Ppt on satellite orbits

Satellite Systems IT351: Mobile & Wireless Computing Objective: – To introduce satellite communications and provide details of the particulars of satellite.

atmospheric attenuation, and electrical noise from earth GEO MEO LEO Three different types of satellite orbits can be identified depending on diameter of the orbit: GEO (Geostationary Earth Orbit), 36000 km above earth surface LEO (Low Earth Orbit): 500 - 1500 km MEO (Medium Earth Orbit) or ICO (Intermediate Circular Orbit): 6000 - 20000 km Orbits earth km 35768 10000 1000 LEO (Globalstar, Irdium) inner and outer Van Allen belts/


Satellite Communication

are sufficient for continuous time coverage of the service area. All traffic must be periodically transferred from the “setting” satellite to the “rising” satellite (Satellite Handover) Satellite Orbits Source: Union of Concerned Scientists [www.ucsusa.org] Why Satellites remain in Orbits Advantages of Satellite Communication Can reach over large geographical area Flexible (if transparent transponders) Easy to install new circuits Circuit costs independent of distance Broadcast possibilities Temporary/


Chapter Fourteen Notes: Satellite Motion.  Circular Motion Principles for Satellites  A satellite is any object which is orbiting the earth, sun or.

velocity. For this reason, there is no acceleration in the tangential direction and the satellite remains in circular motion at a constant speed. A satellite orbiting the earth in elliptical motion will experience a component of force in the same /from kinetic energy into potential energy, the total amount remains the same - mechanical energy is conserved. As a satellite orbits earth, its total mechanical energy remains the same. Whether in circular or elliptical motion, there are no external forces capable/


Satellite Networking Lecture 6 Issues in Space Segment and Satellite Implementation

if done incorrectly, can lead to disastrous results for all parties. For all of these reasons, operators and users can participate in the solution to providing continuity of orbital service. Risks in Satellite Operation The following slides identify risks that affect the delivery of space segment service to users. Some basic approaches to the resolution of each of these risks are discussed/


David E. Pitts Earth Observations Satellite Sensors An Overview Earth Observations Satellite Sensors An Overview Overview of Earth Observations Satellites.

(Spot-2 retired July 30, 2009) Spot-5 launched May 4, 2002 http://eoedu.belspo.be/en/satellites/spot.htm Sun synchronous orbit repeat cycle - each 26 days Cross track point of 60 km swath gives 2.5 day coverage 3-/Resolution: 22m, 600 km swath –Launched Aug 17, 2011, built by British SSTL David E. Pitts Earth Observations Satellite Sensors An Overview Earth Observations Satellite Sensors An Overview Orbital Imaging Corp. OrbView - 1 launched April 3, 1995 OrbView - 2 launched Aug. 1, 1997 Panchromatic, 1/


Dr Mark Cresswell.  Anatomy of a satellite  Types of satellite orbit  The radiometer  Launch vehicles  Operational demands  Decommissioning and.

-south direction.  Problem of Polar Coverage with Geostationary Satellites: While most communications satellites are in Geosynchronous orbit, the footprints of GEO satellites do not cover the polar regions of Earth. So communications satellites in elliptical orbits cover the areas in the high northern and southern hemispheres that are not covered by GEO satellites.  Not all artificial satellites orbit the Earth. Research craft orbit the Sun. SOHO (SOlar and Heliospheric Observation/


1 Using NASA’s Giovanni Web Portal to Access and Visualize Satellite-Based Earth Science Data in the Classroom Dr. Steven A. Lloyd Chief Scientist NASA.

Earth’s Rotation Sun-Synchronous, Near-Polar, Low-Earth Orbit (LEO) Path of Satellite 7 NASA Earth-Observing Satellites Low Earth Orbit (LEO): Orbiting at an altitude of 600-1,000 km. 8 Path of Satellite NASA Earth-Observing Satellites Ascending Orbit: The satellite is moving South to North when that portion of the orbit track crosses the equator. Low Earth Orbit: Orbiting at an altitude of 600- 1,000 km. 9/


AQA GCSE Physics 3-1b Turning Forces Circular, Satellite & Planetary Motion GCSE Physics pages 222 to 233 April 10 th 2010.

