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

2?????

3???????

4???2021??

5????????

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

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

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

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