2020. 4. 24. · TEP Mechanism As mentioned in the previous paragraph, the tell-tale signature in the ionosphere for trans-equatorial propagation

HIGH FREQUENCY (HF) RADIOWAVE PROPAGATION DT 1C · wave propagation in the earth's ionosphere. It is intended for people who are not fully acquainted with the physics of the problem

Geophysicae Annales Low frequency modulation of ...Key words. Magnetospheric physics (magnetosphere – ionosphere interactions) Ionosphere (ionosphere – magne-Correspondence to: