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IDR的概念最早于1978年提出,这是一种新的综合数字通信业务。国际通信卫星组织(INTELSAT)于1984年第59次董事会首次批准工作于A、B和C标准地球站IDR数字载波的性能要求。1986年又批准E_3、F_3和E_2、F_2标准站也可用IDR业务。提出IDR的目的是在传输56kb/s(对SGPC)和120mb/s(对TDMA)速率之间确定一种数字卫星通信方式。 IDR是英文intermediate data rate的缩写,译成中文为中速数据,其传输速率为64kb/s～44.736Mb/s_0~-IDR采用时分复用(TDM)、频分多址(FDMA)传输方式,本质上是TDM/PSK/FDMA。IDR基带为
The concept of IDR was first proposed in 1978, which is a new integrated digital communications business. International Telecommunications Satellite Organization (INTELSAT) 59th Board of Directors in 1984 for the first time approved the work on the A, B and C standard earth station IDR digital carrier performance requirements. In 1986, it approved E_3, F_3 and E_2, and F_2 standard stations can also use IDR services. The aim of IDR was to determine a digital satellite communication scheme between the transmission of 56 kb / s (for SGPC) and 120 mb / s (for TDMA). IDR is an abbreviation for intermediate data rate in English, and is translated into Chinese as medium speed data. Its transmission rate is 64kb / s ~ 44.736Mb / s_0 ~ -IDR adopts time division multiplexing (TDM) and frequency division multiple access (FDMA) Essentially TDM / PSK / FDMA. IDR baseband is