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Introduction to Satellite Introduction to Satellite TechnologyTechnology
1212thth Grade Science Class Grade Science Class
Cindy GarisCindy Garis
Introduction to Satellite TechnologyIntroduction to Satellite Technology
The objective of this lesson is to gain a better The objective of this lesson is to gain a better understanding of what a satellite is and how understanding of what a satellite is and how it works.it works.
NavigationNavigation
Click to go backwardsClick to go backwards
Click to return to the Main MenuClick to return to the Main Menu
Click to go forwardClick to go forward
Main MenuMain Menu
Section:Section:
(1)(1) Define Satellite and OrbitsDefine Satellite and Orbits
(2)(2) First Satellite and number of Satellites First Satellite and number of Satellites
(3)(3) How we communicate with a Satellite How we communicate with a Satellite
(4)(4) Satellite applications Satellite applications
Section 1: Define Satellite and Section 1: Define Satellite and OrbitsOrbits
A satellite is an object in orbit around a A satellite is an object in orbit around a celestial body. celestial body.
Orbit – the path of a satellite around a Orbit – the path of a satellite around a body (e.g. the earth) which is stable body (e.g. the earth) which is stable under the influence of gravity. under the influence of gravity.
Satellite is falling towards earth. It never Satellite is falling towards earth. It never crashes – it orbitscrashes – it orbits
Section 1: Define Satellite and Section 1: Define Satellite and OrbitsOrbits
ORBITAL LEVELS
– LEOS: LOW EARTH ORBIT (100-300mis.MILES)
– MEOS: MEDIUM EARTH ORBIT (6,000 – 10,000 MILES)
– GEOS: GEOSTATIONARY EARTH ORBIT (22,223 MILES
TYPES OF ORBITS:
– ELLIPTICAL (APOGEE AND PERIGEE)
– CIRCULAR– POLAR– GEOSTATIONARY
Section 2: First Satellite and number Section 2: First Satellite and number of satellitesof satellites
Sputnik 1 was the Sputnik 1 was the first artificial satellite first artificial satellite launched October 4, launched October 4, 1957.1957.
There have been There have been 4000 satellites 4000 satellites launched in history. launched in history. There are 2200 There are 2200 currently in orbit.currently in orbit.
History of Sputnik1History of Sputnik1
Number of man-made Number of man-made satellites in orbitsatellites in orbit
Section 2: First Satellite and number Section 2: First Satellite and number of satellitesof satellites
The largest satellite orbiting the earth is The largest satellite orbiting the earth is the moon.the moon.
Section 3: How we communicate Section 3: How we communicate with a Satellitewith a Satellite
A transponder receives transmissions A transponder receives transmissions from earth (uplink), changes signal from earth (uplink), changes signal frequency, amplifies the signal and frequency, amplifies the signal and transmits the signal to earth (downlink).transmits the signal to earth (downlink).
Section 3: How we communicate Section 3: How we communicate with a Satellitewith a Satellite
Section 3: How we communicate Section 3: How we communicate with a Satellitewith a Satellite
Uplink
Downlink
Section 4: Satellite applicationsSection 4: Satellite applications
Satellites are used for the following applications:
– TELECOMMUNICATIONS– BROADCASTING– NAVIGATION– WEATHER– GPS– MILITARY
Multiple choice Question 1 of 3Multiple choice Question 1 of 3
1)1) What is the largest satellite?What is the largest satellite?
a)a) Sputnik 1 Sputnik 1
b)b) The moon The moon
c)c) GPS system GPS system
Question 1Question 1
a)a) Sorry, wrong answer.Sorry, wrong answer.
Sputnik 1 was the first man-made Sputnik 1 was the first man-made satellite launched. satellite launched.
Go back to the main menu and review Go back to the main menu and review Section 1 to try again.Section 1 to try again.
Question 1Question 1
b)b) Correct!Correct! The moon is the largest satellite. The moon is the largest satellite.
Click the right arrow to proceed to Click the right arrow to proceed to question 2.question 2.
Multiple choice Question 2 of 3Multiple choice Question 2 of 3
2)2) Currently, how many satellites are there Currently, how many satellites are there in orbit?in orbit?
a)a) 4000 4000
b)b) 3000 3000
c)c) 2200 2200
Question 1Question 1
a)a) Sorry, wrong answer.Sorry, wrong answer.
GPS is an application of a man-made GPS is an application of a man-made satellite. satellite.
Go back to the main menu to review Go back to the main menu to review Section 1 and try again.Section 1 and try again.
Question 2Question 2
a)a) Wrong answer.Wrong answer.
There have been 4000 satellites There have been 4000 satellites launched in history.launched in history.
Go back to the main menu and review Go back to the main menu and review Section 2 to try again.Section 2 to try again.
Question 2Question 2
b)b) Wrong answer.Wrong answer.
3000 was not mentioned anywhere.3000 was not mentioned anywhere.
Go back to the main menu and review Go back to the main menu and review Section 2 to try again.Section 2 to try again.
Question 2Question 2
c)c) Correct!Correct!
There have been 4000 satellites There have been 4000 satellites launched history.launched history.
Click the right arrow to proceed to Click the right arrow to proceed to question 3.question 3.
Multiple choice Question 3 of 3Multiple choice Question 3 of 3
3)3) When A transponder receives When A transponder receives transmissions from earth this is typically transmissions from earth this is typically known as an:known as an:
a)a) Downlink Downlink
b)b) Amplify Amplify
c)c) Uplink Uplink
Question 3Question 3
a)a) Wrong answer.Wrong answer.
A transponder receives transmissions from A transponder receives transmissions from earth (uplink), changes signal frequency, earth (uplink), changes signal frequency, amplifies the signal and transmits the signal to amplifies the signal and transmits the signal to earth (downlink).earth (downlink).
Go back to the main menu to review Section 3 Go back to the main menu to review Section 3 and try again.and try again.
Question 3Question 3
b)b) Wrong AnswerWrong Answer
A transponder receives transmissions A transponder receives transmissions from earth (uplink), changes signal from earth (uplink), changes signal frequency, amplifies the signal and frequency, amplifies the signal and transmits the signal to earth (downlink).transmits the signal to earth (downlink).
Go back to the main menu to review Go back to the main menu to review Section1 and try again.Section1 and try again.
Question 3Question 3
c)c) Correct!Correct!
A transponder receives transmissions A transponder receives transmissions from earth (uplink), changes signal from earth (uplink), changes signal frequency, amplifies the signal and frequency, amplifies the signal and transmits the signal to earth (downlink).transmits the signal to earth (downlink).
Proceed to next slide.Proceed to next slide.
The EndThe End