Sequential Puzzle on Planet Size - by KT - Microsoft WORDPlanet Size Projectile & Satellite OrbitsProjectile & Satellite Orbits - NTNU Kepler MotionKepler Motion - NTNU Keplers 2nd LawKeplers 2nd Law - Fendt Two & Three Body Orbits Two & Three Body Orbits - 7stones Orbits Orbits - Gravitation program BBC KS3 Bitesize Revision: Gravitational ForcesGravitational Forces - includes planet naming applet Satellites A satellite is a lower mass body that orbits around a higher mass body. - The Moon is a natural/


Keplers Law Kepler’s First Law – the orbit of any planet is an ellipse with the sun at one focus.

of 1000 km? a. 1 hr 45 mins b. 2 hrs 45 mins c. 2 hrs 30 mins d. 3 hrs Questions 25. A satellite, orbiting in a circular orbit, a. Has constant velocity b. Has varying velocity c. Is not moving at all d. Both a and b Questions 26. What is a /b. 24 c. 48 d. 50 Questions 57. Aguila I has how many transponders? a. 36 b. 48 c. 24 d. 12 Questions 58. How many satellite orbital slots were requested by the Philippine Government from ITU? a. 2 b. 4 c. 6 d. 8 Questions 59. The most common device used as an LNA is/


Geometry of The Earth and Satellite Orbit Satellite Positioning.

charts l Changes in positions with time ädeformations and... navigation l The gravity field of the earth äsatellite orbits l Geodynamics Phenomena äcrustal dynamics, sea level l The relative positions and heights of points on the surface /charts l Changes in positions with time ädeformations and... navigation l The gravity field of the earth äsatellite orbits l Geodynamics Phenomena äcrustal dynamics, sea level CLASSICAL GEOMETRICAL GEODESY Equipotential Equipotential Solid Earth Geoid Vertical Definitions /


Satellite Communications Chapter 9. Heart of satellite communication: satellite based antenna in a stable orbit (satellite trajectory) above the earth.

center at earth’s center Elliptical with one foci at earth’s center Classification of Satellite Orbits Orbit around earth in different planes Equatorial orbit above earth’s equator Polar orbit passes over both poles Other orbits referred to as inclined orbits Classification of Satellite Orbits Altitude of satellites Geostationary orbit (GEO) Medium earth orbit (MEO) Low earth orbit (LEO) Geometry Terms Elevation angle - the angle from the horizontal to the point on/


NOAA’s Satellite and Information Service The Nation’s Civil Operational Environmental Satellite Agency FY 2006 Constituent Budget Brief March 3, 2005 FY.

with Northrop Grumann for NPOESS spacecraft, instruments, and ground systems –Continue activities to support NPP launch $11.0MLANDSAT –Provide for integration of LANDSAT sensor on first NPOESS satellite FY 2006 Polar Orbiting Satellites—$434.7M 39 Polar-orbiting satellites provide continuous global environmental observations in support of operation requirements for: –Weather Forecasting and Space Environment –Detection of significant environmental events (e.g., fires, oil spills/


By: Dr. N. Ioannides (Feb. 2010)CT0004N - L.05 - Satellite Communications - pp 1/28 Satellite Communications Saroj Regmi Lecture 05 CT0004N Principles.

. Ioannides (Feb. 2010)CT0004N - L.05 - Satellite Communications - pp 3/28 Today’s Lecture: 05 Satellite Communications Introduction to Satellites, Components of a Human-Made Satellite, Launching a Satellite, Orbital Altitudes, Satellites in Orbit, Satellite Systems, GSO, MEO and LEO Satellites, Satellite Payload. By: Dr. N. Ioannides (Feb. 2010)CT0004N - L.05 - Satellite Communications - pp 4/28 Satellite Communications A satellite is an object that goes around, or orbits, a larger object, such as a/


Wireless Communication Network Lab. Chapter 12 Satellite Systems 曾志成 國立宜蘭大學 電機工程學系 Chih-Cheng TsengEE of NIU1.

be stable, we need to equate the two forces. Thus, Chih-Cheng TsengEE of NIU8 Wireless Communication Network Lab. Inclination Inclination   Satellite orbit Perigee Plane of satellite orbit Equatorial plane The plane of the satellite orbit with respect to earth Apogee Chih-Cheng TsengEE of NIU9 Wireless Communication Network Lab. Footprint The area inside the circle is considered to be an isoflux area and this constant/


AQA GCSE Physics 3-1b Turning Forces Circular, Satellite & Planetary Motion GCSE Physics pages 222 to 233 April 10 th 2010.

