Nghiên ứu đặc tính kênh truyền cho tuyến vệ tinh quan sát trái đất

B GIÁO DO I HC BÁCH KHOA HÀ NI -    LU   -  Tai ngay!!! Ban co the xoa dong chu nay!!! 17057204843671000000 B GIÁO DO I HC BÁCH KHOA HÀ NI -     LU NG DN KHOA HC :   -   Trang  .3    .6 -       .1   -          19  2.1.1 ng ca tng khí quyn .19               .5 -    56  .5  59  61 L         T vit tt Tên  Ting Vit LEO Low Earth Orbit  National Aeronautics and Space  Administration  Round Trip Time  Equivalent Isotropic Radiated  Power  Free Space Loss  NASA RTT EIRP FSL North American Aerospace Defense NORAD n nh m Command TLE Two Line Element  AFC Automatic Frequency Controller     Mt s v tinh thông tin liên lc (Internet)  v tinh qu o thp[1]  ng b mt tri (www.spagyuga.com)  S suy gim khí khí quyn [3]  Tng s suy gim mây theo hàm ca tn s i vi góc ng n 30 ) [3] 22 Tng suy gia tn s g  i v 30GHz hàm ca góc ngng [3] 25  nh vi góc ngng thp[3] T s trc AR [4] 29  Mơ hình hình hc gia v tinh trm mt   thông s qu o Kepler (Internet)                                1         g              -      -    -                  -            -  -   -  -  1.1  Ngày 4/10/1957 tinh Sput t u tiên, m mt k nguyên mi lch s chinh ph   ca lo i V tinh nng 83 kg, trông git qu bóng bng kim loi có anten ri Sputnik ch c tín hi tn ti qu o thp 92 ngày B lc hút c     cháy bu khí quyi ta có th phóng v tinh nng lên qu     tinh có th ho ng 20    cho Ngày 1/2/1958c t va cu, M phóng thàn u tiên ca M mang lên Explorer-1 nng 13,97 kg riêng phn thit b nn m Geiger- phát hin  ch ca pin, Explorer-1 ch ho       qu a Explorer-c nhiu s liu khoa hc có giá nhà khoa h thit k thit b khoa hc lt v tinh Explorer-   u dài h  tinh loc phóng Ngày 1/4/1960: V tinh c   u   c công khuôn kh mu dài hn c tên TIROS (Television Infrared Observation Satellite) Trên v tinh có camera truyn hình: m phân gii thp m phân gii cao nhm c nh ca khí quyn TIROS ch ho v tinh mt cơng c có th ng quy mơ tồn cu Seri c phóng liên ti-9 v  qu ng b Mt tr