| 摘要: |
| 提出了一种新的中继卫星前向SMA（S频段多址）系统前向链路中多波束形成方法，即在地面
采用数字移相代替中继星星上模拟移相完成波束形成；指出了需要解决的关键技术问题和解
决方法，通过“星（用户星）-星（中继星）-地”无线联试，验证了地面数字移相的正确性
，对简化中继星上设备、实现前向链路同时多目标能力具有积极意义。 |
| 关键词: TDRSS 测控系统 S频段多址系统 多波束形成 数字移相 频
分复用 |
| DOI： |
|
| 基金项目: |
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| Multi-beam Forming for TDRSS SMA System Forward Link |
| SHI Wei-hua |
| (Southwest China Institute of Electronic Technology, Chengdu 610036,China) |
| Abstract: |
| A new multi-beam forming method using digital phase shifting on ground instead o
f analog phase shifting on satellite is proposed for forward link of TDRSS(Track
ing and Data Relay Satellite System) SMA(S-band Multiple Access) system. The key
challenges and solutions are presented. The effectiveness of digital phase shif
ting on the ground is proved through the“user aerocraft-TDRS-ground station”w
ireless experiment. The technique is meaningful for simplifying onboard e
quipment and achieving forward multiple objects simultaneous TT&C ability. |
| Key words: TDRSS TT&C;SMA system multi-beam forming digital phase shifting frequency divi
sion multiplexing |