Sequential Puzzle on Planet Size - by KT - Microsoft WORDPlanet Size Projectile & Satellite OrbitsProjectile & Satellite Orbits - NTNU Kepler MotionKepler Motion - NTNU Keplers 2nd LawKeplers 2nd Law - Fendt Two & Three Body Orbits Two & Three Body Orbits - 7stones Orbits Orbits - Gravitation program BBC KS3 Bitesize Revision: Gravitational ForcesGravitational Forces - includes planet naming applet Satellites A satellite is a lower mass body that orbits around a higher mass body. - The Moon is a natural/


David Nesvorny (Southwest Research Institute) David Nesvorny (Southwest Research Institute) Capture of Irregular Satellites during Planetary Encounters.

-km diameters 1-km to 340-km diameters Diversity of colors (neutral to reddish) Diversity of colors (neutral to reddish) Irregular satellites have large, eccentric and predominantly retrograde orbits Irregular satellites have large, eccentric and predominantly retrograde orbits Orbits of Irregular Satellites Retrograde Prograde Irregular Satellites 104 known objects: 54 at Jupiter, 35 at Saturn, 9 at Uranus, 6 at Neptune (excluding Triton) 104 known objects: 54/


Satellite Communication. 17.2Satellite Networks Orbits Three Categories of Satellites GEO Satellites MEO Satellites LEO Satellites.

cellular telephony but on a global scale. Note: Figure 17.21 Teledesic Teledesic has 288 satellites in 12 LEO orbits, each at an altitude of 1350 km. Note: Satellite Components Satellite Subsystems –Telemetry, Tracking, and Control –Electrical Power and Thermal Control –Attitude Control –Communications Subsystem Satellite Orbits Equatorial Inclined Polar Orbital Mechanics Without Force Gravity Effect of Gravity Here’s the Math… Gravity depends on the mass/


Satellite Orbit Determination with GENSOpage: 1 of 21 Satellite Orbit Determination with the Global Educational Network for Satellite Operations AMSAT-UK.

real observations Satellite Orbit Determination with GENSOpage: 16 of 21 Tracking Mode Orbit Determination (2) Satellite Orbit Determination with GENSOpage: 17 of 21 Tracking Mode Orbit Determination (3) Satellite Orbit Determination with GENSOpage: 18 of 21 Tracking Mode Orbit Determination: Results/of data is possible Test when GENSO gets operational Adapt to real-world behavior of GENSO Satellite Orbit Determination with GENSOpage: 20 of 21 Acknowledgements ESA For the organization and sponsoring of GENSO/


Satellite Communication Introductory Lecture

sufficient for continuous time coverage of the service area. All traffic must be periodically transferred from the “setting” satellite to the “rising” satellite (Satellite Handover) Source: Union of Concerned Scientists [www.ucsusa.org] Satellite Orbits Why Satellites remain in Orbits? Advantages of Satellite Communication Can reach over large geographical area Can reach over large geographical area Flexible (if transparent transponders) Flexible (if transparent transponders) Easy to install new/


ASEN 5050 SPACEFLIGHT DYNAMICS Mission Orbits, Constellation Design Prof. Jeffrey S. Parker University of Colorado – Boulder Lecture 35: Orbits 1.

630 km Sun-synchronous, 11:00 am ascending time, 97.8 deg inclination Lecture 35: Orbits 65 Sirius 3 satellites Highly elliptical, geosychronous orbits (“Tundra” orbits) Each satellite spends 16 hours over the continental US per orbit. XM Satellites: 2 geostationary satellites. Lecture 35: Orbits 66 TDRSS Tracking and Data Relay Satellite System A dozen GEO satellites – some equatorial and some just off of the equator. Navigation and communication, largely of/


SATELLITE ORBITS The monitoring capabilities of the sensor are, to a large extent, governed by the parameters of the satellite orbit. Different types of.

