To meet the needs of high capacity system,new technologies are being developed,and one of the most recent is the system known as time division multiple access,satellite switched(TDMA/SS)which is suitable for multiple spot beam zones.

• 为了满足高容量系统的要求 ,近几年发展了许多新的技术 ,其中为了解决多个点波束区域的通信 ,被称为时分多址 /星上交换 (TDMA/SS)技术便应运而生。