????:1??????????:?????????

2???????200??????

3?????????

4???????

5???????????

?????????????????????6??????????????????????30? ???6??????30??,????????????,??????,???????1.5??????????????,??????,??????

?????,30?????????15??43???,??

?,??,??????????820?,????????????????,???,?????????,?,???????1.5????,???,?????????????????????????????,????????????,??????????

?,????????3.8?,?????????590??????,????????????(LEO)?17???????????????????????????????????????,?????(SSO)?????14?????(??????????) ?????:??