and the mean distance to the centre of the earth are interrelated (Kepler’s third law) Example: If a polar satellite orbits at 860km mean altitude, Example: If a polar satellite orbits at 860km mean altitude, its orbital period is 101 minutes its orbital period is 101 minutes Its ground speed is 23,700km/h = 6.5km/sec Its ground speed is 23,700km/h = 6/


COMPUTER NETWORKING 2 LECTURE 6: satellites technology.

uplink and downlink types of satellite orbits  Four different types of satellite orbits can be identified depending on the shape and diameter of the orbit:  GEO: geostationary orbit, ca. 36000 km above earth surface  LEO (Low Earth Orbit): ca. 500 - 1500 km  MEO (Medium Earth Orbit) or ICO (Intermediate Circular Orbit): ca. 6000 - 20000 km  HEO (Highly Elliptical Orbit) elliptical orbits Types of orbits… ] Geosynchronous-Earth-Orbit (GEO)  Orbit is sychroneous with the earths/


ETP_satellite_basics_02 1 The Basic Science and Mathematics of Satellites.

Source: http://apod.nasa.gov/apod/ap090406.html ETP_satellite_basics_02 6 Objectives The student will be able to: Describe orbital inclination Define satellite orbit orientation Describe and sketch satellite ground tracks Summarize orbital altitudes Describe Lagrange points and their usefulness in space telescopes. ETP_satellite_basics_02 7 Orbital Information - 1 Ө Source: Definitions ETP_satellite_basics_02 8 Type of OrbitCharacteristics Polarθ = 90° Equatorialθ = 0° Inclined0° < θ < 90° Geocentric – a/


Satellite Communications Communication System Dr. Muhammad Saleem Awan.

bad during rain and fog. Basics: How Satellites are used Service Types  Fixed Service Satellites (FSS) Example: Point to Point Communication  Broadcast Service Satellites (BSS) Example: Satellite Television/Radio Also called Direct Broadcast Service (DBS).  Mobile Service Satellites (MSS) Example: Satellite Phones Types of Satellites Satellite Orbits  GEO  LEO  MEO  Molniya Orbit  HAPs Frequency Bands Geostationary Earth Orbit (GEO) These satellites are in orbit 35,863 km above the earth’s surface/


FORMATION FLIGHT OF SATELLITES AROUND THE EARTH (CELESTIAL MECHANICS SEMINAR) PhD. Candidate: Jorge Alberto Soliz Torrico DOCTORAL PROGRAMME IN AEROSPACE.

FLIGHT - METHODS DOCTORAL PROGRAMME IN AEROSPACE SCIENCE AND TECHNOLOGY PAG. 12 It is possible to reduce more the separation distance between satellites error by doing another rotation to the daughter’s orbit. In this case, the semi-major axis of the daughter satellite orbit will be rotated an angle beta, as is illustrated in the following figure RECENT ADVANCES IN FORMATION FLIGHT - METHODS Elliptical/


Satellite Orbit Determination with the Global Educational Network for Satellite Operations Master Project Presentation Open University of the Netherlands.

satellite in the orbit in time - Four parameters for the methods in this research Satellite Orbit Determination with GENSO page: 5 of 21 Low-Earth Satellite Orbits (2) Example orbital parameter: Inclination Inclination 40° - 60° - 80° Satellite Orbit Determination with GENSO page: 6 of 21 Receiving Low-Earth Orbit Satellites Satellite Orbit/possible Test when GENSO gets operational Adapt to real-world behavior of GENSO Satellite Orbit Determination with GENSO page: 20 of 21 Acknowledgements ESA - For the /


1 Satellite Industry Overview U.S. Department of Commerce – Thursday, December 16 th 2004.

in terms of tracking and high speed switching Challenges of Geostationary (GEO) Orbit Transmission latency or delay of 250 millisecond to complete up/down link Satellite antennas must be of larger aperture size to concentrate power and to create / frequency re-use - Easier to operate to low-power/low-gain ground antennas Challenges of Low-Earth Orbit (LEO) Systems - Larger number of satellites (50 to 70 satellites). Thus higher launch costs to deploy, build, and operate. - Harder to deploy, track and operate/


NPOESS National Polar-orbiting Operational Environmental Satellite System Briefing to the APAN Earth Observation Working Group January 30, 2004.

