Sun'iy yo'ldoshli global navigatsiya tizimlari

sun'iy yo'ldoshli global navigatsiya tizimlari Reja: Kirish Pozitsiyalash tizimi tarixi GPS tizimi Boshqa tizimlar: GloNASS, Galileo Amalda tadbiq etilish sohalari A-GPS Xulosa CSSTEAP - 2012 2 What is Navigation Where am I ? What is the time now ? How many variables do I need? 4 variables Time (1) Position(3) CSSTEAP - 2012 3 Navigatsiya turlari Taxminiy hisob va xotira asosida (ko'r-ko'rona) Boshqaruv ostida (gid yordamida) Yer sirtidagi radio-pozitsiyalash sun'iy yo'ldoshlar yordamida. Stone Age to Satellite Age Determination of position has evolved through Ages Stone Age: Use of stones, trees and mountains as points of reference. Star Age: Use of celestial bodies such as Sun, Moon and stars as points of reference Radio Age: Use of Radio Signals for positioning Satellite Age: Use of Satellites for navigation CSSTEAP - 2012 5 Bir o'lchamli fazo - to'g'ri chiziq Ikki tayanch nuqtaga nisbatan pozitsiyani aniqlash Tekislikda ikki tayanch nuqta orqali olingan pozitsiya yagona emas - ikkita Satellite navigation with Ranging CSSTEAP - 2012 11 Navigation Coordinates Latitude Longitude Altitude CSSTEAP - 2012 12 X Y Z What else from known positions Velocity (Magnitude Direction) Time-To-Go(TTG) to destination The directions to destination The estimate of the time to arrive at destination CSSTEAP - 2012 13 Satellite Age Overcoming limitations of radio navigation Improved radio transmitters Wide coverage Accuracy in position depends on accuracy in computing satellite position 24hr all weather 3D positioning. CSSTEAP - 2012 14 GNSS - global navigatsiya sun'iy yo'ldosh tizimi GPS - Global Navigation System GNSS - Global Navigation Satellite System GloNASS - Globalnaya navigatsionnaya sputnikovaya sistema Galileo - YevropaCompass - Beidou (Xitoy) QZSS - Yaponiya Launch of Sputnik In 1957, the Soviets successfully launched Sputnik into space. It was the size of a basketball and weighed about 180 pounds. The Soviets' success embarrassed the United States who thought they were the world's most advanced industrial nation. As a result of their humiliation, the country took an active role into researching military precision. The Department of Defenses primary purposes in developing a Global Position System was to use it in precision weapon delivery CSSTEAP - 2012 16 Spotting the Sputnik Doppler effect Studying the Doppler Shift of the Sputnik showed a variance of the Sputnik signal in comparison of its position. As Sputnik approached, the signal frequency was higher than the transmitted frequency. The frequency decreased as Sputnik moved farther away, although the rate of decrease slowed with ...