lecture22 - ECE2984 Lecture22: APPLICATIONS...

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ECE 2984 Lecture 22: PPLICATIONS TELLITE NAVIGATION APPLICATIONS – SATELLITE NAVIGATION Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation
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Exam 1 Results The exam was scored out of 80 points: MAXIMUM SCORE: 78 AVERAGE SCORE: 66 STANDARD DEVIATION: 9.33 “APPROXIMATE” GRADE SCALE: A: > 74 A : 72 74 B+: 70 72 B: 67 70 4 7 B : 64 67 C+: 60 64 C: 56 60 C : 52 56 Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation D: 48 52 F: < 48
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Last Lecture LAST LECTURE: Satellite Based Remote Sensing: asic rinciples Basic Principles Applications THIS LECTURE: tellite ased avigation Satellite Based Navigation: Basic Principles Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation Applications
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Satellite Based Navigation Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation
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Satellite Navigation A Global Navigation Satellite stem NSS) ses acecraft System (GNSS) uses spacecraft in orbit to provide navigational beacons. t e resent me ere re At the present time there are several GNSS networks in development: AVSTAR PS SA) NAVSTAR GPS (USA) GLONASS (Russia) Galileo (European Union) COMPASS (China) At the present time the NAVSTAR GPS system is the only one fully Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation operational and we therefore focus on it exclusively.
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The NAVSTAR Global ositioning System (GPS) Positioning System (GPS) The NAVSTAR Global Positioning System (GPS) i sa Global Navigation Satellite System operated by the US epartment f efense OD) Department of Defense (DOD). GPS spacecraft transmit specially coded signals that n e rocessed PS can be processed in a GPS receiver, enabling the receiver to compute position, velocity and time. At least 4 satellites are used to estimate 4 quantities: position nd me ) Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation in 3 D (X, Y, Z) and time (T)
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Uses of GPS Military Reconnaissance attlefield Navigation Battlefield Navigation Military Targeting Airplane and Boat Navigation ergency Services Emergency Services Tracking (people, objects, pets) Surveying and Cartography recision Farming Precision Farming Precise Timing keeping Migration Glaciology and Plate tectonics Archaeology Mobile Multimedia Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation Recreation
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How GPS Works Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation
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How GPS Works Space Segment 24+ Satellites The Current Ephemeris is Transmitted to Users Monitor Stations • Diego Garcia • Ascension Island • Kwajalein •Hawa i i • Colorado Springs PS Control End User Joseph Baker (ECE Dept) ECE 2984: Exploration of Space Lecture 22: Navigation GPS Control Colorado Springs
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Range Finding PS ft il l lki l k ” t i t
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This note was uploaded on 09/19/2011 for the course ENGE 1114 taught by Professor Twknott during the Fall '06 term at Virginia Tech.

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lecture22 - ECE2984 Lecture22: APPLICATIONS...

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