Commerce, and NASA EUMETSAT/NOAA Initial Joint Polar Agreement - November 1998 Brought in International Community Two Polar-orbiting Systems DMSP (Defense Meteorological Satellite Program) Currently F-14 Launched December 1994 F-15 Launched December 1999 F-16 Launched December 2003 POES (Polar-orbiting Operational Environmental Satellite) First Launched April 1, 1960 Currently NOAA-15 Launched May 1998 NOAA-16 Launched Sep 2000 NOAA-17/


Mobile Communications Chapter 5: Satellite Systems

shifting of frequencies transparent transponder: only shift of frequencies regenerative transponder: additionally signal regeneration Prof. Dr.-Ing. Jochen Schiller, http://www.jochenschiller.de/ MC SS02 5.7 Inclination plane of satellite orbit satellite orbit perigee d inclination d equatorial plane Prof. Dr.-Ing. Jochen Schiller, http://www.jochenschiller.de/ MC SS02 5.8 Elevation e Elevation: angle e between center of/


Wireless WANs: Satellite Networks

miles HEO: var. LEO: typically between 500 and 1000 miles Low Earth Orbit (LEO) Medium Earth Orbit (MEO) Geosynchronous Orbit (GEO) Figure 16.15 Satellite orbit altitudes Geosynchronous Orbit (GEO) Satellite Systems Advantages: large area coverage, stay where they are at 35,786km (22,000miles) above the Earth satellite rotation is synchronous to earth three satellites can cover the whole globe low system complexity Disadvantages: long propagation delay (~125/


Mobile Communications Chapter 5: Satellite Systems

° 40° 50° elevation of the satellite 5.11 Orbits I Four different types of satellite orbits can be identified depending on the shape and diameter of the orbit: GEO: geostationary orbit, ca. 36000 km above earth surface LEO (Low Earth Orbit): ca. 500 - 1500 km MEO (Medium Earth Orbit) or ICO (Intermediate Circular Orbit): ca. 6000 - 20000 km HEO (Highly Elliptical Orbit) elliptical orbits 5.12 Orbits II Van-Allen-Belts: ionized/


Satellites R.Seenuvasanii mca.

at the Northernmost and Southernmost latitudes. GEOs and Weather The altitude is chosen so that it takes the satellite 24 hours to orbit the Earth once, which is also the rotation rate of the Earth. This produces the cloud animations /. One or more detectors that detect either visible, infrared, or microwave radiation. GEOs Satellites are positioned every 4-8 degrees. Aproximately 300 GEO satellites are in orbit. Pros and Cons of GEOs Advantages: Weather images can be displayed. Television broadcasts are/


Introduction A satellite is an object that orbits or revolves around another object. For example, the Moon is a satellite of Earth, and Earth is a satellite.

signals. It performs signal processing functions such as amplification, regeneration, frequency translation, and link switching, to make the signals suitable for retransmission. Sputnik1 was the first active satellite launched. GEOSTATIONARY SATELLITE Geostationary satellites r satellites that orbit in a circular pattern with an angular velocity equal to that of earth. they remain in a fixed position in respect to a given point on earth and/


April 10, 2008 “GPS DATA PROCESSING METHODS USING SW TOOLS AND THE GPS RECEIVER SW SIMULATOR FOR PRECISE RELATIVE POSITIONING OF FORMATION FLYING SATELLITES

DATA RECEIVERS SPS POSITION AND VELOCITY SOLUTION FORMATION SPS POSITION AND VELOCITY BASELINE SOLUTION RECEIVERS EXACT POSITION AND VELOCITY SOLUTIONS FORMATION EXACT POSITION AND VELOCITY BASELINE SOLUTION RECEIVERS ORBITAL PROPAGATION GPS SATELLITES ORBITAL PROPAGATION RECEIVERS SIGNAL DEGRADATIONS MEASUREMENTS RECEIVERS INNER LOOPS DEGRADATIONS MEASUREMENTS POST PROCESSING (RTK & MLAMBDA METHOD) FORMATION BASELINE ACCURACY RECEIVERS SIGNAL DEGRADATIONS ESTEEMS SW Simulator Logical Scheme GPS Receiver/


To Orbit (Continued) and Spacecraft Systems Engineering Scott Schoneman 13 November 03.

) Earth or Space Observation Earth or Space Observation International Space Station Support International Space Station Support Rendezvous and Servicing Rendezvous and Servicing Geosynchronous Orbit (GEO) Geosynchronous Orbit (GEO) Communication Satellites Communication Satellites Weather Satellites Weather Satellites Earth and Space Observation Earth and Space Observation Lunar and Deep Space Lunar and Deep Space Lunar Lunar Inner and Outer Planetary Inner and Outer Planetary Sun Observing Sun Observing/


More Satellite Orbits Introduction to Space Systems and Spacecraft Design Space Systems Design.

Systems and Spacecraft Design Space Systems Design 44 GEO Orbits Characteristics More Orbits Introduction to Space Systems and Spacecraft Design Space Systems Design 45 GEO Orbits Characteristics More Orbits Introduction to Space Systems and Spacecraft Design Space Systems Design 46 LEO Satellite Orbits More Orbits Introduction to Space Systems and Spacecraft Design Space Systems Design 47 Footprint More Orbits LEO Orbits Characteristics Introduction to Space Systems and Spacecraft Design/


High Precision Applications of Global Navigation Satellite Systems

(GPS, VLBI, SLR, DORIS). Combined daily station positions and ERPs, stacked for long-term estimates and RF maintenance satellite orbits & clocks (SP3), receiver clocks (CLK), tropo delays (TRO), and polar motion & LOD (ERP) + daily station/e.g., data analysis), alias period → GPS draconitic year 2) mismodeling effect in satellite orbits empirical solar radiation parameters intrinsically linked to orbital period but no precise mechanism proposed yet subsequent slides examine the impact of errors in a/


Satellite Orbits Satellite Meteorology/Climatology Professor Menglin Jin.

approximately 36,000 km above the EarthMust be orbiting approximately 36,000 km above the Earth Satellite can only “see” one hemisphereSatellite can only “see” one hemisphere Geosynchronous Meteorological Satellites WMO Member States Low Earth Orbit Concepts Equator South Pole Ground track Ascending node Inclination angle Descending node Orbit Perigee Apogee Orbit Sun-Synchronous Polar Orbit Satellit e Orbit Earth Revolution Satellite orbit precesses (retrograde) –360° in one year Maintains equatorial/


Mobile Communications Chapter 5: Satellite Systems

° 10° 20° 30° 40° 50° elevation of the satellite Orbits I Four different types of satellite orbits can be identified depending on the shape and diameter of the orbit: GEO: geostationary orbit, 36000 km above earth surface LEO (Low Earth Orbit): 500 - 1500 km MEO (Medium Earth Orbit) or ICO (Intermediate Circular Orbit): 6000 - 20000 km HEO (Highly Elliptical Orbit) elliptical orbits Orbits II Van-Allen-Belts: ionized particles 2000 - 6000 km/


Satellite Systems 1st session ends at p.30

stable, we need to equate the two forces. Thus, gR2 r  3 2f  2 Inclination The plane of the satellite orbit with respect to earth Satellite plane and earth plane Inclination The plane of the satellite orbit with respect to earth Footprint and Elevation Satellite can adjust it antenna to fix its footprint for a period of time. Footprint and Elevation The area inside the/


Satellite Communications-III Satellite Radio Navigation and GPS

data bits that describe the GPS satellite orbits, clock corrections, and other system parameters. Satellite Communications-III GPS Satellite Signals Back Satellite Communications-III GPS Satellite Data and its Format Satellite Communications-III GPS Satellite Data and its Format The GPS /clock and its relationship to GPS time (Clock Algorithm) Ephemeris data parameters describe SV orbits for short sections of the satellite orbits Normally, a receiver gathers new ephemeris data each hour, but can use old data/


Unit 2 GEOSTATIONARY ORBIT & SPACE SEGMENT

known as “Space Transportation System‟ (STS). Launching Orbits When the orbital altitude is greater than 1,200 km it becomes expensive to directly inject the satellite in its orbit. For this purpose, a satellite must be placed in to a transfer orbit between the initial lower orbit and destination orbit. The transfer orbit is commonly known as “Hohmann-Transfer Orbit” Launching Orbits The transfer orbit is selected to minimize the energy required/


Satellite Communications

, 1988. Tomasi, W., Advanced Electronic Communications Systems, Fifth Edition, Prentice-Hall, 2001. Lect 01 © 2012 Raymond P. Jefferis III General Concepts of Satellites: © 2012 Raymond P. Jefferis III Lect01 General Concepts of Satellites: They orbit around the earth Have various orbital paths (to be discussed) They carry their own source of power They can communicate with: Ground stations fixed on earth surface Moving platforms/


Low Earth (LEO) Medium Earth (OEO) Satellite Systems

with center at earth’s center Elliptical with one foci at earth’s center Orbit around earth in different planes Equatorial orbit above earth’s equator Polar orbit passes over both poles Other orbits referred to as inclined orbits Altitude of satellites Geostationary orbit (GEO) Medium earth orbit (MEO) Low earth orbit (LEO) Satellite Orbits Geometry Terms Elevation angle - the angle from the horizontal to the point on the center of/


Lecture 5: Sensors and Orbits Professor Menglin Jin San Jose State University.

Video Terra_orbit Satellite Orbits At what location is the satellite looking? When is the satellite looking at a given location? How often is the satellite looking at a given location? At what angle is the satellite viewing a given location? Video: EOS orbits Low Earth Orbit Concepts Equator South Pole Ground track Ascending node Inclination angle Descending node Orbit Perigee Apogee Orbit Sun-Synchronous Polar Orbit Satellit e Orbit Earth Revolution Satellite orbit precesses (retrograde/


1© Manhattan Press (H.K.) Ltd. 6.5 Satellite system of the earth Orbital motion of satellite Orbital motion of satellite Synchronous satellite and parking.

1© Manhattan Press (H.K.) Ltd. 6.5 Satellite system of the earth Orbital motion of satellite Orbital motion of satellite Synchronous satellite and parking orbit Synchronous satellite and parking orbit Energy of satellite Energy of satellite Weightlessness Weightlessness 2 © Manhattan Press (H.K.) Ltd. Orbital motion of satellite 6.5 Satellite system of the earth (SB p. 227) Moon – only natural satellite of earth Artificial satellites – man put them around earth Go to More to Know/


Satellite Orbits and Navigation 2

the desired longitude.  = sin-1(sin sin i) highest latitude = i ~ 6.6 earth radii AT737 Satellite Orbits and Navigation Geostationary Orbit AT737 Satellite Orbits and Navigation Geostationary Ground Track At this time GOES 6 was NOT being precisely maintained AT737 Satellite Orbits and Navigation Geostationary Coverage AT737 Satellite Orbits and Navigation Sunsynchronous Orbits The right ascension of ascending node changes: The inclination angle can be chosen such that W/


Satelitné technológie a služby Satellite technology and services 2013/14 Exercises 1 and 2 Ľudmila Maceková, KEMT – FEI – TU Košice Vysokoškolská4/119A.

Longitude of the Ascending Node The Earth-fixed longitude of the ascending node The ascending node (referenced in three of the above definitions) is the point in the satellites orbit where it crosses the Earths equatorial plane going from south to north. 18 [1,2] inklinácia i – uhol medzi rovinou obehu a rovinou rovníka Zeme uzol (node) – bod, /


AT737 Satellite Orbits and Navigation 1. AT737 Satellite Orbits and Navigation2 Newton’s Laws 1.Every body will continue in its state of rest or of uniform.

force and takes place in the line in which the force acts. 3.Action and reaction are equal and opposite. AT737 Satellite Orbits and Navigation3 Newtons Second Law is the familiar where F is force, m is mass, a is acceleration, v is velocity/= 6,378,137 m J 2 = 1.08263 x 10 -3 a, , and i are unperturbed Anomalistic mean motion constant AT737 Satellite Orbits and Navigation16 …and more equations Anomalistic period—the time from perigee to moving perigee The reciprocal of this is what you get in two-line/


Orbiter Communications.   Communications Windows   Microwave Band   Signal Characteristics   Orbiter Communications Systems   Orbiter S-band.

frequency and accessibility   Two types of data access are available SA – single access MA – multiple access Orbiter Communications TDRSS satellites SA – single access   Ku-band service on the TDRS is carried through two 4.9 m /called MA includes 30 helical antennas that are not steerable   Does not provide tracking or ranging information Orbiter Communications TDRSS satellite Orbiter Communications TDRSS Ground Station   The TDRSS ground element includes the dual-redundant ground station links and /


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